The Viking Easy Riser® Swing Check Valve is a general purpose rubber-faced check valve approved for use in fire service systems. The valve is for use in wet system risers, preaction system risers and wherever a check valve with a drain connection and gauge connections can be utilized. When used with a flow switch on wet pipe systems not requiring a mechanical alarm, the Easy Riser® Swing Check Valve may replace an alarm check valve. Ductile iron body for less weight and extra strength. Rated to 300 psi (20.7 bar) water working pressure. Rubber-faced clapper hinged to access cover for quick removal and easy servicing. All moving parts can be serviced without removing the valve from the installed position. With the cover/clapper assembly removed, clapper rubber replacement requires removal of only one screw. Valve housing tapped for inlet and outlet pressure gauges, and system main drain.
Nominal Size: 4 in.
Friction Loss*: 13 ft.
Description: Flange / Flange
Flange Drilling: ANSI
Expressed in equivalent length of Schedule 40 pipe based on Hazen & Williams formula: C = 120.