805YD & 806YD - Watts Water Technologies
Contents
1. b NOTE On older valves the disc holder is sealed to the stem with permatex If seal is broken the stem and holder must be cleaned and new sealant ap plied Newer valves use an O Ring and permatex is not required c Do not apply any grease or oil on the rubber seat disc d Do not damage epoxy coating e Test unit to insure proper operation d Unscrew capscrew 7 1 using 9 16 hex socket e Release spring tension by unscrewing nuts on long studs Use alternating turns to keep tool parallel to valve body f Remove spring guide and stem assembly g Remove seat disc by unscrewing nut on stem h Remove guide bushing by unscrewing 3 Valve Seat Removal a Disassemble check valve b Remove seat disc ring by unscrewing in counterclock wise direction See Seat Removal Tool on page 5 for the design of a tool that will simplify this process c Remove bushing and bushing nut c Remove O ring 4 Assembly Check Valve a Use reverse procedure for assembly b Do not damage epoxy coating c Test unit to insure proper operation This device is serviced using the same procedures as the Model 805Y with the following exceptions a Mainline springs are retained on the disc holder with a clamp b For bypass Model 805YB service and repair consult maintenance manual 980116 mm805sm for more information b The meter is removed by loosening the two union nuts For specific meter service information contact the manufacturer2. 902 385YD 902 384YD 902 383YD 902 382YD 902 381YD Model 805YD 806YD Lg Mounting Kit Items 16 17 17 1 Both Ends 905 036 905 037 905 038 905 039 905 040 905 041 Model 805YD 806YD Cover Assembly Items 4 4 1 14 Aircock not shown 902 497 902 498 902 499 902 500 902 501 902 502 Model 806YD Spring Assembly Items 3 4 1 5 6 7 7 1 7 2 9 11 15 50 902 514 902 515 902 516 902 517 Model 806YD By Pass Kit without meter Items 301 through 313 905 138 905 138 905 138 905 138 905 138 Page 2 FEBCO Model 805YD amp 806YD 2 2 10 MODEL 805YD 806YD C Cut a Way gt MODEL 806YD By Pass Assembly Vertical Pipe MODEL 805YD 806YD PARTS Fig No Description QTY Fig No Description QTY Fig No Description QTY Body 1 O Ring 2 300 Meter Seat Ring 1 Capscrew 16 301 Nipple Bushing 1 O Ring 2 302 Ball Valve Washer 6 Hex Nut 2 303 Ball Valve Capscrew 6 Gasket 1 301 1 Testcock Guide 2 Capscrew 4 304 Elbow Cover 4 Hex Nut 12 305 Nipple Bushing 2 Lift Strap 2 306 Nipple Disc Holder 2 Ball Valve 3 307 1 Tailpiece Disc Washer 2 Nipple 1 308 Coupling Nut Stem 2 Nipple 2 309 Meter Washer Screw 2 O Ring 2 311 Nipple Washer 2 NRS Gate Valve 312 805Y Le
3. body d Unscrew bushing Item 4 1 from cover 2 Check Assembly Repair a Unscrew nut on stem and remove disc washer and seat disc 3 Valve Seat Removal a Remove seat ring by unscrewing in counterclockwise direction b Remove bushing and bushing nut c Remove O Ring SERVICE PROCEDURES FOR MODELS 805YD 4 10 1 Disassembly Check Valves a Close inlet and outlet shut off valves Bleed residual pressure by opening 2 3 and 4 testcocks b Remove cover bolts and cover Unscrew bolts uniformly to avoid binding of the cover The spring will push the cover approximately 1 2 off the top of the valve body 2 Check Assembly Repair a Leave check assembly in body b Install long studs in body 180 apart See Spring Removal Tool on page 5 c Place spring removal tool over stud and retain with nuts See Spring Removal Tool on page 5 CAUTION To avoid possible injury do not attempt to remove spring tension without the use of this tool NOTE Newer devices have the disc holder threaded on the stem Therefore the seat disc can be removed without releasing spring tension Threaded disc holders have four 4 cast lugs 6 lugs on 10 devices 12 high located on back side outside the spring diameter If the device being serviced does not have these lugs spring tension must be released before further disassembly SERVICE PROCEDURES FOR MODELS 806YD 4 Assembly Check Valve a Use reverse procedure for assembly
