PrintBrass Swing Check Valve This valve features a screw cap for easy clean out. A hinge-style flapper allows easy low pressure opening and operation. The metal disc makes this suitable for water, oil and gas. Specs/Part #s Approx. Wt. Lbs. Size in Inches Working Pressure Model Number .42 1/2 200 WOG SCV521T03 .58 3/4 SCV521T04 .73 1 SCV521T05 1.33 1 1/4 SCV521T06 1.83 1 1/2 SCV521T07 2.83 2 SCV521T08 11.63 3 SCV521T10 15.25 4 SCV521T11