Vacuum, Low/High Temperatures [Classic 21 Series] 2151A7909
- Poppet construction for high dirt tolerance
- ROSS vacuum valves have larger orifices, allowing greater flow and easing the transport of air even though there is a small differential between the vacuum within the valve and atmospheric pressure outside the valve
- Can be mounted close to actuator, reducing length of pipe to be pressurized/exhausted on each cycle
- Internal/external pilot supply
- Near zero leakage
2151A7909
$802.00
Quantity
Estimated Ship Date: 11/29/2025
*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 | Vacuum |
| Actuation | Pneumatic |
| Function | 2/2 Single Pilot |
| Default Position | Normally Closed |
| Return | Spring |
| Thread Type | NPT |
| Inlet Pipe Size | 1-1/4 |
| Outlet Pipe Size | 1-1/4 |
| Construction | Poppet |
| Mounting | Inline |
| Pilot Type | External |
| Manual Override | Not Included |
| Size | 1-1/4 |
| Cv (1-2) | 30.0 |
| Ambient Temperature | -40 to 175 F (-40 to 80 C) |
| Media Temperature | -40 to 175 F (-40 to 80 C) |
| Fluid Media | Filtered air |
| Operating Pressure | Vacuum to 150 psig (vacuum to 10 bar) |
| Pilot Supply Minimum | Equal to or greater than inlet pressure |
| Length | 6.63 in (168 mm) |
| Width | 4.09 in (104 mm) |
| Height | 7.49 in (190 mm) |
| Weight | 11.0 lb (5.0 kg) |
| Valve Body Material | Aluminum |
| Poppet/Spool Material | Aluminum and Stainless Steel |
| Seal Material | Fluorocarbon |
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Vacuum, Low/High Temperatures [Classic 21 Series]
2151A7909
Contact Us for a 3D Model
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Vacuum, Low/High Temperatures [Classic 21 Series]
2151A7909
Contact ROSS Controls for Ordering Information
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