SVX Hazardous Area Energized to Open Air Shut Off Valve
The Chalwyn SVX hazardous area, flameproof series of butterfly air intake shutoff valves are ATEX approved for Zone 1, Gas Group IIB, T4 (135°C) or Zone 21 hazardous area applications. The SVX flameproof energize to open valve is designed with “fail safe” actuation. When power is applied to the solenoid, the valve opens and is held open as long as power is supplied. When power is cut off for any reason such as the detection of an engine overspeed condition or other unsafe engine operating conditions, the valve will close.
Features and Benefits
- ATEX Zone 1, Group IIB, T4 (135°C) or Zone 21 approved
- Externally switched solenoid
- Automatic closure on loss of power
- Slim-fit 3”, 5”, and 8” (76mm, 127mm, and 203mm) valve body
- Basic flange mount with hose adaptors available (1½” to 8” | 38 to 203mm)
- Valve bodies and discs are PTFE coated hard anodized aluminum
- Shaft and mechanisms are stainless steel
Engines operating in Hazardous Areas:
Stationary Mining Equipment
Power Gen Sets
|End Connection||Hose Barb|
|Position Indication Available||No|
|Position Indication Logic||Valve Open - Switch Open|
|Elbow Kit||Valve Only (No Elbow)|
|Max Air Intake Temp (F)||257|
|Min Air Intake Temp (F)||-40|
|Max Pressure (psi)||TBD|
|Hazardous Location Certification||ATEX Zone 1|
|Power To Close or Energize To Run (Fail Safe)||Fail Safe|
|Models||A||B||C||D||E||F||G||H||J||K*||L (max bore)||Weight (lbs)|
*Note: Port diameters may be modified to meet specific applications. Contact us for more information.
- Power generation
- Offshore drilling
- Bulk fuel loading facilities
- Marine engines
- Petrochemical plants
The Rigsaver air intake shutoff valve is a swing-gate, spring-operated air shut-off device mounted in the air intake system. It will impede the airflow into the cylinders and positively stop the engine. It can be installed pre- or post-turbo. The Rigsaver shutoff valve can be manually or automatically controlled to respond to a variety of fault or hazard conditions.
|Interface options (contact us for detailed information)||
Manual/pull cable: This is the simplest method. The gate is released by pulling on a handle or cable attached to the tip spindle.
Manual/pneumatic: The trip is retracted by an integrated pneumatic cylinder. A manually-operated three-way valve directs air pressure to release the trip spindle. The pneumatic trip cylinder may also be tripped manually by pulling on a handle or cable attached to the trip spindle.
Electric: The trip is retracted by a 12 volt or 24 volt electric solenoid which is controlled by an automatic overspeed sensor and associated valving. The pneumatic trip cylinder may also be tripped manually by pulling on a handle or cable attached to the tip spindle.
Pneumatic: The trip spindle is retracted by a pneumatic cylinder. The trip cylinder is controlled by an automatic overspeed sensor and associated valving. The pneumatic trip cylinder may also be tripped manually by pulling on a handle or cable attached to the tip spindle.