Backflow Butterfly Valve

Backflow Butterfly Valve Approval: UL/ULC listed Usage: Before sprinkle head, before and after wet alarm valve and deluge valve, high-rising building fire fighting system, industrial factory building fire protection system. Technical specification : Fire protection grooved Butterfly Valve is UL/ULC listed with pressure rating 300psi or 175psi Temperature range : -20℃ to 120℃. Structure:Butterfly type and groove end Application : Indoor and outdoor usage Double –seal  disc : resilient EPDM coated Factoroy Installed supervisiory tamper switch assembly Design standard : API 609 Groove standard ANSI/AWWA C606 Top flange standard: ISO 5211 Test standard: API 598 Model : HGD-381X / HGD-381X-175/HFGD-381X/HFGD-381X-175