Wabco 9753030720 is an unloading valve for truck air systems, a genuine Wabco part from Pro Gear and Transmission built to the original equipment specification. In an air system, unloading is what lets the compressor stop pumping once the reservoirs are up to pressure, which saves engine power. This valve is the version with a one way valve and without a tire inflating valve. Listed ratings include an opening pressure of 174 psi, a cut-out pressure of 123.28 psi and a maximum operating pressure of 362.6 psi. Supersedes part number(s) S975-303-072-0. Call us to confirm proper fit.
Features
Wabco unloading valve with one way valve, without tire inflating valve
Opening pressure 174 psi and cut-out pressure 123.28 psi
Maximum operating pressure 362.6 psi, temperature range -40°C to +80°C
Two mounting holes, port threads M22 x 1.5 and M12 x 1.5
Supersedes part number(s) S975-303-072-0
Tech Specs
- Brand: WABCO
- Type: With one way valve
- Version: Without tire inflating valve
- Opening pressure: 174 psi
- Cut-out pressure: 123.28 psi
- Maximum operating pressure: 362.6 psi
- Temperature range: -40°C to +80°C
- Mounting: 2x Ø 8.8 mm
- Port 1: M22 x 1.5
- Port 21: M22 x 1.5
- Port 22: M12 x 1.5
- Port 23: M12 x 1.5
- Port 3: Union Ø 0.79 in
- Port 4: M12 x 1.5
- Size: 110 x 174 x 60 mm
