INSTALLATION, OPERATION & MAINTENANCE MANUAL 1/2” - 2” Reduced Pressure Principle (RP) Backflow Preventer RP4A | RPLF4A | RP4AN | RPLF4AN ES1602 IOM BFMMRP4ASBF rev.
INSTALLATION, OPERATION & MAINTENANCE MANUAL SECTION I II III IV V DESCRIPTION PAGE Description and Operation Installation Troubleshooting Guide Maintenance Instructions Testing Procedures 3 3 5 6 7-8 Parts List (1/2”- 2”) 9-13 Repair Kits (1/2”- 2” ) 14-15 Parts List Repair Kits 2 Customer Service (704) 841-6000 backflow.apollovalves.
BFMMRP4ASBF ES1602 REV A. I. DESCRIPTION AND OPERATION The Reduced Pressure Principle (RP) device consists of two independently-acting, spring-loaded check valves, together with a hydraulically dependent, mechanically independent pressure differential relief valve, located in the zone between the check valves. Two resilient seated shut-off valves and four test cocks complete the assembly. The first check is designed to maintain a minimum of 5 psi across the check valve.
INSTALLATION, OPERATION & MAINTENANCE MANUAL FIGURE 1 (FLOWING CONDITION) FIGURE 2 (NO FLOW CONDITION) Note: Pressures shown are for illustrative purposes only and are not necessarily indicative of any actual valve. 4 Customer Service (704) 841-6000 backflow.apollovalves.
BFMMRP4ASBF ES1602 REV A. III. TROUBLESHOOTING SYMPTOM Relief valve continuously discharges during noflow condition. CAUSE 1. 2. 3. 1. 2. Relief valve discharges continuously during flow and no-flow conditions. 3. 4. Relief valve discharges intermittently in a “spitting” action during no-flow condition. Relief valve does not open during test No. 1. #2 check valve fails to hold back-pressure. Pressure differential across #1 check valve is low during field test No. 3 (does not meet 5 PSID minimum).
INSTALLATION, OPERATION & MAINTENANCE MANUAL IV. MAINTENANCE INSTRUCTIONS 1/2” – 2” A. DISASSEMBLY - CHECK VALVES 1. 2. 3. 4. 5. Close #2 shut-off valve, then close #1 shut-off valve. Bleed pressure from the assembly by opening #2, #3, and #4 test cocks. Unscrew cap using hex head provided. Push down and turn the spring retainer 90 degrees to remove. Remove the spring. Remove the poppet from the check seat. Normally, the check seat need not be removed.
BFMMRP4ASBF ES1602 REV A. V. TESTING PROCEDURES NOTE: This is a 3 valve test kit procedure and may or may not be approved in all jurisdictions. Consult your local water purveyor for acceptable test procedures. TEST SETUP 1. 2. 3. 4. 5. 6. Notify customer water will be off; inspect device for leaks, verify the make, model, and serial number.
INSTALLATION, OPERATION & MAINTENANCE MANUAL 3 VALVE TEST KIT FIGURE 3 8 Customer Service (704) 841-6000 backflow.apollovalves.
BFMMRP4ASBF ES1602 REV A. PART NUMBER DIAGRAM - 1/2” - 2” FIGURE 4 Customer Service (704) 841-6000 backflow.apollovalves.
INSTALLATION, OPERATION & MAINTENANCE MANUAL PART NUMBER DIAGRAM - 3/4” - 1” FIGURE 5 22 5 4a 36 6 14 7 24 2 15 3 23 21 18 1 19 20 17 38 37 35 34 39 40 42 41 11 12 13 16 10 44 33 31 30 29 43 28 27 26 10 Customer Service (704) 841-6000 25 backflow.apollovalves.
BFMMRP4ASBF ES1602 REV A. RP4A AND RPLF4A PARTS LIST PART NUMBER ITEM # DESCRIPTION STD. OR LF QTY.
SHUT-OFF VALVES INSTALLATION, OPERATION & MAINTENANCE MANUAL INLET AND OUTLET SHUT-OFF VALVES ITEM # 34 35 DESCRIPTION STD. OR LF QTY.
BFMMRP4ASBF ES1602 REV A. SHUT-OFF VALVES INLET AND OUTLET SHUT-OFF VALVES ITEM # 34 35 STD. OR LF DESCRIPTION PART NUMBER QTY.
INSTALLATION, OPERATION & MAINTENANCE MANUAL REPAIR KITS RP4A & RPLF4A - 1/2” – 2” CHECK MODULE RUBBER KIT (ONE KIT REPAIRS ONE CHECK) (UNIVERSAL, FOR STANDARD & LEAD FREE VALVES) ITEM # SIZE 1/2” 3/4” REPAIR KIT MODEL NUMBER RK4A12CMR ORDERING NUMBER 4A-003-01 QTY 1” 1-1/4” – 1-1/2” 2” RK4A34CMR RK4A1CMR RK4A112CMR RK4A2CMR 4A-004-01 4A-005-01 4A-007-01 4A-008-01 not shown O-Ring Lubricant 20 Check Module Seat Disc 1 D-4771-00 D-4743-00 D-4770-00 D-4853-00 D-4873-00 7 Check Mo
BFMMRP4ASBF ES1602 REV A.
PHONE: (704) 841-6000 FAX: (704) 841-6020 Regional Management List now available online at: ES1602 IOM BFMMRP4ASBF rev.a 8/17 http://conbra.co/rmlist Customer Service (704) 841-6000 www.apollovalves.
