Williams WM87C Adjustable Pressure Protection Valve

The WM87 series valves are normally closed adjustable pressure protection valves. To protect pressure in the main air system, these valves remain closed until adequate pressure is present to supply an auxiliary system. The customer must adjust the valve to select a pressure setting at which the valve will open. Until the supply pressure exceeds this setting, the WM87 series valve remains closed. Several models are available in the WM87 series, and each functions differently when the supply pressure drops below the pressure setting.

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