BACKFLOW PREVENTERS - Conbraco Industries - #19

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www.apollovalves.com 19 Reduced Pressure Backflow Preventers Dimensions - in.(mm) – Weights - lbs.(kg) Model No. RP4A12 RP4A34 RP4A1 RP4A114 RP4A112 RP4A2 Ordering No. 4A-203-T 4A-204-T 4A-205-T 4A-206-T 4A-207-T 4A-208-T Body Size 1/2" (15) 3/4" (20) 1" (25) 1-1/4" (32) 1-1/2" (40) 2" (50) A 10-3/4 (273) 12-1/2 (318) 15-1/4 (387) 18 (457) 18-5/8 (473) 21-1/2 (546) B 7-3/8 (187) 8-1/2 (216) 9-1/2 (241) 11-3/4 (298) 11-5/8 (295) 12-3/4 (324) C 7 (178) 9-1/2 (184) 7-7/8 (200) 9-3/4 (248) 9-3/4 (248) 10-7/8 (276) D 2-3/4 (70) 7-7/8 (80) 3-1/4 (83) 4-3/4 (121) 5-1/4 (133) 5-7/8 (149) E 3-1/8 (81) 3-1/4 (86) 3-7/8 (98) 4-3/8 (111) 4-3/8 (111) 4-7/8 (124) F 3-7/8 (98) 3-7/8 (98) 4 (100) 5-3/8 (137) 5-3/8 (137) 6 (150) Net Wt. 7.2 (3.3) 8.8 (4.0) 12.6 (5.7) 18.5 (8.4) 21.5 (9.8) 33.4 (15.1) REDUCED PRESSURE PRINCIPLE The Apollo Series RP-4A Reduced Pressure Principle Backflow Preventer is designed to give maximum protection against backflow caused by either back-pressure or back-siphonage from substances that are hazardous. The durable but economical device is easily maintained in the line with modular check cartridge assemblies that require no special tools. It consists of two independently acting spring-loaded check valves with an automatic differential relief valve located between the check valves. All testcocks are mounted at the top of the unit to assure easy access during repair and maintenance when unit is installed in tight places. FEATURES • Maximum protection against back-pressure/back-siphonage • Modular check valve cartridges w/easily replaced parts • Reversible/removable chloramineresistant silicone seat discs • Low head pressure loss • Top mounted test cocks • Internal sensing passage • ASSE 1013* (other approvals pending) • CSA B64.4 • Standard with Apollo® full port ball valves with stainless steel handles • Corrosion resistant • Maximum working pressure 175 psig • Operating temperature range 33°F-180°F • Horizontal installation approvals on 3/4” and 1”* • Designed, manufactured, assembled and tested in South Carolina, USA • 5 year, domestic warranty Sizes 1/2", 3/4", 1", 1-1/4", 1-1/2", 2" RP-4A Series MATERIALS Body and Covers Bronze Springs 300 Series SS Seat Discs Chloramine-resistant Silicone Diaphragm Nitrile and Nylon Check Modules Glass-Filled PPO O-rings Chloramine-resistant EPDM Ball Valve Handles Stainless Steel Contact local water authorities for installation/service requirements. Example: 4A-215-T4LL = 1” Reduced Pressure Backflow Preventer with strainer, union ball valves and locking lever handles See page 52 for air gap drain information. 4A [X] - 2 X X - TXX Y-STRAINER 0-Standard 1-w/ Y-strainer (shipped loose) SHUT-OFF VALVES 1-less ball valves 2-w/ball valves (Standard) 3-w/OS&Y gate valves 4-w/union ball valves 9-w/butterfly shutoffs with supervisory switches SIZE 3-1/2” 4-3/4" 5-1" 6-1-1/4" 7-1-1/2" 8-2" OPTIONS (CAN BE COMBINED) F-SAE threaded test cocks (standard 3/4”, 1”) L-lever handle (3/4” & 1” only) LL-locking lever handles (1-1/4”, 1-1/2”, 2”) LR -Locking round handles (1/2”, 3/4”, 1”) ORDERING CODE - 4A - Standard 4ALF - Lead Free SEE PAGE 60 FOR FLOW CURVES