Attributes
| Part Number | 2151B4904 |
|---|
Description
- 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
Specifications
| 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 | 1/2 |
| OUTLET PIPE SIZE | 1/2 |
| CONSTRUCTION | Poppet |
| MOUNTING | Inline |
| PILOT TYPE | External |
| MANUAL OVERRIDE | Not Included |
| SIZE | 3/4 |
| CV (1-2) | 6.9 |
| 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 | 4.56 in (116 mm) |
| WIDTH | 3.11 in (79 mm) |
| HEIGHT | 4.42 in (112 mm) |
| WEIGHT | 4.5 lb (2.0 kg) |
| VALVE BODY MATERIAL | Aluminum |
| POPPET/SPOOL MATERIAL | Aluminum and Stainless Steel |
| SEAL MATERIAL | Fluorocarbon |
PDF Documents
Product Catalog - 21 Series Vacuum
Open PDF