Logo Neptronic
Home Humidifiers 50HZ SKD

SKD - DIRECT STEAM INJECTION HUMIDIFIER

Multi-Steamtm Distribution SKD - direct steam
  • Custom designed to meet your requirements
  • Unique Electronic Steam Controller (SKDESC)
  • Available patent-pending HD technology
  • Available patent-pending Pressurized Condensate Return (PCR) System
Jacketed Tube Distribution SKD - direct steam
  • Custom designed to meet your requirements
  • Unique Electronic Steam Controller (SKDESC)
  • Multiple configurations and capacities available
  • Available patent-pending Pressurized Condensate Return (PCR) System
SKDESC Controller SKD - direct steam
  • Pre-configured for each humidifier
  • Centralized wiring of sensors, valves and humidity controls
  • Controls sequences of operation for optimal efficiency
  • BACnet or Modbus compatible (optional)
Pressurized Condensate Return System PCR - Pressurized Condensate Return
  • No Drain
  • No Maintenance
  • Reuse Condensate
  • Energy Efficient
HD Technology SKD - direct steam
  • Wasted energy reduced by up to 85%
  • Investment payback with energy savings in appx. 15 months
  • Prevents condensate ejection
  • 100% stainless steel construction (reduces maintenance)

  • Multi-Steamtm

    Vertical Steam
    Distributors

  • Jacketed

    Horizontal Steam
    Distributors

  • HD

    High Efficiency Insulated
    Steam Distributor

  • PCR

    Pressurized Condensate
    Return System

  • SKDESC

    Electronic Steam
    Controller
Tech Time
Multi-Steamtm - Vertical Steam Distributors
  • Multi-Steamtm HD
  • Multi-Steamtm SD
  • High-Efficiency Insulated
    Steam Distributor
  • Standard
    Steam Distributor

Overview

  • Low Pressure Steam
  • Temperature Sensor
  • F&T Steam Trap
  • Isolating Valve
  • Steam Distribution System
  • Patent Pending Re-Evaporator
  • Steam Separator
  • Steam Control Valve
  • Channels and Header
  • Steam Ejector Eyelets
  • Condensate Return
  • SKDESC Controller
Clear Selection
SKD multi-steam HDR overview
SKD multi-steam HDR overview
R1 R1 R2 R2 R3 R3 R4 R4 R5 R6 M1 M1 M1 M2 M2 M3 M3 L1 L1 L2 L2 L3 L4 L4 L5 L5
SKD | Multi-Steam Distribution
Multi-Steamtm HDR
LEARN MORE
Click on image or bullets for more product info.
Uses low pressure steam from an in-house boiler through a strainer to remove any foreign material.
Monitors steam temperature and detects abnormal condensate level to ensure safe and efficient operation.
Float and thermostatic steam trap comes with universal four port design. Eliminates any remaining condensate from the steam line.
SKDESC controller opens electronic isolating valve when line is condensate free to supply steam to the re-evaporator’s heat exchanger.
  • Custom designed to fit your application.
  • Multiple vertical dispersion channels mounted on a single horizontal header.
  • Steam escapes through multiple eyelets and mixes with the airflow to maintain the desired humidity level.
  • Refer to patent pending HD Technology.
  • Integrated patent-pending re-evaporator (provides drain-free operation)
  • Re-boils condensate generated within the dispersion channels through an internal heat exchanger.
  • Custom sizing as per the system steam pressure to eliminate all the condensate produced.
Supplies condensate-free steam to the steam control valve, while discharging condensate to the steam trap.
Electronic steam control valve provides full modulation of the low pressure steam flow to the steam distributor for a better control of the humidity level.
  • Double wall 304 stainless steel with encapsulated Armacell UT/SolaflexTM foam insulation
  • Internal design ensures optimum efficiency (during operation, channels are cool to touch)
  • Refer to patent pending HD Technology
  • 304 stainless steel rated at 450°F (232°C).
  • Internal slope returns condensate to channel.
  • Prevents condensate ejection.
  • Refer to patent pending HD Technology.
Any remaining condensate flows to the condensate return line back to the boiler. No drain is necessary.
  • Pre-configured for each humidifier
  • Centralized wiring of sensors, valves and humidity controls
  • Controls sequences of operation for optimal efficiency
  • BACnet or Modbus compatible (optional)
  • Configuration and diagnostics menu
* The Multi-Steamtm HDR model is not available in the United States.

