BRAKE SYSTEMS INC part description

WM147BC is a normally closed, three-way directional relay valve. A pilot pressure of 65–85 PSI must be applied to the WM147BC’s control port before the valve will open to allow supply pressure to flow to its outlet. The WM147BC will close and exhaust down-stream pressure to atmosphere when pressure at its control port descends to 65–50 PSI.

Product Attributes

Body Casting Material Die Cast Zinc Alloy
Control Port Size 1/4"-18 NPTF
Control Pressure (Ascending) To Open 65 to 85 PSI
Control Pressure (Descending) To Reclose 65 to 50 PSI
Exhaust Port Size 1/8"-27 NPTF
Flow Rating 35 SCFM at 100 PSI
Inlet Port Size 1/4"-18 NPTF
Maximum Supply Pressure 150 PSI
Mounting Type Integral Bracket and (2) Two 1/4" Fasteners
Operating temperature -20 Deg F to 200 Deg F
Outlet Port Size 1/4"-18 NPTF
Stem Material Aluminum

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