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Summary of Contents for Apollo DCLF4AN
- Page 1 INSTALLATION, OPERATION & MAINTENANCE MANUAL 2-1/2” - 12” Double Check Valve | Double Check Detector Assembly DC4AN | DCLF4AN | DCDA4AN | DCDLF4AN | DCDA24AN | DCDA2LF4AN ES1597 IOM BFMMDC4ANLBF rev.a...
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Page 2: Table Of Contents
INSTALLATION, OPERATION & MAINTENANCE MANUAL TABLE OF CONTENTS SECTION DESCRIPTION PAGE Double Check Valve Backflow Preventer DC4AN / DCLF4AN Description and Operation Installation Troubleshooting Guide Maintenance Instructions (DC/DCDA mainline) 2-1/2” - 6” 8” - 12” Testing Procedures Double Check Valve Detector Assembly DCDA4AN / DCDALF4AN & DCDA24AN / DCDA2LF4AN... -
Page 3: Installation
ES1597 REV A. BFMMDC4ANLBF 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 check during normal operation. -
Page 4: Troubleshooting Guide
INSTALLATION, OPERATION & MAINTENANCE MANUAL III. TROUBLESHOOTING SYMPTOM CAUSE CORRECTIVE ACTION Check valve fails to hold 1 psid. 1. Shut-off valve not closed completely. 1. Close #2 shut-off valve or inspect for 2. Check valve fouled with debris. possible through leakage. 3. - Page 5 ES1597 REV A. BFMMDC4ANLBF MAINTENANCE INSTRUCTIONS B. CHECK MAINTENANCE If only cleaning of the first check is necessary, simply remove the three (3) nuts for 2-1/2” & 3” valves/ four(4) nuts for 4” & 6” valves on the black plastic disc retainer (See Figure 4). Remove the check handle and washer and lift the disc retainer and disc out of the body. Rinse the disc with clean water or replace if necessary.
- Page 6 INSTALLATION, OPERATION & MAINTENANCE MANUAL MAINTENANCE INSTRUCTIONS FIGURE 6 FIGURE 7 B. CHECK MAINTENANCE (CAN BE ACHIEVED WITHOUT REMOVING ENTIRE CHECK.) If only cleaning of either check is necessary, simply remove the six (6) nuts for 8” valves / eight (8) nuts for 10” & 12” valves on the black plastic disc retainer (See Figure 8).
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Page 7: Testing Procedures
ES1597 REV A. BFMMDC4ANLBF TESTING PROCEDURES NOTE: This is a three-valve test kit procedure. Your local water purveyor should be consulted for acceptable test procedures. This procedure is to be used on a stand-alone double check valve (DC), the mainline DC of a double check detector, and/or the bypass DC of a standard (Type 1) double check detector. - Page 8 INSTALLATION, OPERATION & MAINTENANCE MANUAL 3 VALVE TEST KIT FIGURE 9 “ A p l ” Flow Controls Customer Service (704) 841-6000 www.apolloflowcontrols.com...
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Page 9: Description And Operation
ES1597 REV A. BFMMDC4ANLBF DESCRIPTION AND OPERATION The Double Check Detector Assembly (DCDA Type 1) contains a mainline DC incorporating two spring loaded check valves and a bypass line consisting of an approved DC assembly and a water meter. The DCDA Type 2 contains a mainline DC incorporating two spring loaded check valves and a bypass line consisting of a single check valve and a water meter. - Page 10 INSTALLATION, OPERATION & MAINTENANCE MANUAL DCDA BYPASS TYPES DCDA4AN TYPE 1 DCDALF4AN TYPE 1 DCDA24N TYPE 2 DCDA2LF4AN TYPE 2 “ A p l ” Flow Controls Customer Service (704) 841-6000 www.apolloflowcontrols.com...
