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Non-ABS four port service relay valves in several configurations. Control Port (NPT) = 3/8'' Reservoir Port (NPT) = 1/2'' Delivery Ports (NPT) = 3/8'' Nominal Crack Pressure = 4.0 PSI
Used on Dolly & Trailer Park Brake Release Inlet Port (NPT) = 1/4'' Outlet Port (NPT) = 1/4'' Exhaust Port (NPT) = 1/4''
Used on older trailers and dollies. Newer vehicles should use the 110580 or 110570. Control Port (NPT) : 1/4'' Reservoir Port (NPT) : 3/8'' Delivery Ports (2) (NPT) : 1/4'' Nominal Crack Pressure: 2.5 PSI
This valve is used on axles with service brake chambers only. It is commonly used on dollies, trailer turntables, and other axles exempt from spring brakes requirements.
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