Related Manuals for Apollo Valves DC4A
Summary of Contents for Apollo Valves DC4A
- Page 1 BACKFLOW INSTALLATION, OPERATION & MAINTENANCE MANUAL BFMM DC4A SBF | EFFECTIVE AUGUST 1, 2016 Model DC4A / DCLF4A 1/2” - 2” Double Check Valve (DC) Backflow Preventer...
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Page 2: Table Of Contents
INSTALLATION, OPERATION, & MAINTENANCE MANUAL TABLE OF CONTENTS Double Check Valve Backflow Preventer 1/2” – 2” Section Page Description and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Installation . -
Page 3: Description And Operation
BFMM DC4A SBF DOUBLE CHECK VALVE BACKFLOW PREVENTER 1/2” – 2” I. DESCRIPTION AND OPERATION The Double Check Valve (DC) device consists of two independently-acting, spring-loaded check valves . Two resilient seated shut- off valves and four test cocks complete the assembly . Each check is designed to maintain a minimum of 1 psi across the valve during normal operation . - Page 4 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 . Customer Service (704) 841-6000 www.apollovalves.com...
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Page 5: Trouble Shooting Guide
BFMM DC4A SBF III. TROUBLE SHOOTING SYMPTOM CAUSE CORRECTIVE ACTION 1 . Check valve fails to hold a . Shut-off valve not closed a . Close #2 shut-off valve or 1 psid . completely . inspect for possible through leakage . -
Page 6: Testing Procedures
INSTALLATION, OPERATION, & MAINTENANCE MANUAL V. TESTING PROCEDURES This test is performed with the Differential Pressure Gauge Test Kit . The Differential Pressure Gauge simply measures the pressure drop across the check valve . This pressure drop is normally the same as the strength of the check valve spring . In using the Differential Pressure Gauge to test the Double Check assembly, a minimum of 1 .0 psid is required for each check valve in order for that check valve to pass the test . - Page 7 BFMM DC4A SBF TEST NO. 3 PURPOSE: To test leaking #2 shut-off valve As previously mentioned, the above test is not accurate when the second shut-off valve is leaking . The following test will expose a leaking shut-off valve .
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Page 8: Parts List (1/2"- 2")
INSTALLATION, OPERATION, & MAINTENANCE MANUAL PARTS LIST 1/2” – 2” Figure 4 Customer Service (704) 841-6000 www.apollovalves.com... - Page 9 BFMM DC4A SBF DC4A and DCLF4A Parts List Part Number Std. or Item # Description Qty. 1/2” 3/4” 1” 1-1/4” 1-1/2” 2” Body Consult Factory Label Plate Consult Factory Label Plate Tacks I-2614-00 Test Cock M x F (81 metal)
- Page 10 INSTALLATION, OPERATION, & MAINTENANCE MANUAL Inlet and Outlet Shut-Off Valves Part Number Std. or Item # Description Qty. 1/2” 3/4” 1” 1-1/4” 1-1/2” 2” 81 Mtl 77B-103-85 77B-104-83 77B-105-83 T2 Inlet NPT Ball Valve w/ “T” Not Available Handle (Standard) 77BLF-103-85 77BLF-104-83 77BLF-105-83...
- Page 11 BFMM DC4A SBF REPAIR KITS DC4A & DCLF4A 1/2” – 2” Size Check Module Rubber Kit (One kit repairs one check) (Universal, for standard & lead free valves) 1/2” 3/4” 1” 1-1/4” – 1-1/2” 2” RK4A12CMR RK4A34CMR RK4A1CMR RK4A112CMR RK4A2CMR...
- Page 12 Regional Management List now available online at http://conbra.co/rmlist 704.841.6000 800.395.7313 800.776.2756 CUSTOMER SERVICE CUSTOMER SERVICE CUSTOMER SERVICE www.apollovalves.com www.elkhartproducts.com www.lascofittings.com BFMMDC4ASBF 07/16 1,500 iTek...
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