Description
Power Products 320175P 4-way, 2-position push/pull air valve — direct aftermarket replacement for Velvac 320175. Operates any double-acting air cylinder (sliding fifth wheel, dump body, axle lift, sleeper roof vent, etc.) from a single in-cab knob. Five 1/4″-18 FPT ports, balanced spool, Nitrile seals, and stainless hardware sized for 100 psi system pressure and a -40°F to +180°F service range. Non-holding (returns to commanded position when supply pressure is restored).
Specifications
| Manufacturer | Power Products |
|---|---|
| Part Number | 320175P |
| Part Type | 4-Way 2-Position Push/Pull Air Valve, Non-Holding |
| Ports | 5 × 1/4″-18 FPT |
| Mounting | 1″ through-hole boss with nuts (included), or 3 × 9/32″ body holes |
| Normal Operating Pressure | 100 psi |
| Operating Temperature | -40°F to +180°F |
| Seals | Nitrile |
| Hardware | Stainless Steel |
| Faceplates Included | Pull to Open / Push to Close, Pull to Raise / Push to Lower |
Cross References
This valve replaces or is equivalent to the following part numbers:
- Velvac: 320175, 320-175
- OTR: OTR320175
- Tramec Sloan: 320175 (referenced in prior listing)
Applications
This 4-way push/pull valve is used to actuate double-acting air cylinders from a dash-mount knob:
- Sliding fifth-wheel air-actuated lock release
- Dump body raise / lower control
- Liftable axle (pusher / tag) raise / lower control
- Sleeper roof vents and other in-cab pneumatic accessories
Verify port size (1/4″ NPT) and faceplate label requirement before installation. Mount to the dash with the 1″ through-hole boss using the included nuts; do not exceed 100 psi service pressure.
