MIL-DTL-3155 Valve, Temperature-Regulating Ventilation Heater, Steam Control, Naval Shipboard UseThis specification covers thermostatic-controlled steam valves for temperature regulation of shipboard ventilation heaters. These valves are of the self-operated type, requiring no separate power source such as electricity or compressed air.

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MIL-DTL-3155D(SH)

3.4.10.2 Bulb mounting. Bulbs shall have means for mounting similar to that shown on figure 2 and the

mounting frame or flange shall be drilled for mounting fasteners.

3.5 Manually operable element. When specified (see 6.2), a manually operable control element capable of

being inserted in the valve body instead of a thermostat shall be furnished. The element shall be capable of

manually controlling the flow of steam from closed position to fully open, and shall have an index marking when

practicable to show the relative position of the valve poppet with respect to its seat.

3.6 Bulkhead stuffing box. When specified (see 6.2), a bulkhead stuffing box for passing the capillary tubing

through watertight bulkheads or decks shall be provided. The stuffing box shall be constructed of brass and shall be

in accordance with figure 3.