What pressure is required on the existing steam line?

The SKS4 can operate with steam pressure between 0.14 and 10 bar. Since pure, mineral-free steam is produced on the secondary side, the quality of the primary steam line does not affect final humidification quality.

What is the advantage of steam-to-steam technology?

It significantly reduces electricity consumption by using existing building steam. Primary steam does not come into direct contact with the space; steam produced on the secondary side is clean and sterile. Ideal for large facilities with a boiler room.

How does the scale management system work?

The SKS4 uses a patented water management system that reduces scale buildup. Automatic drain and flush cycles extend maintenance intervals. The LCD display notifies when maintenance is needed.

made inCanada

♨️Steam Humidifier (Steam-to-Steam)

SKS4 - Steam Humidifier (Steam-to-Steam)

Name: SKS4 - Steam Humidifier (Steam-to-Steam)
Brand: Neptronic

Steam Humidifier (Steam-to-Steam)

Steam-to-steam humidifier, 8–570 kg/hr. Produces sterile, mineral-free clean steam using process steam.

CEBACnet Certified

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SKS4

Capacity

8 – 570 kg/sa

Capacity

8 – 570 kg/sa

Technology

Steam Humidifier (Steam-to-Steam)

Scale Management

Built-in System

Panels

Insulated

Control

BACnet / Modbus

SKS4

Steam Humidifier (Steam-to-Steam)

SKS4 generates sterile, mineral-free steam using the existing building steam system. Water is heated by process steam to produce clean steam, preventing contaminants from entering the humidification system. The scale management system extends maintenance intervals.

Applications

Hospitals and sterile environments

Pharmaceutical manufacturing

Food and beverage facilities

Research laboratories

Features

Wide capacity range 8–570 kg/hr
Sterile, mineral-free steam from process steam
Scale management system for easy maintenance
Insulated external panels — minimizes energy loss
Isolation of process steam from humidity system (hygiene)
BACnet or Modbus communication interface
LCD control panel

Technical Specifications

ParameterValue

Capacity8 – 570 kg/sa

TechnologySteam Humidifier (Steam-to-Steam)

Scale ManagementBuilt-in System

PanelsInsulated

ControlBACnet / Modbus

Model Selection

SLP — Stainless Steel 316 Heat Exchanger (Raw Steam)

Output steam capacity (kg/hr) by supply steam pressure.

SLP — AISI 316 stainless steel heat exchanger

Model	Output Capacity by Supply Steam Pressure (kg/hr)					Steam Outlet
Model	0.34 Bar	0.55 Bar	0.69 Bar	0.83 Bar	1.03 Bar	Steam Outlet
SKS4-050-SLP	8	12	15	18	23	Ø51 mm
SKS4-100-SLP	15	24	30	36	45	Ø76 mm
SKS4-130-SLP	19	31	39	47	59	Ø76 mm
SKS4-190-SLP	28	46	57	69	86	Ø76 mm
SKS4-290-SLP	44	70	87	105	132	Ø100 mm
SKS4-390-SLP	59	94	118	142	177	Ø100 mm
SKS4-500-SLP	76	121	151	182	230	Ø125 mm
SKS4-690-SLP	104	167	209	251	314	Ø125 mm
SKS4-950-SLP	144	230	287	345	432	Ø2×100 mm
SKS4-1250-SLP	189	303	378	454	568	Ø2×125 mm

CHP — Copper Heat Exchanger (HTHW)

Output steam capacity (kg/hr) by HTHW temperature & pressure.

Model	Output Capacity by HTHW Temperature & Pressure (kg/hr)							Steam Outlet
Model	116°C 0.69 Bar	121°C 1.03 Bar	127°C 1.37 Bar	138°C 2.41 Bar	149°C 3.44 Bar	160°C 5.17 Bar	170°C 6.89 Bar	Steam Outlet
SKS4-200-CHP	18	30	39	69	99	150	200	1×100 mm
SKS4-333-CHP	29	50	66	116	166	249	333	2×100 mm
SKS4-667-CHP	59	100	132	231	331	499	667	2×125 mm

Typical Installation

Steam to Steam Humidification

The main energy source of the SKS4 is raw steam under pressure from an on-site central boiler or steam generating station. The raw steam passes through the heat exchanger of the humidifier, providing the energy to produce clean, sterilized steam to be distributed to the Air Handling Unit (AHU) system or duct.

Supplied from central boiler or steam generating station

Pressure control with Neptronic AQ valve

Energy efficiency with condensate return

Clean steam distribution to AHU or duct system

Self-Cleaning

Self-Cleaning Scale Management System

The SKS4 is designed with a comprehensive scale management system. The supply of cold water, located at the sloped bottom of the evaporation chamber, forces the precipitated mineral deposits into baskets that can easily be removed and cleaned.

Cold water supply automatically directs mineral deposits

Scale trap trays accessible from the top of the unit

No tools required — clean and re-install within minutes

Patented AFEC (Anti-Foaming Energy Conservation) system

System Overview

Smart Engineering Details

The SKS4 reflects engineering excellence in every detail, offering an easy-to-maintain and reliable system.

Heat Exchanger

Clean, sterilized steam production from raw steam or HTHW. Available in 316 stainless steel (low pressure steam) and copper (HTHW).

Patent-Pending Water Level Detection

Precise and reliable water level detection using 2 different sensor technologies. Self-cleaning and self-calibrating. AFEC system automatically drains when foam is detected.

Evaporation Chamber

The 304 stainless steel chamber cover is equipped with handles for easy removal without any tools.

Insulated Cabinet

Fully enclosed steel, powder-painted cabinet with 25mm thick insulation. Eliminates accidental contact with hot surfaces and saves energy.

Scale Trap Trays

Trays accessible from the top of the unit for easy maintenance and scale removal.

Modulating Control

Linear actuated globe valve providing full modulation control of low pressure steam.

Pressurized Steam Supply

Raw steam connection from central boiler with condensate return line.

Adjustable Floor Stand

Adjustable legs ensure proper leveling when installed directly on the floor.

Modulating Control

Full Modulation Control Valve

The SKS4 is supplied with a linear actuated globe valve giving full modulation control of low pressure steam. This allows precise adjustment of humidification capacity, optimizing energy efficiency and comfort levels.

Linear actuated globe valve

Full modulation for low pressure steam

Energy efficiency through precise capacity control

Smart Control

Integrated Multi-Platform Controller

The SKS4 controller is configured specifically for your SKS4 Steam Humidifier.

Menu-driven 128×64 LCD with 8 function buttons for faster configuration

User rights management: End User, Service Technician, Installer, Integrator

Quick Config menu for faster and easier installation

Independent scheduling system (operation & drain cycle)

Firmware upgradeable via SD card, USB or BACnet

Trending and alarm log viewing/export

Optional Features

BACnet MS/TP or Modbus menus with 75+ objects/registers for BMS and IoT integration

Ethernet module: BACnet IP or Modbus IP, web services for remote configuration and diagnostics

Steam Distribution

Steam Distribution Systems

For duct distribution installation, the SKS4 requires either a Multi-Steam SD, Multi-Steam HD, or S.A.M.E2 as a steam dispersion system.

Multi-Steam SD

For absorption distance less than 900 mm

S.A.M.E2

For absorption distance less than 1500 mm

Multi-Steam HD

High efficiency steam distributor with steam ejector eyelets

S.A.M.E2 Technology

High Efficiency Steam Distribution

High efficiency steam distribution with specially designed steam eyelets
Double wall 304 stainless steel
Specially designed distribution eyelets prevent condensation during start-up and proportional humidity demand
High energy savings