NA51 series
Serviceable inline spring check valves, certified by ICC-ES to NSF/ANSI/CAN 372. Meets codes IPC, IRC and UPC for use in accordance with the US and Canadian plumbing codes. Sizes ½" to 2" with NPT female union, NPT male union, sweat union or press union connections, sizes ½" & ¾" PEX crimp union or PEX expansion union connections. PEX crimp fittings must comply with ASTM F 1807. PEX expansion fittings must comply with ASTM F 1960. Stainless steel body with low-lead brass or copper tailpieces, certified by and listed by ICC-ES. Check valve in NBR, POM. Maximum working temperature for one-hour 190 degrees F (88 degrees C). Operating temperature range 32 degrees F to 150 degrees F (0 degrees C to 65 degrees C). Maximum working pressure 150 psi (10 bar). Operating pressure differential 0.25 psi (sizes ½" to 1¼" ), 0.5 psi (sizes 1½" to 2"). Flow capacity: Cv 17 (½" & ¾"), Cv 30 (1" & 1¼"), Cv 75 (1½" & 2").
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