Features

  • Custom designed with Humidisoft to meet your specific steam capacity and non-wetting distance requirements.
  • Includes HD technology – a high efficiency insulated distributor.
    • Wasted energy reduced by up to 85%
    • Investment payback with energy savings in appx. 15 months
    • Prevents condensate ejection
    • Patent-pending technology
  • Includes patent-pending re-evaporator
    • Re-boils condensate generated within the dispersion channels through an internal heat exchanger.
    • Provides Drain-free operation (eliminates water and energy waste).
  • Includes SKDESC electronic steam controller.
    • Pre-configured for each humidifier
    • Centralized wiring of sensors, valves and humidity controls
    • Controls sequences of operation for optimal efficiency
    • BACnet or Modbus networked communication (optional)
    • Configuration and diagnostics menu
  • Most energy efficient steam injection system.
  • Medium to high capacities: 2 - 750 kg/h. Higher capacities also available.
  • Short non-wetting distance.
  • 100% stainless steel construction (reduces maintenance).

Networked Communication

  • BACnet® (optional)
    • MS/TP @ 9600, 19200, 38400, or 76800 bps
    • Set MAC address via controller menu
    • Manual or automatic device instance configuration
    • Automatic Baud Rate Detection
    • Over 65 BACnet Objects available for status, operation and configuration
  • Modbus® (optional)
    • 9600, 19200, 38400, or 57600 bps
    • Set MAC address via controller menu
    • Automatic Baud Rate Detection
    • Configurable parity and stop bits
    • Over 65 parameters available for status, operation and configuration

Operation

This configuration consists of multiple vertical dispersion channels mounted on a single horizontal header.

  • Low pressure steam from an in-house boiler enters the SKD steam supply line.
  • Any condensate flows through an F&T steam trap and returns to the boiler.
  • Using the temperature sensor signal, the controller determines if the steam is hot enough and that the steam supply is free of condensate.
  • Upon a demand for humidity, the SKDESC controller slowly opens the isolating steam valve feeding steam to the distributor’s heat exchanger on the horizontal header.
  • The steam flows through a steam separator to separate steam and condensate. Any condensate flows through an F&T steam trap and returns to the boiler.
  • Using another temperature sensor signal, the controller determines if the steam in the heat exchanger supply line is hot enough and that it’s free of condensate.
  • The SKDESC controller slowly opens the steam modulating valve feeding steam to the distributor’s horizontal header dispersion channel. Any condensate falls on the heat exchanger and is re-evaporated.
  • The steam escapes the dispersion system through multiple engineered eyelets on the vertical tubes and mixes with the airflow to maintain the desired humidity level.

Application

The SKD steam injection system is the ultimate solution for applications where clean low pressure steam is available, such as:

  • Hospitals / Health Care Institutions
  • Museums
  • Laboratories
  • Universities
  • Airports

Overview

  • Low Pressure Steam
  • Temperature Sensor
  • F&T Steam Trap
  • Steam Separator
  • Steam Control Valve
  • Steam Distribution System
  • Channels and Header
  • Steam Ejector Eyelets
  • Condensate Return
  • Drain
  • SKDESC Controller
Clear Selection
PCR
option
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
SKD multi-steam HD overview
SKD multi-steam HD overview
L2 L1 L1 L2 L2 L3 L3 L4 L4 L5 L5 L5 L6 M1 M2 M2 M2 R1 R1 R2 R2 R3 R3 R4 R4
SKD | Multi-Steam Distribution
Multi-Steamtm HD
LEARN MORE
Click on image or bullets for more product info.
Uses low pressure steam from an in-house boiler through a strainer to remove any foreign material.
Monitors steam temperature and detects abnormal condensate level to ensure safe and efficient operation.
Float and thermostatic steam trap comes with universal four port design. Eliminates any remaining condensate from the steam line.
Supplies condensate-free steam to the steam control valve, while discharging condensate to the steam trap.
Electronic steam control valve provides full modulation of the low pressure steam flow to the steam distributor for a better control of the humidity level.
  • Custom designed to fit your application.
  • Multiple vertical dispersion channels mounted on a single horizontal header.
  • Steam escapes through multiple eyelets and mixes with the airflow to maintain the desired humidity level.
  • Refer to patent pending HD Technology.
  • Double wall 304 stainless steel with encapsulated Armacell UT/SolaflexTM foam insulation
  • Internal design ensures optimum efficiency (during operation, channels are cool to touch)
  • Refer to patent pending HD Technology
  • 304 stainless steel rated at 450°F (232°C).
  • Internal slope returns condensate to channel.
  • Prevents condensate ejection.
  • Refer to patent pending HD Technology.
Any remaining condensate flows to the condensate return line back to the boiler.

Also refer to optional PCR:
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
Remaining condensate from the header goes to drain.

