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Humphrey | Diaphragm Poppet Air Piloted Valves | 250AA-3-10-20

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250AA Series 1/4 pipe Air Pilot Valve features the classic Humphrey diaphragm-poppet principle, while incorporating an internal compensating orifice to achieve faster response times, or a "momentary signal, maintained position" function. The unbalanced, air-spring return design assures reliable shifting and bubble-tight sealing actuated, or unactuated. Compact design permits close proximity mounting to work. These rugged normally closed air valves are available in 2 or 3- way function.

Number of Ports 3 ports
Number of Positions 2 positions
Valve Function Single Pilot, Normally Closed
Piping Type Inline, Direct Piping
Size (in) HxWxD 1.97 x 1.63 DIA
Options Included Internal compensating orifice
Media Air
Type of Operation Air Piloted, w/Bleed
Flow Capacity (Cv) 0.83
Port Size 1/4 NPSF (Pilot Port: 1/8 NPSF)
Lubrication Not required
Media Filtration Not required
Pressure Range (psi) 15-125
At Valved Pressure of:
Recommended Pilot Pressure (psi):
<=30 PSI 60 PSI 90 PSI 120 PSI
22 39 58 72
Operating Speed (cycles/min) 600
Ambient Temperature Range (⁰F) -20~225
Wetted Materials Zinc diecast, Brass, SST, Buna N
Weight (oz) 8.0

ID #: 3802

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