For multiple boiler installations, two stop valves are required. Typically, one of the two valves is a gate valve, and the other is commonly a stop-check valve. In lower pressure/temperature ...

Mini-Mizer two-way and three-way solenoid valves work in temperatures from –50 to 150°F. They are available in several coil voltages, with power consumption as low as 0.5 W, and a coil force ...

Automatic Room Temperature Control Valves balance low-pressure steam or hot water systems and control the room temperature within ±1 degree F, states the manufacturer. They have a “memory disc,” which ...

About 900 1-inch 140X-9 temperature and pressure relief valves, made in the United States by Watts Regulator Co. of North Andover, Mass., because the relief valve can fail to reduce pressure ...