The 975-303-000-0 or 9753030000 Wabco unloading valve is an air system valve with a one way valve and no tire inflating valve. Working with the governor, an unloading valve lets the air compressor stop building pressure once the system is charged, then build again when pressure drops. This one has a 76.87 psi cut-out pressure, a 145 psi opening pressure and a 362.6 psi maximum operating pressure, with M22 x 1.5 and M12 x 1.5 port threads and 2x 8.8 mm mounting. Supersedes part number(s) S975-303-000-0. A genuine Wabco part from Pro Gear and Transmission.
Features
Cut-out pressure 76.87 psi, opening pressure 145 psi
Maximum operating pressure 362.6 psi
Port threads M22 x 1.5 and M12 x 1.5
With one way valve, without tire inflating valve
Temperature range -40°C to +80°C
Lets the compressor stop building pressure once the system is charged
Tech Specs
- Brand WABCO
- Part type Premium original quality
- Product category Device
- Calculated Volume (dm³)1.2118
- Cut-out pressure 76.87 psi
- Max. operating pressure 362.6 psi
- Mounting2x Ø 8.8 mm
- Opening pressure145 psi
- Operational range7.25+4.35 psi
- Port thread 1M22 x 1.5
- Port thread 21M22 x 1.5
- Port thread 22M12 x 1.5
- Port thread 3Union Ø 0.79 in
- Port threadsM22 x 1.5
- Technical specification OE specification
- Temperature range-40°C to +80°C
- Type With one way valve
- Version Without tire inflating valve
- Size (mm x mm x mm)170 x 108 x 66
