The 590A Series 3/4-inch pipe air pilot valve employs the classic Humphrey diaphragm lift valve principle. Its unbalanced air spring return design ensures reliable shifting and airtight sealing, whether actuated or non-actuated. The compact design allows for close installation to the working area and enables rapid cycling/quick exhaust. The robust 2-way or 3-way valve offers normally closed, standard, or optional brass body construction (for alternative media).
Media: Air, inert gases, mild liquids
Valve Function: Single pilot, normally closed
Pipe Type: Inline, direct piping
Port Size: 3/4 NPT (Pilot port: 1/8 NPSF)
Number of Ports: 3 ports
Number of Positions: 2 positions
Dimensions (inches) HxWxD: 3.12 x 4 x 3.53
Included Options: Pilot booster
Operation Type: Air-piloted
Flow Rate - SCFM @ 100 psig: 250
Flow Rate - LPM @ 6.9 bar: 7079
ESEOD (Orifice) - in (mm): 0.490 (12.46)
Flow Coefficient (Cv): 4.33
Lubrication: Not required
Pressure Range (psi): 10-125
Recommended Pilot Pressures (psi) for Valve Operation at:
<= 30 psi: 60 psi
60 psi: 90 psi
90 psi: 120 psi
120 psi::
Recommended Pilot Pressures (psi):
For valve operation up to 30 psi: 60 psi
For 60 psi operation: 90 psi
For 90 psi operation: 120 psi
(End of alternative presentation)
Operating Speed (cycles/minute): 600
Ambient Temperature Range (°F): 0 ~ 225
Wetted Materials: Aluminum, SST (stainless steel), Buna N
Weight (ounces): 25.0