Low/High Temperatures [Classic 21 Series] 2156B3001
- ¼” to 1 ½” Port Sizes
- 2, 3 or 4-way valves
- High Temperature and Low Temperature Applications
- Readily Adaptable to Vacuum Service
- Extreme Temperature Range Options including up to 300° F (150° C) for pressure controlled models and down to -40° F (-40° C) with Buna-N Seals
Product Information
Valve Type | Directional Control |
Series | 21 |
Application | High Temperature |
Actuation | Pneumatic |
Return | Spring |
Thread Type | NPT |
Exhaust Pipe Size | 1/2" |
Construction | Poppet |
Mounting | Inline |
Pilot Type | External |
Size | 3/8 |
Duty Rating | Continuous Duty |
Ambient Temperature | 0 to 250 F (-17 to 122 C) |
Media Temperature | 0 to 300 F (-17 to 150 C) |
Fluid Media | Filtered air |
Operating Pressure | 30 to 150 psig (2 to 10 bar) |
Pilot Supply Minimum | Equal to or greater than inlet pressure |
Valve Body Material | Cast Aluminum |
Poppet/Spool Material | Aluminum and Stainless Steel |
Seal Material | Fluorocarbon |
Default Position | Normally Open |
Inlet Pipe Size | 3/8" |
Outlet Pipe Size | 3/8" |
Cv (1-4) | 2.9 |
Cv (4-3) | 4.2 |
Function | 4/2 Single Pilot |
Width | 3.91 in (99 mm) |
Length | 3.91 in (97 mm) |
Height | 3.96 in (101 mm) |
Weight | 3.0 lb (1.4 kg) |
Cv (1-2) | 2.9 |
Cv (2-3) | 4.2 |