19 ※ PP and PVDF ball valves of the Socket End type and PVDF ball valves of the Spigot End type are welded valves. Notes : 1. There is a dead space in a ball valve. Volatile liquids, such as a hydrogen peroxide(H2O2)and Sodium hypochlorite (NaClO) may vaporize in 　　　　　 the dead space, thus causing an abnormal pressure increase in the valve. (Important: Gas is compressible. Thus if pressure rises abnormally, the valve can burst ejecting dangerous fragments.) �L※ See drawings on page 16 (only for flanged end type) ■ Easy to Be Automated (No Modification Required) Featuring a new integral molded top flange. The BALL VALVE TYPE 21 can easily be converted from the manual to automatic without replacing the body. ■ Simple Installation on Panel Piping New bottom stand with an insert hole allows the valve to be secured on bench or panel only by inserting a metallic insert. ■ Double-O-ring The stem uses a double-O-ring, sealing arrangement improving durability sealing performance. The upper O-ring groove is deeper than the lower O-ring groove. Because of this design, the stem would break first at the upper O-ring groove, acting as a back up seal. ■ Multi Functional Handle Removing the handle and placing the raised lugs into the carrier allow for easy disassembly of the valve. *The handle has other colors. (blue, white, yellow)(Option) FEATURES BALL VALVE TYPE 21・21α 15mm - 100mm(1/2inch - 4inch) MATERIAL AND WORKING TEMPERATURE Body Material Working Temperature ℃（°F） Max.Working Pressure(at R.T.) MPa{kgf/cm2}[PSI] End Connecters Socket End Threaded End Flanged End Spigot End Unplasticized Polyvinyl Chloride(PVC) 0 - 50( 30 - 120) 1.6｛16.3｝［230］ ○ ○ ○ − Chlorinated Polyvinyl Chloride(C-PVC) 0 - 90( 30 - 195) 1.6｛16.3｝［230］ ○ ○ ○ − Polypropylene(PP) −20 - 80(−5 - 175) 1.0｛10.2｝［150］ ○ ○ ○ ○ Polyvinylidene Fluoride(PVDF) −20 - 100(−5 - 210) 1.6｛16.3｝［230］ ○ ○ ○ ○ PARTS & MATERIALS No. DESCRIPTION Pcs. MATERIAL No. DESCRIPTION Pcs. MATERIAL �@ BODY 1 PVC、C-PVC、PP、PVDF �H O-RING(B) 1 EPDM、FKM、etc �A BALL 1 PVC、C-PVC、PP、PVDF �I O-RING(C) 2 EPDM、FKM、etc �B CARRIER 1 PVC、C-PVC、PP、PVDF �J O-RING(D) 1 EPDM、FKM、etc �C END CONNECTOR 2 PVC、C-PVC、PP、PVDF �K O-RING(E) 1 EPDM、FKM、etc �D UNION NUT 2 PVC、C-PVC、PP、PVDF �L STOP RING 2 PVDF(used for flanged End) �E STEM 1 PVC、C-PVC、PP、PVDF �M HANDLE 1 ABS �F SEAT 2 PTFE �G O-RING(A) 2 EPDM、FKM、etc No. DESCRIPTION Pcs. MATERIAL No. DESCRIPTION Pcs. MATERIAL �@ BODY 1 PVC、C-PVC、PP、PVDF �H O-RING(B) 2 EPDM、FKM、etc �A BALL 1 PVC、C-PVC、PP、PVDF �I CUSHION 2 EPDM、FKM、etc �B CARRIER 2 PVC、C-PVC、PP、PVDF �J O-RING(D) 1 EPDM、FKM、etc �C END CONNECTOR 2 PVC、C-PVC、PP、PVDF �K O-RING(E) 1 EPDM、FKM、etc �D UNION NUT 2 PVC、C-PVC、PP、PVDF �L STOP RING 2 PVDF(used for flanged End) �E STEM 1 PVC、C-PVC、PP、PVDF �M HANDLE 1 ABS �F SEAT 2 PTFE �N SCREW 1 STAINLESS STEEL(304) �G O-RING(A) 2 EPDM、FKM、etc ● 15mm(1/2inch) − 50mm(2inch) ● 65mm(21/2inch) − 100mm(4inch) ■ Locking Device (Option) The handle lock can be done by full-open (close) ■ NSF Product NSF("NSF/ANSI STANDARD 61" Drinking Water System Components-Health Effects)Product. :BALL VALVE TYPE 21・21 α (Material: PVC+EPDM,FKM) *Certified products bear an NSF Certification Mark. DIAPHRAGM VALVE BUTTERFLY BALL VALVE VALVE SWING CHECK VALVE BALL CHECK, BALL FOOT VALVE AUTOMATIC WATER GATE VALVE GAUGE VALVE STOP VALVE FEEDING VALVE ROTARY ANGLE VALVE CONSTANT FLOW ALFALFA VALVE VALVE Y-SEDIMENT NEEDLE VALVE STRAINER AIR RELEASE VALVE WAFER CHECK VALVE