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Page 11: 2-1/2" - 6" Dc & Dcda (Mainline)
ES1597 REV A. BFMMDC4ANLBF PART NUMBER DIAGRAM - 2-1/2” - 6” FIGURE 10 DC4AN, DCLF4AN DCDA4AN, DCDALF4AN (MAINLINE) DCDA24AN, DCDA2LF4AN (MAINLINE) Customer Service (704) 841-6000 backflow.apollovalves.com... -
Page 12: 2-1/2" - 6" Check Valves
INSTALLATION, OPERATION & MAINTENANCE MANUAL PARTS LIST - 2-1/2” - 6” DC4AN/DCDA4AN (MAINLINE) / DCDA24AN (MAINLINE) PARTS LIST DCLF4AN/DCDALF4AN (MAINLINE) / DCDA2LF4A (MAINLINE) PARTS LIST PART NUMBER ITEM # DESCRIPTION QTY. 2-1/2” 3” 4” 6” Shut-off Valve See Pages 18 & 19... -
Page 13: 8" - 12" Dc & Dcda (Mainline)
* LEAD FREE: The wetted surfaces of this product shall contain no more than 0.25% lead by weighted average. Complies with CA AB1953, VT Act 193, MD HB372, LA HB471, and Federal Public Law 111-380. PART NUMBER DIAGRAM - 8 - 12” FIGURE 11 DC4AN, DCLF4AN DCDA4AN, DCDALF4AN (MAINLINE) DCDA24AN, DCDA2LF4AN (MAINLINE) 10” & 12” ONLY Customer Service (704) 841-6000 backflow.apollovalves.com... -
Page 14: 8" - 12" Check Valves
INSTALLATION, OPERATION & MAINTENANCE MANUAL PARTS LIST & REPAIR KITS - 8” - 12” DC4AN/DCDA4AN (MAINLINE) / DCDA24AN (MAINLINE) PARTS LIST DCLF4AN/DCDALF4AN (MAINLINE) / DCDA2LF4AN (MAINLINE) PARTS LIST PART NUMBER ITEM # DESCRIPTION QTY. 8” 10” 12” Shut-off Valve See Page 18 & 19... -
Page 15: 2-1/2" - 12" Dcda2 (Type 2) Bypass Single Check
ES1597 REV A. BFMMDC4ANLBF PART LIST - BYPASS SINGLE CHECK (TYPE 2) W977005 SINGLE CHECK VALVE (LEAD FREE*) INDIVIDUAL PARTS ARE ONLY AVAILABLE FOR BULK SALES. ITEM PART # DESCRIPTION TailPOST PLEASE REFER TO THE APPROPRIATE REPAIR KITS BELOW. K-4587-06 INDICATORece C-1844-05 Union Nut... -
Page 16: Maintenance Instructions - Bypass Single Check (Type 2)
ASSEMBLY - CHECK VALVE MODULE 1. Install new or cleaned check valve module into body (ensure check o-ring is in place). 2. Apply a thin coat of Apollo® supplied lubricant, DOW 111 or equal, on cap o-ring. ®... - Page 17 ES1597 REV A. BFMMDC4ANLBF BYPASS KITS 2-1/2" & 3" TYPE 1 BYPASS LINE Adjustment Joint Adapter Adjustment Joint O-ring Adjustment Joint Nut Meter Adapter Adjustment Joint Coupling Meter Nut (2 ea.) 1/2" DCLF4A Double Check Valve Test Cock Water Meter 1/2"...
- Page 18 INSTALLATION, OPERATION & MAINTENANCE MANUAL BYPASS KITS 4" TYPE 1 BYPASS LINE Adjustment Joint Adapter Adjustment Joint O-ring Adjustment Joint Nut Adjustment Joint Coupling Test Cock 1/2" DCLF4A Water Meter Double Check Valve 1/2" Ball Valve with Tapped Port (Note Location of Port) 1/2"...
- Page 19 ES1597 REV A. BFMMDC4ANLBF BYPASS KITS 6" TYPE 1 BYPASS LINE 1/2" Street Elbow Test Cock 1/2" Ball Valve without Tapped Port 1/2" Ball Valve with Tapped Port Meter Nut (2 ea.) (Note Location of Port) 1/2" DCLF4A Double Check Valve Meter Adapter 1/2"...
- Page 20 INSTALLATION, OPERATION & MAINTENANCE MANUAL BYPASS KITS 8" TYPE 1 BYPASS LINE 1/2" DCLF4A Double Check Valve Meter Adapter 1/2" Ball Valve without Tapped Adjustment Joint Coupling Port Test Cock 1/2" X 5-1/2" Water Meter 1/2" Ball Valve Adjustment Joint Nut Long Nipple with Tapped Port (Note Location of Port)
- Page 21 ES1597 REV A. BFMMDC4ANLBF BYPASS KITS 10" TYPE 1 BYPASS LINE 1/2" X 2" Nipple 1/2" Ball Valve without Tapped Test Cock Port 3/4" X 1/2" F X F Reducer Bushing (2 ea.) 1/2" DCLF4A Double Check Valve 1/2" Coupling 1/2"...
- Page 22 INSTALLATION, OPERATION & MAINTENANCE MANUAL BYPASS KITS 12" TYPE 1 BYPASS LINE Meter Adapter (2 ea.) 3/4" X 1/2" F X F Test Cock Reducer Bushing Water Meter 1/2" Ball Valve 1/2" X 3" Long Nipple Rubber Washer (2 ea.) with Tapped Port (Note Location of Port) 1/2"...
