Fire Protection Air Release Valve Thread End 
Air release valve are commonly fitted at a high point on a pipeline to continually release unwanted air during system operation to protect against surges and maintain system efficiency.

Certification: FM
Model: AV97 Series
Design Standard: AWWA C512
Size: 1/2″-1″
Rating: 200 PSI
Body: Ductile Iron
Bonnet: Ductile Iron
Body, Bonnet Coating: Epoxy Resin Fusion Bonded
Ball, Arm: Stainless Steel, ASTM SS304
Pin, Yoke, Plug: Stainless Steel, ASTM SS304
Sealing Seat: Bronze, ASTM B62
Washer, O-Ring: EPDM rubber
Connection: NPT Thread