Keystone Figure 221/222 Butterfly Valve
The Keystone Figure 221/222 is a bonded resilient seated butterfly valve for bi-directional and end-of-line service, available in wafer and lugged styles.
- The description claims bubble-tight shut-off at full rated pressure in both directions.
- The F222 lugged version is suitable for bi-directional end-of-line service at full pressure rating.
- The description claims a moulded-in O-ring in the seat for flange sealing eliminates the need for flange gaskets.