Also refer to optional PCR:
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
  • Pre-configured for each humidifier
  • Centralized wiring of sensors, valves and humidity controls
  • Controls sequences of operation for optimal efficiency
  • BACnet or Modbus compatible (optional)
  • Configuration and diagnostics menu

Features

  • Custom designed with Humidisoft to meet your specific steam capacity and non-wetting distance requirements.
  • Drain-free operation (eliminates water and energy waste) with optional PCR patent-pending pressurized condensate return system.
  • Includes HD technology – a high efficiency insulated distributor.
    • Wasted energy reduced by up to 85%
    • Investment payback with energy savings in appx. 15 months
    • Prevents condensate ejection
    • 100% stainless steel construction (reduces maintenance)
    • Patent-pending technology
  • Header with built-in slope for improved condensate elimination.
  • Drain-free operation (eliminates water and energy waste) with optional PCR patent-pending pressurized condensate return system.
  • Includes SKDESC electronic steam controller.
    • Pre-configured for each humidifier
    • Centralized wiring of sensors, valves and humidity controls
    • Controls sequences of operation for optimal efficiency
    • BACnet or Modbus networked communication (optional)
    • Configuration and diagnostics menu
  • Lowest heat transferred to the air stream.
  • Medium to high capacities: 2 - 750 kg/h. Higher capacities also available.
  • Short non-wetting distance.

Networked Communication

  • BACnet® (optional)
    • MS/TP @ 9600, 19200, 38400, or 76800 bps
    • Set MAC address via controller menu
    • Manual or automatic device instance configuration
    • Automatic Baud Rate Detection
    • Over 65 BACnet Objects available for status, operation and configuration
  • Modbus® (optional)
    • 9600, 19200, 38400, or 57600 bps
    • Set MAC address via controller menu
    • Automatic Baud Rate Detection
    • Configurable parity and stop bits
    • Over 65 parameters available for status, operation and configuration

Operation

This configuration consists of multiple vertical dispersion channels mounted on a single horizontal header.

  • Low pressure steam from an in-house boiler enters the SKD steam supply line.
  • The steam flows through a steam separator to separate steam and condensate. Condensate flows through an F&T steam trap and returns to the boiler.
  • Using the temperature sensor signal, the controller determines if the steam is hot enough and that the steam supply is free of condensate.
  • Upon a demand for humidity, the SKDESC controller slowly opens the steam supply modulating valve feeding steam the distributor’s horizontal header dispersion channel.
  • The steam escapes the dispersion system through multiple engineered eyelets on the vertical tubes and mixes with the airflow to maintain the desired humidity level.
  • Remaining condensate trickles down the header’s built-in slope, then through an F&T steam trap and goes to drain. For drain-free operation refer to optional PCR Patent-Pending Pressurized Condensate Return system.

Application

The SKD steam injection system is the ultimate solution for applications where clean low pressure steam is available, such as:

  • Hospitals / Health Care Institutions
  • Museums
  • Laboratories
  • Universities
  • Airports

Overview

  • Low Pressure Steam
  • Temperature Sensor
  • F&T Steam Trap
  • Steam Separator
  • Steam Control Valve
  • Steam Distribution System
  • Condensate Return
  • Drain
  • SKDESC Controller
Clear Selection
PCR
option
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
SKD multi-steam SD overview
SKD multi-steam SD overview
L2 R1 R1 R2 R2 R3 R3 R4 R4 R5 R5 R6 R6 M1 M2 M2 M2 L1 L1 L2 L2
SKD | Multi-Steam Distribution
Multi-Steamtm SD
LEARN MORE
Click on image or bullets for more product info.
Uses low pressure steam from an in-house boiler through a strainer to remove any foreign material.
Monitors steam temperature and detects abnormal condensate level to ensure safe and efficient operation.
Float and thermostatic steam trap comes with universal four port design. Eliminates any remaining condensate from the steam line.
Supplies condensate-free steam to the steam control valve, while discharging condensate to the steam trap.
Electronic steam control valve provides full modulation of the low pressure steam flow to the steam distributor for a better control of the humidity level.
  • Custom designed to fit your application.
  • Multiple vertical dispersion channels mounted on a single horizontal header.
  • Steam escapes through multiple nozzles and mixes with the airflow to maintain the desired humidity level.
  • Built-in slope for improved condensate elimination
Any remaining condensate flows to the condensate return line back to the boiler.

Also refer to optional PCR:
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
Remaining condensate from the header goes to drain.