4. or their representative directly c Remove and clean in line strainer mounted in the meter inlet port d Test unit after reassemble to insure proper operation FEBCO Model 805YD amp 806YD 2 2 10 Page 4 SPRING REMOVAL TOOL C DIA 2PL S 1 DIA 1 2 STEEL PLATE MIN NOTE This information is provided to expedite servicing of FEBCO products One tool may be fabricated for use on all required sizes by drilling all holes at appropriate dimensions in a single steel plate of maximum required length CAUTION To avoid possible injury 2 MIN during use do not fabricate tool from lesser strength material or to smaller dimensions than minimums shown a D TREAD THREADED ROD STEEL e E SPRING REMOVAL TOOL DIMENSIONS Size A B Cc D E 4 9 2 4 l4 5 s 12 13 51 2 6 12 o 55 s 3 4 5 11 51 2 8 14 4 6 s 7lg 3 410 7 10 16 2 7 2 7Ig 3 410 7 SEAT RING TOOL E DIA THRU B N STD WT PIPE STEEL SEAT RING TOOL DIMENSIONS Size A B Cc D E 2 21 2 2 2 8 Ip i 1 C MILLED NOTCH C X C SQ 120 APART 3 3 8 Is 1 1 3 PLACES 4 4 9 o 1 1 6 6 10 5g 1 1 8 8 12 Sle 1 1 10 10 15 3 1 1 Page 5 FEBCO Model 805YD amp 806YD 2 2 10
5. 3 4 x Close 3 4 x Close 90 Elbow Bronze Ie 1 2 Ie 3 4 Tee Bronze 1 2 x 1 2 x 12 3 4 x 3 4 x3J4 3 4 x 3 4 x 3 4 Nipple Bronze 12x5 3 4 x6 3 4 x6 3 44 x6 Bushing Bronze lo x34 Nipple Bronze 3 4 x 21 2 3 4 x 21 2 3 4 x 21 2 Used in the Model 806YD only These parts are commercially available through most hardware distributors or retailers Shut off valves testcocks flange gaskets etc are also commercially available but not listed The water meter is a 5 s x 3 4 size Several brands are USC approved for use on the Model 806YD Contact the factory for additional information WARRANTY All products manufactured and sold by CMB Industries Inc carry with them the following warranty CMB Industries Inc warrants to the original purchaser who is the end user all products manufactured by it will be free from defects in workmanship and material for a period of one 1 year from the date of original shipment CMB Industries Inc also warrants that all internal components of 2 through 2 Model 850 860 and 2 through 1 Model 766 products will be free from defects in workmanship and material for a period of five 5 years from the date of original shipment and also that the body only of the through 1 s Model 765 will be subject to a lifetime warranty against damage by freezing This warranty is applicable provi
6. FEBCO Operation and Maintenance 805YD 806YD Double Check and Double Check Detector Assembly 2 10 805YD 806YD Shown with OS amp Y Shut offs FEATURES AND OPERATING PROCEDURES This device consists of two independently operating poppet type check valves Each check valve is spring loaded to maintain a minimum of 1 PSIG differential pressure across the check in a no flow condition In a normal flow condition the checks open an amount correspond ing to the flow rate During a backflow backpressure situation the seat discs close and seal to prevent any flow reversal Sizes 21 2 through 10 805YD include two spring loaded Y pattern check valves with epoxy coated ductile iron bodies and bronze trim two cast iron shut off valves and four testcocks for field testing All valves are flanged type and the unit is shipped completely assembled The Model 806YD device consists of a mainline double check valve with a metered 3 4 by pass double check valve connected around the mainline checks The mainline pressure drop is slightly higher than the by pass thus all small flow up to the crossover point approx 9 GPM is through the by pass Above the crossover point flow is through the mainline and the by pass The FEBCO 806YD Device main line unit consists of two independent spring loaded Y pattern check valves two shutoff valves and four testcocks The spring loaded poppets in conjunction
