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The Humphrey QE4 Quick Exhaust Valve is a high-capacity pneumatic valve designed to accelerate cylinder return by redirecting exhausting air directly out of a 3/4 exhaust port. Its operation is based on pressure differential sensing, allowing instant and efficient air discharge. Ideal for systems requiring faster response times, this valve can also function as a shuttle valve or be adapted for check or flow control by plugging or restricting the exhaust port. Compact and durable, it features a molded shuttle that ensures superior performance over traditional flat stock designs.
- Versatile Functionality: Can be used as a quick exhaust valve, shuttle valve, or check valve (with plug).
- High Flow Rate: Cv of 6.22 ensures rapid air discharge for fast cylinder cycling.
- Pressure Differential Operation: Automatically opens the exhaust path when downstream pressure drops.
- Durable Materials: Made with aluminum diecast body and polyurethane internals for reliability and long life.
- No Lubrication or Filtration Required: Maintenance-free design simplifies installation and operation.
- Compact Yet Powerful: High-performance design in a space-saving form factor.
- Wide Operating Range: Suitable for pressures from 1 to 150 psi and temperatures from -25F to 180F.
| Number of Ports | 3 |
| Number of Positions | 2 |
| Valve Function | Quick Exhaust |
| Piping Type | Inline, Direct Piping |
| Port Size | 1/2 NPT (Inlet & Outlet), 3/4 NPT (Exhaust) |
| Flow Capacity (Cv) | 6.22 |
| Type of Operation | Pressure Differential |
| Media | Air, Inert Gas |
| Lubrication Required | No |
| Filtration Required | No |
| Pressure Range | 1 to 150 PSI |
| Ambient Temperature Range | -25F to 180F |
| Wetted Materials | Aluminum Diecast, Polyurethane |
| Weight | 15 oz |
| Size (HxWxD) | 3.66 x 2.18 x 2.95 in |
| Options Included | Use as shuttle valve or check valve (plug exhaust port) |