Also refer to optional PCR:
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
  • Pre-configured for each humidifier
  • Centralized wiring of sensors, valves and humidity controls
  • Controls sequences of operation for optimal efficiency
  • BACnet or Modbus compatible (optional)
  • Configuration and diagnostics menu

Features

  • Custom designed with Humidisoft to meet your specific steam capacity and non-wetting distance requirements.
  • Header with built-in slope for improved condensate elimination.
  • Drain-free operation (eliminates water and energy waste) with optional PCR patent-pending pressurized condensate return system.
  • Includes SKDESC electronic steam controller.
    • Pre-configured for each humidifier
    • Centralized wiring of sensors, valves and humidity controls
    • Controls sequences of operation for optimal efficiency
    • BACnet or Modbus networked communication (optional).
    • Configuration and diagnostics menu.
  • Lowest capital cost steam injection system.
  • Lowest heat transferred to the air stream.
  • Medium to high capacities: 2 - 750 kg/h. Higher capacities also available.
  • Short non-wetting distance.

Networked Communication

  • BACnet® (optional)
    • MS/TP @ 9600, 19200, 38400, or 76800 bps
    • Set MAC address via controller menu
    • Manual or automatic device instance configuration
    • Automatic Baud Rate Detection
    • Over 65 BACnet Objects available for status, operation and configuration
  • Modbus® (optional)
    • 9600, 19200, 38400, or 57600 bps
    • Set MAC address via controller menu
    • Automatic Baud Rate Detection
    • Configurable parity and stop bits
    • Over 65 parameters available for status, operation and configuration

Operation

This configuration consists of multiple vertical dispersion tubes mounted on a single horizontal header.

  • Low pressure steam from an in-house boiler enters the SKD steam supply line.
  • The steam flows through a steam separator to separate steam and condensate. Condensate flows through an F&T steam trap and returns to the boiler.
  • Using the temperature sensor signal, the controller determines if the steam is hot enough and that the steam supply is free of condensate.
  • Upon a demand for humidity, the SKDESC controller slowly opens the steam supply modulating valve feeding steam the distributor’s horizontal header dispersion channel.
  • The steam escapes the dispersion system through multiple nozzles on the vertical tubes and mixes with the airflow to maintain the desired humidity level.
  • Remaining condensate trickles down the header’s built-in slope, then through an F&T steam trap and goes to drain. For drain-free operation refer to optional PCR Patent-Pending Pressurized Condensate Return system.

Application

The SKD steam injection system is the ultimate solution for applications where clean low pressure steam is available, such as:

  • Hospitals / Health Care Institutions
  • Museums
  • Laboratories
  • Universities
  • Airports

Compare Multi-Steam Models

HD SD Mini-Rack Multi-Tube Single-Tube
Drain-free PCR system Optional Optional Optional Optional -
HD technology Yes - - - -
Custom design with Humidisoft Yes Yes Yes Yes Yes
Electronic steam controller (SKDESC) Yes Yes Yes Yes Yes
Capacities Med-High Med-High Med-High Med-High Low
Non-wetting distance Lowest Short Short Average Average
Tubes pre-assembled on header Yes Yes Yes - -
Installation Duct or AHU Duct or AHU Duct or AHU Duct or AHU Duct
  • Mini-Rack
  • Multi-Tube
  • Single Tube

Overview

  • Low Pressure Steam
  • Temperature Sensor
  • F&T Steam Trap
  • Steam Separator
  • Isolating Valve
  • Steam Control Valve
  • Steam Distribution System
  • Condensate Return
  • SKDESC Controller
Clear Selection
PCR
option
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
SKD Mini-Rack overview
R1 R1 R2 R2 R3 R3 R4 R4 R5 R5 R6 R6 R6 M1 M1 M1 R5 M2 M2 M3 M3 M4 M4 M4 M4 L2 L2
SKD | Jacketed
Mini-Rack
LEARN MORE
Click on image or bullets for more product info.
Uses low pressure steam from an in-house boiler through a strainer to remove any foreign material.
Monitors steam temperature and detects abnormal condensate level to ensure safe and efficient operation.
Float and thermostatic steam trap comes with universal four port design. Eliminates any remaining condensate from the steam line.
SKDESC controller opens electronic isolating valve when line is condensate free to supply steam to pre-heat the tubes’ outer jackets.
  • Custom designed to fit your application.
  • Multiple horizontal tubes mounted on a single vertical header.
  • Steam escapes through multiple nozzles and mixes with the airflow to maintain the desired humidity level.
  • Tubes pre-assembled on header.
Re-boils condensate generated within the dispersion channels through an internal heat exchanger.
Supplies condensate-free steam to the steam control valve, while discharging condensate to the steam trap.
Electronic steam control valve provides full modulation of the low pressure steam flow to the steam distributor for a better control of the humidity level.
Any remaining condensate flows to the condensate return line back to the boiler.

