Spherical disc design. Non-wetted stem and body - Isolated from the media. Seat overtightening prevention. Valv,Bttrfly,T57P,2-1/2",PVC,EPDM",PVC Full seat design eliminates gaskets.
Highly visible O° to 90° position indicator with 19 fine adjustment locking positions. Valv,Bttrfly,T57P,2-1/2",PVC,EPDM",PVC Full seat design eliminates gaskets..