Watson McDaniel Company Datasheets for Industrial Valves

Valves are mechanical devices that control the flow and pressure of liquids, gases, and slurries within a system. They are also known as regulators and are used in a wide variety of applications. Valves vary greatly in size, design, function, and operation.
Industrial Valves: Learn more

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Product Name Notes
The “A” Air Pilot is being used in conjunction with the PL2 Control Panel Board to regulate steam pressure. A small air regulator on the panel board can be adjusted...
The “A” Air Pilot is being used in conjunction with the PL2 Control Panel Board to regulate steam pressure. A small air regulator on the The “BP” Back-Pressure Pilot used...
The “O” Series Pressure Regulating Valves are used for reducing pressure in steam, air, and water systems. Commonly used in heating and other process applications.
The “P” or “P5” Pressure Pilots used with either the HD or D Regulator control steam pressure in steam mains or for process equipment. Pilot operated regulators will maintain constant...
The “TRP” Temperature Pilot used with either the HD or D Regulator controls temperature in various processes and systems. Some examples are: Oil heaters, Ovens, Process Heaters, Vats, Dryers and...
The 175 and 153 Series Self-Operating Temperature Regulating Valves require no external power source making them easy to install and maintain. Properly installed, the regulator is capable of maintaining temperatures...
The 3040 Series Back Pressure Valves relieve upstream pressure in a variety of processes. Automatically maintains desired maximum pressure in a vessel or system by relieving excess pressure into lower...
The 402 and 403 Series Internally Pilot-Operated Pressure Regulating Valves are used for pressure reduction on steam mains and other process equipment. Pilot-operated regulators will maintain a constant and accurate...
The 455 Series Externally-Sensed Pressure Regulating Valves are used for reducing pressure in steam, air, and water systems. Commonly used in heating and other process applications. Externally-sensed regulators are often...
The B Series Pressure Regulating Valves are used for reducing pressure in air and water systems. These regulators are commonly found in industrial plants, apartment buildings, water supply systems, schools,...
The HD or D Regulator with both the “P” Pressure Pilot and “T” Temperature Pilot is used to simultaneously control both pressure and temperature in process applications. Using both the...
The HD or D Regulator with the “A” Air Pilot is used for reducing steam pressure on steam mains and process equipment. The “A” Air Pilot can also be used...
The HD or D Regulator with the “P” Pressure Pilot is used for reducing steam pressure in piping mains and process applications. Pilot-operated regulators will maintain constant downstream pressure even...
The HD or D Regulator with the “T” Temperature Pilot is used for controlling temperature in various processes and systems, such as Oil Heaters, Ovens, Process Heaters, Vats, Dryers, and...
The model WSSCV is an all stainless steel in-line check valve for steam, gas, or liquid service. It provides tight shut-off, minimizes water hammer and also stops recycling of pumps...
The R Series & 10691 Series Back Pressure Relief Valves are used in the following applications: Water pump bypass for Irrigation, sprinkler systems on golf courses, fountains, and fire protection...
The WSVB Safety Relief Valves are used for over-pressure protec- tion on unfired pressure vessels in saturated steam systems. As safety valves open on a non-compressible fluid applica- tion, the...
The WSVI Safety Valves are used for over-pressure protection on unfired pressure vessels in saturated steam systems. As safety valves open on a non-compressible fluid application, the disc lifts directly...
Typically used for automatic operation, remote control, programmed cycling, sequential function interlocks with other equipment, and emergency shut-off in case of power failure.
Copper bulb, stainless steel well with grommet, used with HD or D regulator
Copper sensing bulb, brass union nut, used with HD or D regulator
Copper sensing bulb, brass well with grommet, used with HD or D regulator
Copper sensing bulb, brass well, used with HD or D regulator

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