Also refer to optional PCR:
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
  • Pre-configured for each humidifier
  • Centralized wiring of sensors, valves and humidity controls
  • Controls sequences of operation for optimal efficiency
  • BACnet or Modbus compatible (optional)
  • Configuration and diagnostics menu

Features

  • Custom designed with Humidisoft to meet your specific steam capacity and non-wetting distance requirements.
  • Drain-free operation (eliminates water and energy waste) with optional PCR patent-pending pressurized condensate return system.
  • Includes SKDESC electronic steam controller.
    • Pre-configured for each humidifier
    • Centralized wiring of sensors, valves and humidity controls
    • Controls sequences of operation for optimal efficiency
    • BACnet or Modbus networked communication (optional)
    • Configuration and diagnostics menu
  • For duct or AHU installations.
  • Designed for lowest non-wetting distances
  • Tubes pre-assembled on header.
  • Medium to high capacities: 2 - 750 kg/h. Higher capacities also available.

Networked Communication

  • BACnet® (optional)
    • MS/TP @ 9600, 19200, 38400, or 76800 bps
    • Set MAC address via controller menu
    • Manual or automatic device instance configuration
    • Automatic Baud Rate Detection
    • Over 65 BACnet Objects available for status, operation and configuration
  • Modbus® (optional)
    • 9600, 19200, 38400, or 57600 bps
    • Set MAC address via controller menu
    • Automatic Baud Rate Detection
    • Configurable parity and stop bits
    • Over 65 parameters available for status, operation and configuration

Operation

This configuration consists of multiple horizontal dispersion tubes mounted on a single vertical header.

  • Low pressure steam from an in-house boiler enters the SKD steam supply line.
  • The steam flows through a steam separator to separate steam and condensate. Any condensate flows through an F&T steam trap and returns to the boiler.
  • Using the temperature sensor signal, the controller determines if the steam is hot enough and that the steam supply is free of condensate.
  • Upon a demand for humidity, the SKDESC controller slowly opens the isolating steam valve feeding steam to preheat the tubes’ outer jacket.
  • Using another temperature sensor signal, the controller determines if the steam in the outer jacket supply line is hot enough and that it’s free of condensate.
  • The SKDESC controller slowly opens the steam modulating valve feeding steam to the distributor’s vertical header. Any condensate flows through an F&T steam trap and returns to the boiler (for drain-free operation refer to optional PCR Patent-Pending Pressurized Condensate Return system).
  • The steam escapes the dispersion system through multiple calibrated nozzles on the horizontal tubes and mixes with the airflow to maintain the desired humidity level.

Application

The SKD steam injection system is the ultimate solution for applications where clean low pressure steam is available,such as:

  • Hospitals / Health Care Institutions
  • Museums
  • Laboratories
  • Universities
  • Airports

Overview

  • Low Pressure Steam
  • Temperature Sensor
  • F&T Steam Trap
  • Steam Separator
  • Isolating Valve
  • Steam Control Valve
  • Steam Distribution System
  • Condensate Return
  • SKDESC Controller
Clear Selection
PCR
option
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
SKD Mini-Rack overview
L1 L1 L2 L2 L3 L3 L4 L4 L5 L5 L6 L6 L7 L8 L8 L7 L7 L7 L7 L9 M2 R1 R1 R1 R1 R1 R1
SKD | Jacketed
Multi-Tube
LEARN MORE
Click on image or bullets for more product info.
Uses low pressure steam from an in-house boiler through a strainer to remove any foreign material.
Monitors steam temperature and detects abnormal condensate level to ensure safe and efficient operation.
Float and thermostatic steam trap comes with universal four port design. Eliminates any remaining condensate from the steam line.
Supplies condensate-free steam to the steam control valve, while discharging condensate to the steam trap.
SKDESC controller opens electronic isolating valve when line is condensate free to supply steam to pre-heat the tubes’ outer jackets.
Electronic steam control valve provides full modulation of the low pressure steam flow to the steam distributor for a better control of the humidity level.
  • Custom designed to fit your application.
  • Multiple horizontal tubes mounted on a single vertical header.
  • Steam escapes through multiple nozzles and mixes with the airflow to maintain the desired humidity level.
Re-boils condensate generated within the dispersion channels through an internal heat exchanger.
Any remaining condensate flows to the condensate return line back to the boiler.