7. at disc or seat ring Disassemble and replace D Damaged guide holding check open Disassemble and replace guide pin and or sleeve bushing E Weak or broken spring Disassemble and replace spring Symptom 2 Cause Solution Chatter during flow conditions A Worn or damaged guide Disassemble amp repair or replace guide Symptom 3 Cause Solution Low flows passing through the A Mainline check fouled Disassemble and clean mainline valve 806YD only B Meter strainer plugged Disassemble and clean C Damaged mainline seat disc or seat Disassemble and replace D Broken mainline spring Disassemble and replace HOW TO ORDER REPAIR KITS 1 Locate item number and kit number in this maintenance manual 2 Verify the size of the valve the parts are to be used for 3 Provide full model number located on I D plate 4 Record kit number 5 A serial number located on the I D plate will assist in ordering the proper kits 6 Contact your local FEBCO Parts Distributor REPAIR KITS 805YD 806YD Assemblies Kits Description 21 2 3 4 6 8 10 Model 805YD Spring Assembly Items 3 4 1 5 6 7 7 1 7 2 9 11 15 50 905 086 905 088 905 467 902 469 902 471 902 473 Model 805YD 806YD Rubber Parts Items 11 14 50 905 059 905 060 905 061 905062 905 063 905 064 Model 805YD 806YD Seat Kit Items 2 2 1 2 2 12 902 386YD
8. ded such products are used under normal conditions within the recognized pressure flow and temperature limits and are given normal service and care CMB INDUSTRIES INC MAKES NO OTHER REPRESENTATION OR WARRANTY OF ANY KIND EXPRESSED OR IMPLIED IN FACT OR IN LAW AND EXPRESSLY DISCLAIMS ALL OTHER WARRAN TIES INCLUDING WITHOUT LIMITATION THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE In the event of a defect in material or workmanship of a product covered by this warranty CMB Industries Inc shall at its sole option repair or replace such defective product CMB Industries Inc shall not be liable for any labor required to repair or replace any product covered by this warranty This warranty is void with respect to any such product which is altered or tampered with by anyone without prior consent of CMB Industries Inc CMB Industries Inc shall not be liable under any circumstances for damages caused by accident misuse or abuse of the product or for failure to follow the installation maintenance or operating instructions INNO EVENT SHALL CMB INDUSTRIES BE LIABLE FOR CONSEQUENTIAL INCIDENTAL INDIRECT PERSONAL INJURY PROPERTY OR PUNITIVE DAMAGES To make a claim under this warranty the buyer must notify the factory in writing within ten 10 days of discovery of any claimed defects or workmanship and if authorized by the factory shall return the product in the same condition as when received by the buyer transportation
9. prepaid to the factory or to such other location as directed by the factory If said returned product is found by the factory to be defective in workmanship or materials it shall be repaired or replaced without charge pursuant to the terms of this warranty This warranty excludes component parts or appurtenances not manufactured by CMB Industries Inc Any claims with respect to such equipment must be made to the manufacturer thereof in accordance with the terms of the warranty if any given by such manufacturer or pursuant to such warranties as may exist by law The physical or chemical properties of CMB Industries Inc products represent typical average values obtained in accordance with test methods and are subject to normal manufacturing variations This information is supplied as a technical service and is subject to change without notice FEBCO is a product of SPX VALVES amp CONTROLS ISO 9001 Certified FEBCO Backflow Prevention P O Box 8070 Fresno CA 93747 8070 559 252 0791 Fax 559 453 9030 www FEBCOonline com mms05lg 2 02 Copyright 2002 SPX Valves amp Controls SERVICE PROCEDURES FOR MODELS 805YD 21 3 1 Disassembly Check Valves a Close inlet and outlet shut off valves Bleed residual pressure by opening 2 3 and 4 testcocks b Remove cover bolts uniformly while holding cover in place Remove cover CAUTION Spring is retained in body by cover c Lift spring and check assembly from
