Low/High Temperatures [Classic 21 Series] 2156B8012
- 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
2156B8012
$1,204.00
Quantity
Estimated Ship Date: 11/22/2025
*Estimated Ship Date based on standard manufacturing times for quantities of 10 or less. Shipments will be made anywhere in the United States.
Product Information
| Valve Type | Directional Control |
| Series | 21 |
| Application | Low Temperature |
| Actuation | Pneumatic |
| Function | 4/2 Single Pilot |
| Default Position | Normally Open |
| Return | Spring |
| Thread Type | NPT |
| Inlet Pipe Size | 1-1/2" |
| Outlet Pipe Size | 1-1/2" |
| Exhaust Pipe Size | 1-1/2" |
| Construction | Poppet |
| Mounting | Inline |
| Pilot Type | External |
| Size | 1-1/4 |
| Cv (1-2) | 22.0 |
| Cv (1-4) | 22.0 |
| Cv (2-3) | 27.0 |
| Cv (4-3) | 27.0 |
| Duty Rating | Continuous Duty |
| Ambient Temperature | -40 to 120 F (-40 to 50 C) |
| Media Temperature | -40 to 175 F (-40 to 80 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 |
| Length | 4.31 in (110 mm) |
| Width | 6.49 in (165 mm) |
| Height | 7.49 in (190 mm) |
| Weight | 12.0 lb (5.4 kg) |
| Valve Body Material | Cast Aluminum |
| Poppet/Spool Material | Aluminum and Stainless Steel |
| Seal Material | Fluorocarbon |
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Low/High Temperatures [Classic 21 Series]
2156B8012
Contact Us for a 3D Model
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Low/High Temperatures [Classic 21 Series]
2156B8012
Contact ROSS Controls for Ordering Information
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