Also refer to optional PCR:
Patent-Pending Pressurized Condensate Return System
No drain – no maintenance
  • Pre-configured for each humidifier
  • Centralized wiring of sensors, valves and humidity controls
  • Controls sequences of operation for optimal efficiency
  • BACnet or Modbus compatible (optional)
  • Configuration and diagnostics menu

Features

  • Custom designed with Humidisoft to meet your specific steam capacity and non-wetting distance requirements.
  • Drain-free operation (eliminates water and energy waste) with optional PCR patent-pending pressurized condensate return system.
  • Includes SKDESC electronic steam controller.
    • Pre-configured for each humidifier
    • Centralized wiring of sensors, valves and humidity controls
    • Controls sequences of operation for optimal efficiency
    • BACnet or Modbus networked communication (optional)
    • Configuration and diagnostics menu
  • For duct or AHU installations.
  • Medium to high capacities: 2 - 750 kg/h. Higher capacities also available.
  • Short non-wetting distance..

Networked Communication

  • BACnet® (optional)
    • MS/TP @ 9600, 19200, 38400, or 76800 bps
    • Set MAC address via controller menu
    • Manual or automatic device instance configuration
    • Automatic Baud Rate Detection
    • Over 65 BACnet Objects available for status, operation and configuration
  • Modbus® (optional)
    • 9600, 19200, 38400, or 57600 bps
    • Set MAC address via controller menu
    • Automatic Baud Rate Detection
    • Configurable parity and stop bits
    • Over 65 parameters available for status, operation and configuration

Operation

This configuration consists of multiple horizontal dispersion tubes mounted on a single vertical header.

  • Low pressure steam from an in-house boiler enters the SKD steam supply line.
  • The steam flows through a steam separator to separate steam and condensate. Any condensate flows through an F&T steam trap and returns to the boiler.
  • Using the temperature sensor signal, the controller determines if the steam is hot enough and that the steam supply is free of condensate.
  • Upon a demand for humidity, the SKDESC controller slowly opens the isolating steam valve feeding steam to preheat the tubes’ outer jacket.
  • Using another temperature sensor signal, the controller determines if the steam in the outer jacket supply line is hot enough and that it’s free of condensate.
  • The SKDESC controller slowly opens the steam modulating valve feeding steam to the distributor’s vertical header. Any condensate flows through an F&T steam trap and returns to the boiler (for drain-free operation refer to optional PCR Patent-Pending Pressurized Condensate Return system).
  • The steam escapes the dispersion system through multiple calibrated nozzles on the horizontal tubes and mixes with the airflow to maintain the desired humidity level.

Application

The SKD steam injection system is the ultimate solution for applications where clean low pressure steam is available,such as:

  • Hospitals / Health Care Institutions
  • Museums
  • Laboratories
  • Universities
  • Airports

Overview

  • Low Pressure Steam
  • Isolating Valve
  • Steam Separator
  • Temperature Sensor
  • F&T Steam Trap
  • Steam Control Valve
  • Steam Distribution System
  • Condensate Return
  • SKDESC Controller
Clear Selection
SKD Mini-Rack overview
SKD Mini-Rack overview
R1 R1 R2 R2 R3 R3 R4 R4 R5 R4 R6 R6 L3 L3 L3 L4 L4 L5 L5
SKD | Jacketed
Single-Tube
LEARN MORE
Click on image or bullets for more product info.
Uses low pressure steam from an in-house boiler through a strainer to remove any foreign material.
Monitors steam temperature and detects abnormal condensate level to ensure safe and efficient operation.
Float and thermostatic steam trap comes with universal four port design. Eliminates any remaining condensate from the steam line.
Upon a demand, the SKDESC controller opens isolating valve to pre-heat the tube’s outer jacket.
  • Custom designed to fit your application.
  • Single horizontal tube.
  • Steam escapes through multiple eyelets and mixes with the airflow to maintain the desired humidity level.
Supplies condensate-free steam to the steam control valve, while discharging condensate to the steam trap.
Electronic steam control valve provides full modulation of the low pressure steam flow to the steam distributor for a better control of the humidity level.
Any remaining condensate flows to the condensate return line back to the boiler. No drain is necessary
  • Pre-configured for each humidifier
  • Centralized wiring of sensors, valves and humidity controls
  • Controls sequences of operation for optimal efficiency
  • BACnet or Modbus compatible (optional)
  • Configuration and diagnostics menu

Features

  • Custom designed with Humidisoft to meet your specific steam capacity and non-wetting distance requirements.
  • Includes SKDESC electronic steam controller.
    • Pre-configured for each humidifier
    • Centralized wiring of sensors, valves and humidity controls
    • Controls sequences of operation for optimal efficiency
    • BACnet or Modbus networked communication (optional)
    • Configuration and diagnostics menu
  • Mainly for duct installations.
  • Low capacity applications: 7 to 170 lb/h (2 to 77 kg/h).
  • Average non-wetting distance.

