BACKFLOW PREVENTERS

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8 Double Check Valve Backflow Preventers MATERIALS Body Covers Springs Seats C.V. Discs Fasteners Test Cock Handles Size 10" Contact local water authorities for installation/service requirements. Epoxy Coated (FDA Approved) Ductile Iron Epoxy Coated (FDA) Ductile Iron Stainless Steel Bronze EPDM Stainless Steel Stainless Steel DC-4S Series (Previously Model DC) 10" DOUBLE CHECK VALVE ASSEMBLIES The Apollo DC-4S Double Check Valve Backflow Preventer is designed to control crossconnections between potable water lines and substances that are objectionable, but not a health hazard. It is an economical device that is easily repaired in the line. The device consists of two independently acting, spring-loaded swing type check valves in a corrosion resistant ductile iron body. The unit is available with inlet and outlet shutoff valves. Four test cocks, three on the check valve body and one on the inlet shutoff valve, complete the assembly. OPERATION During normal flow conditions, the two check valves are held off their seats, supplying water downstream. Each check valve is designed to maintain a minimum of 1 psi across the valve during normal operation. If at any time the pressure downstream of the device increases to within 1 psi of supply pressure, both check valves will close to prevent a backflow condition from occurring. FEATURES • Patents #6,343,618 and #5,711,341 • Reversible/Replaceable seat discs • Corrosion resistant • Economical • Low head loss • Short lay length • Designed for easy maintenance • Approved for vertical and horizontal installations • Gate valves epoxy coated (FDA) ORDERING CODE - Y-STRAINER 0-Standard 1-w/ Y-strainer (shipped loose) Flow Curves : (*) Rated flow as determined by USC’s FCCC&HR and ASSE design performance standards. Customer Service 1-704-841-6000 4S - 1 X X - 0 X X SIZE G - 10" • Check valve assemblies interchangeable • Maximum working pressure 175 psig • Operating temperature range 33°F-140°F • USC FCCCHR • AWWA C-510 • ASSE 1015 • UL Classified • FM approved • Designed, manufactured, assembled and tested in South Carolina, USA VALVES FLOW (OPTIONAL) 1 -less gate valves N - N-Flow 2 -w/ NRS gate valves 3 -w/ OS&Y gate valves 5 -w/ Epoxy coated ball valves 6 -w/ OS&Y gate valve on inlet, universal post indicator plate and operating nut on outlet 7-w/Flanged inlet x Grooved outlet (OS&Y) 8 -w/Grooved x Grooved OS&Y gate valves 10 - OS&Y Flg x Grv Post Indicator Dimensions - in.(mm) – Weights - lbs.(kg) Model No. DC4S10 Ordering No. 4S-10G Body Size 10" (250) A 55-3/4 (1416) B 29-1/2 (750) C NRS 26-1/2 (673) C (OS&Y) OPEN 46 (1168) D 19-1/2 (495) E 16 (406) F 51-3/4 (1314) G 39-1/2 (1003) H (Post Indicator) 26.5 (673) Test Cocks 3/4 NPT (20) Net Wt. (Less Gate Valves) 470 (213) Net Wt. (With NRS Valves) 1175 (533) Net Wt. (With OS&Y Valves) 1320 (599) Net Wt. (With NRS Valves & Elbows) 1548 (702) Net Wt. (With OS&Y Valves & Elbows) 1693 (768) Net Wt. (With Ball Valves) N/A N/A Net Wt. (With Post Indicator) 1280 (580) Shpg. Wt. (Less Gate Valves) 565 (256) Shpg. Wt. (With NRS Valves) 1265 (574) Shpg. Wt. (With OS&Y Valves) 1638 (743) Shpg. Wt. (With NRS Valves & Elbows) 1420 (644) Shpg. Wt. (With OS&Y Valves & Elbows) 1793 (813) Shpg. Wt. (With Ball Valves) N/A N/A Shpg. Wt. (With Post Indicator) 1390 (630) *Nominal dimensions are shown. Allowances must be made for manufacturers’ tolerances.