10. ss Shutoff s Spring 2 OS amp Y Gate Valve 313 Coupling Seat Disc 2 Used in the Model 806YD only FEBCO Model 805YD amp 806YD 2 2 10 Page 3 Description Material 21 2 3 4 MODEL 805YD 806YD COMMERICAL PARTS 6 8 10 Screw Brass 3 g 16 x 11 2 3 s 16 x2 3 s 16 x2 3 s 16 x2 O Ring Buna N 568 238 31 2 x33 ax la 568 246 4 12 x43 4x1 l8 568 254 51 2 x59 4x1 8 568 264 7127314x a 568 273 91 2 x10x s 105 16 10 16x s Cap Screw SS The 14 x1 7he 14 x1 12 13 x 11 4 58 11 x 1 2 3 4 10 x 1 2 3 4 10 x 1 4 O Ring Buna N 568 244 4 14 x4 1 ox g 568 252 51 4x51 2x1 8 568 263 7 14 x7 12x 568 272 91 2 x93 4x1 la 568 451 11x111 2x 4 123 4 x13x g Lock Nut Brass 3 3 24 Elastic 3 3 24 Elastic 3 4 16 Elastic 3 4 16 Elastic 7l 14 Elastic 7l 14 Elastic Bolt amp Nut Steel 58 11 x 2 4 58 11 x 2 2 5 8 11 x 25 4 344 10 x3 34 10 x 3 4 7l 9 x 3 2 Ball Valve Brass 1 2 IPS 200 1 2 IPS 200 1 2 IPS 200 3 4 IPS 200 3 4 IPS 200 3 4 IPS 200 O Ring Buna N 568 014 1 2 x 5 ax 16 568 014 1 2 x 5 ax 1M6 568 116 3 4 x 1516x The 568 116 3 4 x 1516X The 568 118 Tla x 11hex 3 32 568 118 Tla x 11hex 3 32 Nipple Bronze lex Close 3 4 x Close
11. with soft elastomer discs provide drip tight closure against backflow The Y pattern valve design provides low pressure loss at the high flow rates The shutoff valves are OS amp Y type UL listed for fireline service The by pass line assembly consists of a water meter in series with a Model 805YB 3 4 double check valve The meter is the total type with accurate registration between 1 and 20 gpm flow rates The static pressure drop across both checks is approximately 2 PSI less than the mainline check valves Consult local codes before installing any Backflow Prevention assembly GENERAL SERVICE PROCEDURES General service instructions applicable to all sizes Rinse all parts with clean water prior to assembly DO NOT USE ANY PIPE DOPE OIL GREASE OR SOLVENT ON ANY PARTS unless instructed to do so Do not force parts Parts should fit freely together Excess force may cause damage and render the device inoperable Carefully inspect seals seating surfaces etc for damage or debris Test unit after servicing to insure proper operations Refer to applicable parts list and figures for more information Ds ONO a ir A table on the back page provides size and material information for standard parts non special design These parts can usually be purchased locally from parts distributors rather than special order from the factory 8 Some water conditions can cause a buildup of calcium or similar material deposits on some moving parts Normall
12. y this condition would not occur on devices used in systems with varying flow rates The scraping action of moving parts helps to remove any deposits However with devices used on static systems such as firelines any deposits would not be scraped away and could interfere with the check valve operation Devices in these applications should be disassembled and inspected on a periodic basis depending on water quality Any deposits should be removed from the center guiding stem and bushings Use care to avoid damage to guiding surfaces TESTING All mechanical devices should be inspected on a regular basis to ensure they are working correctly The assembly should be tested at time of initial installation after servicing or maintenance and at least annually thereafter Acceptable test procedures are published by Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California USC The American Water Works Association AWWA The American Society of Sanitary Engineering ASSE Series 5000 and the Canadian Standards Associa tion CAN CSA B64 10 Please consult the regulatory authority in your area for more specific information FEBCO Model 805YD amp 806YD 2 2 10 Page 1 TROUBLE SHOOTING GUIDE Symptom 1 Cause Solution Check fails to hold 1 0 PSID min A Debris on sealing surfaces Disassemble and clean B Leaking shut off valve Disassemble and clean or repair C Damaged se
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