Networked Communication

  • BACnet® (optional)
    • MS/TP @ 9600, 19200, 38400, or 76800 bps
    • Set MAC address via controller menu
    • Manual or automatic device instance configuration
    • Automatic Baud Rate Detection
    • Over 65 BACnet Objects available for status, operation and configuration
  • Modbus® (optional)
    • 9600, 19200, 38400, or 57600 bps
    • Set MAC address via controller menu
    • Automatic Baud Rate Detection
    • Configurable parity and stop bits
    • Over 65 parameters available for status, operation and configuration

Operation

This configuration consists of a single horizontal tube.

  • Low pressure steam from an in-house boiler enters the SKD steam supply line.
  • Upon a demand for humidity, the SKDESC controller slowly opens the isolating steam valve feeding steam to preheat the tube’s outer jacket.
  • The steam flows through a steam separator to separate steam and condensate. Any condensate flows through an F&T steam trap and returns to the boiler.
  • Using the temperature sensor signal, the controller determines if the steam is hot enough and that the steam supply is free of condensate.
  • The SKDESC controller slowly opens the steam modulating valve feeding steam to the horizontal tube.
  • The steam escapes the dispersion system through multiple calibrated nozzles on the horizontal tube and mixes with the airflow to maintain the desired humidity level.

Application

The SKD steam injection system is the ultimate solution for applications where clean low pressure steam is available,such as:

  • Hospitals / Health Care Institutions
  • Museums
  • Laboratories
  • Universities
  • Airports

Compare Multi-Steam Models

HD SD Mini-Rack Multi-Tube Single-Tube
Drain-free PCR system Optional Optional Optional Optional -
HD technology Yes - - - -
Custom design with Humidisoft Yes Yes Yes Yes Yes
Electronic steam controller (SKDESC) Yes Yes Yes Yes Yes
Capacities Med-High Med-High Med-High Med-High Low
Non-wetting distance Lowest Short Short Average Average
Tubes pre-assembled on header Yes Yes Yes - -
Installation Duct or AHU Duct or AHU Duct or AHU Duct or AHU Duct

Overview

SKD ESC overview
Isolating
Steam Valve
Sensors
  • Interlock
  • High-Limit
  • PD Switch
Network BACnet or Modbus
optional
Steam
Control Valve
Relays
  • Steam Status
  • Alarm Status
24Vac
Temperature
Sensors
Humidity
  • External Demand/Setpoint
  • Room Humidifier Sensor
  • High Limit Humidity Sensor

Features

  • Pre-configured for each humidifier
  • Centralized wiring of sensors, valves and humidity controls
  • Controls sequences of operation for optimal efficiency
  • Conserves energy and eliminates condensate (dry operation)
  • BACnet or Modbus networked communication (optional).
  • Configuration and diagnostics menu.
  • Easy start up and trouble shooting
  • Automatic temperature sensor adjustment
  • Selectable internal or external control
  • Configurable proportional control band & dead band
  • Selectable Fahrenheit or Celsius scale
  • 24 Vac operation
  • Backlit LCD with simple icon and text driven menus

Networked Communication

  • BACnet® (optional)
    • MS/TP @ 9600, 19200, 38400, or 76800 bps
    • Set MAC address via controller menu
    • Manual or automatic device instance configuration
    • Automatic Baud Rate Detection
    • Over 65 BACnet Objects available for status, operation and configuration
  • Modbus® (optional)
    • 9600, 19200, 38400, or 57600 bps
    • Set MAC address via controller menu
    • Automatic Baud Rate Detection
    • Configurable parity and stop bits
    • Over 65 parameters available for status, operation and configuration

Overview

The objective of the Neptronic patent-pending pressurized condensate return (PCR) system is to return condensate generated within the steam dispersion tubes of a direct steam humidifier back to the boiler.


This innovative, patent-pending Neptronic technology is developed to simplify installation, provide maintenance-free and energy efficient operation, and to enable monitoring of the system for direct steam applications.

Features

PCR = Quality
  • Trusted Neptronic peripherals: PCR tank, actuators, sensors and controller are developed and manufactured by Neptronic
  • No flooding of header
  • All components are located outside the duct for easy access
PCR = Maintenance Free
  • Real-time status and monitoring
  • No systematic verification required
  • No de-scaling required
  • No downtime
PCR = No Loss of Energy
  • No gravity drain; condensate is sent back to the boiler
  • All components are low voltage
  • Only 0.013 lb/hr of steam to push 10 lb/hr of condensate

Operation

Humidifier Process

During the humidification process steam fills the header, and then travels up the steam distributors and through steam ejector eyelets. Condensate generated from heat transfer within the vertical tubes accumulates at the bottom of the header.


