Uranus BMUV-MH-XQH- 300 -3″ Flanged End Swing Check Valve 300PSI Complies with AWWA C508 standard, Clear waterway design. Seating type is the 66resilient material to bronze seat construction, fusion bonded epoxy coated interior and exterior to AWWA C550 standard corrosion protection. Two test plugs included – Installed on one side of the valve body, Flanges to ANSI B16. 1 Class125 (other flange types available upon request).