Watson McDaniel HD Pilot-Operated Regulating Valve
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Watson McDaniel HD Pilot-Operated Regulating Valve are designed for extremely accurate control of temperature and pressure in steam service applications. The HD Series is made of Ductile Iron for extended pressure and temperature ratings. These regulators use several different control pilots which are mounted to the valve to control pressure, temperature or a combination of both. When two or more pilots are used at the same time - for example, both a pressure and a temperature pilot - an additional pilot adapter for the second pilot is required (must indicate when ordering). HD Pilots:
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Watson McDaniel brings us another member of the HD family utilizing an air pilot called the HDA Valve.
Pressure adjustments to the regulator can be made from a remote location. A regulator placed in a difficult to reach location can now be adjusted by a control panel board placed in a convenient location. The air operated pilot insures instant response and very accurate control. The HDA valve has the ability to control pressure settings within +-1 psig.