Betts 6″ x 6″ 90° Air Emergency Valves are available in a flanged or grooved outlet. With body configurations including straight, 90° elbow, or tee styles, suppliers equip the valves with an external air cylinder.
Betts 6″ x 6″ 90° Air Emergency Valves
The Maximum Operating Pressure defines the maximum tank pressure that the valve can open against with 90 PSIG tank air pressure.
Temperature Rating: The fusible plug melts at +212°F [100°C]. The valve\’s working temperature, however, is dependent on the seal material. As indicated in the table below.
| Letter | Material | Temp. Range |
|---|---|---|
| BN | Nitrile | -40°F to +220°F [-40°C to 104°C] |
| VT | FKM | -20°F to +400°F [-29°C to 204°C] |
| TS | FEP (fluoropolymer) Encapsulated Silicone | -40°F to +400°F [-40°C to 204°C] |
CAUTION: The valve must be properly installed and maintained. Additionally, it is crucial to never bottom load through the emergency valve without first opening it. Failure to do so may result in damage to the tank and/or valve.
