The Watson McDaniel HD-Series Pilot Operated Regulators are designed for extremely accurate control of temperature and pressure in steam service applications. The HD-Series is made from Ductile Iron for extended pressure and temperature ratings. These regulators use several different control pilots, which can be attached to the valve to control pressure, temperature, or a combination of both. The different control pilots can be added or removed from the regulator body. This modular design adds to the versatility of this product. The most common option includes the P-Pilot for pressure reducing & the T-Pilot for temperature control. Pilot-Operated Regulators are more accurate and offer higher capacities than standard direct-operated regulators. They will maintain constant set outlet pressure even when inlet pressure fluctuates or variations in flow occur. With the proper selection of pilots, these regulators will accurately control temperature, pressure or a combination of both.

Model:  HD Series
Body Material:  Ductile Iron
Max Capacity (Full Port, 6" Size): 129,750 lbs/hr
Max Operating Pressure:  300 PSIG
Sizes: 1/2" - 6"
Connections: Threaded: (1/2” - 2”), 150# FLG (1” - 6”), 300# FLG (1” - 6”)