PCR Process
  • The header's integrated slope forces accumulated condensate to the drain port (1), which then flows into the PCR tank (2)
  • When the tank level setpoint is attained, the ESC controller opens the Steam supply valve (3) to empty the PCR tank (2) into the Condensate return (5) system.
  • The check valve (4) prevents steam pressure from reversing into the header.
  • The ESC controller continues to monitor the tank's condensate level and temperature.
  • When the PCR tank (2) is empty, the ESC controller closes the Steam supply valve (3) and opens the Relief valve(6) to partially relieve pressure in the PCR tank (2) and allow the flow of condensate from the header to the PCR tank (2).
  • With the Relief valve (6) open, the check valve (7) prevents backflow from the Condensate return (5) to the PCR tank (2).

Overview

Steam Ejection Eyelet
  • 304 stainless steel
  • Internal slope returns generated condensate
    to the steam dispersion channel.
  • Patent-pending technology
Channels
  • Double wall 304 stainless steel
    (24 gauge)
  • Encapsulated Armacell
    UT/Solaflextm foam insulation
    (1/4" on the side and 1/2" on the top)
  • Model HDT, channels are insulated,
    header is non insulated.
Header
  • Double wall 304 stainless steel (18 gauge)
  • Encapsulated Armacell UT/Solaflextm
    foam insulation 3/8"
Custom Design
  • Use our Humidisoft web application to have your steam
    distributor custom built to your exact specifications.
  • Dispersion channels can be factory or field
    assembled to the header.
Steam
Flow
Back to
Channel
Condensate
Accumulation
Levels

Benefits

  • Wasted energy is reduced by up to 85%. This includes steam supply consumption and wasted condensate generated by heat transfer from hot channel to air stream.
  • HD technology’s energy savings will pay back the difference invested in approximately 15 months. Payback varies depending on several factors, such as application, site, energy costs and other system design variables. Please do not hesitate to contact us and we will help you calculate your payback.
  • Prevents condensate ejection on start up and during any modulating humidity demand.
  • 100% stainless steel construction (reduces maintenance)

Channel and Header

  • Double wall 304 stainless steel with encapsulated Armacell UT/Solaflex™ foam insulation.
    • Channels: 24 gauge steel with insulation of 1/4" on the side and 1/2" on the top
    • Header: 18 gauge steel with insulation of 3/8"
  • Internal design ensures that insulation avoids contact with airflow and with saturated steam.
  • Outer shells are welded in place to fully cover the insulation and protect it from wear and tear.
  • Continuous seam weld to prevent any steam leak.
  • Dispersion channels can be factory or field assembled to the header.
  • Welded bottom plate, gasket and 4 screws for leak-proof mounting of each channel on the header.
  • Channels are equally spaced over the length of the header for a better steam distribution across the width of the duct or air handler.
  • Header’s internal distribution tube spans the length of the header to supply steam equally to all steam dispersion channels.

Steam Ejector Eyelets (Patent Pending)

  • 304 stainless steel rated at 450°F (232°C)
  • Internal slope returns condensate generated within the eyelet to the steam dispersion channel.
  • Steam ejection point located away from the steam dispersion grid’s external sheath.
  • Eyelets are mounted on both sides of the channels to evenly distribute steam perpendicular to the airflow.
  • Rows of eyelets on opposite channels are mounted staggered to prevent face to face steam injection of adjacent channels.

Standards

  • ASTM E84 which is a flame spread and smoke development index rating
  • UL181 test requirement for mold growth
  • ASTM G21 test requirements for fungi resistance
  • ASTM G22 test requirements for bacterial resistance

Compatibility

This unique technology is compatible with the following Neptronic humidifier series for atmospheric and low pressure steam applications, and when humidifying with the HVAC system in cooling mode.

  • SKE4: Resistive Steam Humidifiers
  • SKG4: Gas Fired Humidifiers
  • SKS4: Steam to Steam Humidifiers
  • SKD: Direct Steam Injection Humidifiers
Louis Banner

Latest News

Neptronic to attend the Air and Refrigeration Industry event organized by CETAF Neptronic to attend the Air and Refrigeration Industry event organized by CETAF
Unlocking advanced HVAC management with Neptronic Cloud-based Zoning system Unlocking advanced HVAC management with Neptronic Cloud-based Zoning system
Neptronic humidifiers feature Reverse Osmosis and Water Treatment Systems Neptronic humidifiers feature Reverse Osmosis and Water Treatment Systems
See All News