2504AA21 : Humphrey Small 4-Way Air Pilot Operated Valve (250 4AA 21)
by HUMPHREY
Original price
$491.88
-
Original price
$491.88
Original price
$491.88
$491.88
-
$491.88
Current price
$491.88
250-4AA Series, 1/4 pipe 4-Way 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. 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 | ||||||||
| Options Included | Internal compensating orifice, Mtg base | ||||||||
| Media | Air, Inert Gas | ||||||||
| 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) | 10-125 | ||||||||
| At Valved Pressure of: Recommended Pilot Pressure (psi): |
|
||||||||
| Operating Speed (cycles/min) | 600 | ||||||||
| Ambient Temperature Range (⁰F) | 0~225 | ||||||||
| Wetted Materials | Zinc diecast, Brass, SST, Buna N | ||||||||
| Weight (oz) | 38.0 |