54 ■ Backflow Prevention The valves prevent backflow in horizontal or vertical lines. They require minimal back pressure to seat completely. ■ Compact and Light The BALL CHECK and BALL FOOT VALVES are so compact and light that they can be installed in a limited space. They are also easy to maintain, because of minimal internal parts. ● SINGLE UNION BALL CHECK VALVE 3 8 4 9 5 1 2 7 6 3 4 9 5 1 2 4a 3 4 9 5 1 2 4a L L L . . . . L n〜φh t1 t2 n〜φh φD φD1 φd P.C.D.C φD1 φd1 φD1 φd1 φd1 φd1 φd2 φd2 φd φd φd φd P.C.D.C Note : 1): used for C-PVC Body, threaded end 15mm(1/2inch) - 25mm(1inch) 2):used for Flanged End 3):DIN Flanged End is not available. ● FLANGED END ● SOCKET END ● THREADED END BALL CHECK AND BALL FOOT VALVE 15mm - 100mm(1/2inch - 4inch) FEATURES SPECIFICATIONS Body material Unplasticized Polyvinyl Chloride(PVC), Chlorinated Polyvinyl Chloride(C-PVC) Polyvinylidene Fluoride(PVDF), Polypropylene(PP) End Connectors Socket End, Threaded End, Flanged End, Spigot End　 ※PVDF Flanged End and PP Flanged End are not available. Nominal Size 15mm(1/2inch) - 100mm(4inch) Working Temperature PVC:0℃ - 50℃(30°F - 120°F) C-PVC:0℃ - 90℃(30°F - 195°F) PVDF :−20℃ - 100℃(−5°F - 210°F) PP:−20℃ - 80℃(−5°F - 175°F) Max. Working Pressure 1.0MPa{10.2kgf/cm2}[150PSI](at R.T)……15mm(1/2inch) - 50mm(2inch) 0.7MPa{7.1kgf/cm2}[100PSI](at R.T)……80mm(3inch) - 100mm(4inch) DIMENSIONS PARTS & MATERIALS No. DESCRIPTION Pcs. MATERIAL �@ BODY 1 PVC, C-PVC, PP, PVDF �A BALL 1 PVC, C-PVC, PP, PVDF �B END CONNECTOR 1 PVC, C-PVC, PP, PVDF �C UNION NUT 1 PVC, C-PVC, PP, PVDF �D STOP RING(A) 1 PVC, C-PVC, PP, PVDF �E TS FLANGE2) 1 PVC, C-PVC �F PIPE2) 1 PVC, C-PVC �G STOP RING(B)2) 1 PVDF �H SEAT 1 EPDM,FKM,Others ○4a RING1) 1 STAINLESS STEEL304 ■ NSF Product NSF("NSF/ANSI STANDARD 61" Drinking Water System Components-Health Effects)Product. :Ball CHECK VALVE (Material:PVC+EPDM,FKM) *Certified products bear an NSF Certification Mark. φD. φd. t. . L φd . t. φd. 3 4 9 5 1 2 ● SPIGOT END DIAPHRAGM BALL VALVE VALVE BUTTERFLY VALVE SWING CHECK VALVE BALL CHECK, BALL FOOT GATE VALVE GAUGE VALVE STOP VALVE VALVE AUTOMATIC WATER FEEDING VALVE ROTARY ANGLE ALFALFA VALVE VALVE CONSTANT FLOW NEEDLE VALVE VALVE Y-SEDIMENT STRAINER AIR RELEASE VALVE WAFER CHECK VALVE