- Page 23 ES1597 REV A. BFMMDC4ANLBF BYPASS KITS 2-1/2" & 3" TYPE 2 Adjustment Joint Retainer Adjustment Joint Nut BYPASS Meter Nut LINE Adjustment Joint O-ring Adjustment Joint Adapter Water Meter Test Rubber Washer (2) Cock 1/2" Single Check Valve 1/2" X 2" Long Nipple 1/2"...
- Page 24 INSTALLATION, OPERATION & MAINTENANCE MANUAL BYPASS KITS 6" TYPE 2 BYPASS LINE Adjustment Joint Retainer Adjustment Joint O-ring Adjustment Joint Adapter Adjustment Joint Nut Water Meter 1/2" X 5" Nipple Rubber Washer (2) Test Cock 1/2" X 2" Nipple 1/2" Single Check Valve 1/2"...
- Page 25 ES1597 REV A. BFMMDC4ANLBF BYPASS KITS 10" TYPE 2 BYPASS Remove 1/2" Cap Before LINE Installing Bypass Line Remove 3/4" Cap Before Installing Bypass Line Rubber Washer (2) Water Meter 1/2" Single Check Valve Meter Adapter Meter Nut 1/2" X 3" Nipple 1/2"...
- Page 26 INSTALLATION, OPERATION & MAINTENANCE MANUAL BYPASS KITS 12" TYPE 2 Remove 1/2" Cap Before BYPASS Installing Bypass Line LINE Remove 3/4" Cap Before Installing Bypass Line Adjustment Joint O-ring Adjustment Joint Adapter Water Meter Meter Nut Rubber Washer (2) Adjustment Joint Nut Adjustment Joint Retainer 1/2"...
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Page 27: Maintenance Instructions - Bypass Double Check (Type 1)
CAUTION: Ensure the spring retainer orientation matches that in the parts list drawing or the device’s flow will be significantly restricted (i.e. - do not install the spring retainer upside down). 5. Apply a thin coat of Apollo® supplied lubricant, DOW 111 or equal, on cap o-ring. 6. Install cap. -
Page 28: 2-1/2" - 12" Dcda (Type 1) Bypass Dc
INSTALLATION, OPERATION & MAINTENANCE MANUAL PARTS LIST & REPAIR KITS – BYPASS DOUBLE CHECK (TYPE 1) W978705 DOUBLE CHECK VALVE (LEAD FREE*) BYPASS DC PARTS LIST ITEM PART # DESCRIPTION Q-6869-05 Body I-9024-00 Nameplate I-2614-00 Nameplate Tack 78LF-292-01 Test Cock F-3846-05 D-4881-00 Cap O-ring... -
Page 29: Shut-Off Valves
ES1597 REV A. BFMMDC4ANLBF SHUT-OFF VALVES SHUT-OFF VALVE PART NUMBERS (UL LISTED ASSEMBLIES MUST HAVE INDICATING TYPE SHUT-OFF VALVES ON INLET AND OUTLET.) SHUT-OFF VALVE OPTIONS -- 2-1/2” ASSEMBLY DESCRIPTION (INLET X OUTLET) INLET OUTLET SUFFIX FLANGE NRS X FLANGE NRS W-5310-00 W-5310-00 FLANGE OS&Y X FLANGE OS&Y... - Page 30 INSTALLATION, OPERATION & MAINTENANCE MANUAL SHUT-OFF VALVE PART NUMBERS (UL LISTED ASSEMBLIES MUST HAVE INDICATING TYPE SHUT-OFF VALVES ON INLET AND OUTLET.) SHUT-OFF VALVE OPTIONS -- 6” ASSEMBLY DESCRIPTION (INLET X OUTLET) INLET OUTLET POST PLATE OPERATING NUT SUFFIX FLANGE NRS X FLANGE NRS W-5313-00 W-5313-00 FLANGE OS&Y X FLANGE OS&Y...
- Page 31 ES1597 REV A. BFMMDC4ANLBF SHUT-OFF VALVE PART NUMBERS (UL LISTED ASSEMBLIES MUST HAVE INDICATING TYPE SHUT-OFF VALVES ON INLET AND OUTLET.) SHUT-OFF VALVE OPTIONS -- 10” ASSEMBLY DESCRIPTION (INLET X OUTLET) INLET OUTLET POST PLATE OPERATING NUT SUFFIX FLANGE NRS X FLANGE NRS W-5315-00 W-5315-00 FLANGE OS&Y X FLANGE OS&Y...
- Page 32 Phone: (704) 841-6000 Fax: (704) 841-6020 Regional Management List now available online at: http://conbra.co/rmlist Check our website for the most up-to-date information on all our products. www.apolloflowcontrols.com...
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