250-4A Series, 1/4 pipe 4-Way Air Pilot Valves feature the classic Humphrey diaphragm poppet principle. The unbalanced, air-spring return design assures reliable shifting and bubble-tight sealing actuated, and unactuated. Compact design permits close proximity mounting to work and fast cycling/quick exhaust. Excellent choice to operate up to 4 inch bore, double acting pneumatic cylinders.
| Number of Ports | 4 ports |
| Number of Positions | 2 positions |
| Valve Function | 4-way, Single Air Pilot, Spring Return |
| Piping Type | Inline, Direct Piping |
| Size (in) HxWxD | 2.88 x 3.5 x 2.31 |
| Media | Air, Inert Gas |
| Type of Operation | Air Piloted |
| Flow Capacity (Cv) | 0.83 |
| Port Size | 1/4 NPSF (Pilot Port: 1/8 NPSF) |
| Lubrication | Not required |
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