DCDA-4SG Series Double Check Detector Backflow Preventers DCDA-4SG SERIES DOUBLE CHECK DETECTOR ASSEMBLY The Apollo ® DCDA-4SG Series Double Check Detector Assembly is designed to prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are non-health hazards. The device consists of a mainline double check valve with resilient seated shut-off valves. The by-pass serves to measure water use of up to 3 gpm. Grooved connections on an epoxy-coated ductile iron body allow for easy connection to butterfly valves or gate valves. Sizes 2-1/2”, 3", 4", 6", 8" MATERIALS Body (mainline) Epoxy-coated (FDA) Ductile Iron Bypass DC Bronze Covers (2-1/2” - 6”) Epoxy-coated (FDA) Steel Covers (8”) Epoxy-coated (FDA) Ductile Iron Check Valves (2-1/2” - 6”) Glass-Filled Noryl ® Check Valves (8”) Bronze Springs Stainless Steel Seat Discs Chloramine-Resistant EPDM Test Cock Handles Stainless Steel FEATURES • Lightweight • Short lay length • Low pressure loss • Modular check valves • Individual access to check valves • Reversible/replaceable seat discs • Approved for vertical and horizontal installations • Gate valves epoxy coated (FDA) ORDERING CODE - SIZE 9 - 2-1/2” 0 - 3” A - 4” C - 6” E - 8” METER OPTION C - Cubic feet/min E - Gallons/min G - Less meter Example: 4SG-60A-E7 = 4” size with meter in gpm and OS&Y flanged x grooved shut-off valves • Corrosion resistant epoxy-coated ductile iron body • UL Classified • FM approved • USC FCCCHR • ASSE 1048 • CSA • US Patents #5,711,341 and #6,343,618 • MADE IN THE USA 4SG - 6 0 X - X [X] - X SHUT-OFF VALVES (Inlet x Outlet) 1 - Less Shut-off Valves (grooved-end body) 2 - NRS Flg x NRS Flg 3 - OS&Y Flg x OS&Y Flg 4 - OS&Y Flg x Monitored Butterfly Valve Grv 6 - OS&Y Flg x Flg Post Indicator** 7 - OS&Y Flg x OS&Y Grv 8 - OS&Y Grv x OS&Y Grv 9 - Mon. Butterfly Vlv Grv x Mon. Butterfly Vlv Grv 10 - OS&Y Flg x Grv Post Indicator** **Post indicator with plate & nut option not available in 2-1/2” size FLOW (OPTIONAL) N - N- Flow Dimensions - in(mm) - Weights - lbs.(kg) Model No. DCDA4SG212 DCDA4SG3 DCDA4SG4 DCDA4SG6 DCDA4SG8 Ordering No. 4SG-609 4SG-600 4SG-60A 4SG-60C 4SG-60E Size 2 1/2"(65) 3"(80) 4"(100) 6"(150) 8”(200) A (Butterfly Valves)* 29 (737) 29 1/2 (749) 29 3/4 (756) 32 (813) 43 (1092) A (Gate Valves)* 32 (813) 33 (838) 34 1/2 (876) 39 (991) 50 (1270) B (Grooved End Body) 17 (432) 17 (432) 16 1/2 (419) 18 (457) 27 (686) C (Butterfly Valves) 8 (200) 8 1/2 (216) 9 1/4 (235) 10 1/4 (260) 12 (300) C (OS&Y Open) 16 3/8 (416) 18 7/8 (479) 22 3/4 (578) 30 1/8 (765) 37 3/4 (959) D (Butterfly Valves) 4 1/2 (114) 4 1/2 (114) 4 1/2 (114) 4 1/2 (114) 6 1/2 (165) D (Gate Valves) 3 1/2 (89) 3 3/4 (95) 4 1/2 (114) 5 1/2 (140) 6 3/4 (171) E 9 (229) 9 (229) 9 (229) 9 (229) 10 3/4 (273) H (Post Indicator Valve) 14.75 (375) 14.80 (376) 14.80 (376) 18.75 (476) 24.42 (595) Test Cocks (NPT) 1/2 1/2 1/2 3/4 3/4 Net Wt. (Less Valves) 65 (29) 65 (29) 65 (29) 72 (33) 395 (179) Net Wt. (w/Butterfly Valves) 92 (42) 95 (42) 109 (49) 140 (64) 526 (239) Net Wt. (w/OS&Y Valves) 161 (73) 186 (84) 220 (100) 321 (146) 872 (397) *Nominal dimensions are shown. Allowances must be made for manufacturers’ tolerances. www.apollovalves.com 9
Page 1 and 2: MADE IN THE USA BACKFLOW PREVENTERS
Page 3 and 4: SELECTION GUIDE Backflow Preventers
Page 5 and 6: Double Check Valve Backflow Prevent
Page 7: Sizes 2-1/2”, 3", 4", 6", 8" MATE
Page 11 and 12: Reduced Pressure Backflow Preventer
Page 13 and 14: Shown with option (F) - SAE threade
Page 15 and 16: RP-40 Series Reduced Pressure Backf
Page 17 and 18: RP-40S Series Reduced Pressure Back
Page 19 and 20: MATERIALS Body and covers Sizes 3",
Page 21 and 22: Reduced Pressure Backflow Preventer
Page 23 and 24: Vacuum Breaker Backflow Preventers
Page 25 and 26: PVB-4V SERIES (Previously Model PVB
Page 27 and 28: Dual Check w/ Atmospheric Port Back
Page 29 and 30: Dual Check Backflow Preventers DUC-
Page 31 and 32: Carbonated Beverage Backflow Preven
Page 33 and 34: Hose Connection Vacuum Breaker/ Lab
Page 35 and 36: “Y” Strainers Backflow Prevente
Page 37 and 38: Accessories Accessories Backflow Pr
Page 39 and 40: Accessories Accessories Backflow Pr
Page 41 and 42: Backflow Shut-Off Valves Non-Rising
Page 43 and 44: APPROVALS** TYPE OF DEVICE MODEL OR

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