ModelMSHMSH& MH& MH
Optional Steam Package ShipboardElectricElectric
WaterHeatHeater
Steam Component General Configuration
The steam control valve maintains accurate water temperature in a steam fired water heater by regulating the flow of steam through the heating coil.
Adjustable
Temperature Pilot
Steam Inlet
Y Strainer 
Steam
Control
Valve
Thermostatic
Drip Trap
Condensate Outlet 
To sensing bulb in tank
Pneumatic or electronic controller (if required)
Steam Pressure Gauge
Vacuum Breaker
Steam Coil
Y Strainer
F & T Main
Condensate Trap
There are four types of steam control valves available for use on a steam fired storage water heater.
Self Operating
The valve design includes a bulb and capillary assembly charged with a thermally responsive vapor. The expansion/contraction of the vapor acts upon the valve bellows in order to control the flow of steam through the valve. No external power source is required for
operation.
Pneumatically Operated
In this configuration the ships air supply feeds a factory installed temperature controller which operates the steam control valve. The temperature controller sends a precise air signal to the steam control valve which adjusts the flow of steam into the heating coil. The temperature controller is fully adjustable from
SCFM.
Pilot Operated
A pilot operated control valve is the most widely used type of valve for standard water heating applications. In this type of valve, a temperature pilot device utilizes steam to operate the main valve. No external power source is required other than steam. This is a highly dependable temperature control system which is suitable for most applications. As an option, this valve may include a pressure reducing pilot which limits the steam
pressure to a predetermined maximum.
Electronic Operated
This control valve is similar to a pneumatically operated system, except in this case the temperature controller is a sophisticated digital display electronic device which outputs a
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