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Home My WebLink About1990 - Sprinkler System Backflow Plumbing 1 - TOWN OF MONTVILLE Building Department t �L Elvin-oma pop)-r � Yet PERMIT TO INSTALL: �`z t° PLUMBING ' MEC IC �� New AL ELECTRICAL Repair or Replacement (circle one) Permit No. � �7�3— - Date 3 z /q b Estimated Cost 750 e0 (�, Fee , Owner 1-f-F j AddressA 0 Contractorik Erp.L ` i. Tele. AZ / S LG Add ress��G Nlrjj .L, /s6 Q Type of License , Tele L,% - ¢3/ uitt3/N License No. 2b4 Contractor or � � Authorized Agent ----;- 7--e1g7 �� Permit Approved By Signature t Building :1 .d4..✓l� Insp. 1 Official / Insp. 2 Date Date ti • • R Backflow Prevention Device b Inspection and Mce aintenan TEST Report Form initial �--' Deportment of Environmental . Retest Supplier Semiannuall 0 Quality Engineering Owner Annua • Owner of Property Mailing Address -5 , __14,11211_ .,.. Deme ---1 l� Examined by _ (Town --- L'', - (Zi � Certiftcate it - Contact Person Cross Connection I.D. !{ Device Address , J�� —'�'zetfFhone �t �c 1. (Town) • RPBP Exact . (Zip) Bronze �• DCVA:' .,,.0 Device Location. _ ' Iron [ }— • Secondary Supply or System ste !': 4- ' • '' — y rn ��t__ • '� By Pass Type of Gate Valve e/f/ gy No Yes For Unit No. Make - Size g �• Model No. i (; Serial No. •-----________ Check Valve No. I Tests Before Check Valve No.2 t Differentia!Pressure Repairs Leaked( ) — Relief Valve Closed Tight(,. Leak.ed( ) 'Pressure drop Clvs(d Tight (i Opened a • psi across Reduced Pressure -- First Check f2_____Psi *Describe -- Repairs,Parts _ and Materials used - Final Test :..= R'' Closed Tight ( ) * Pressure drop Close ( ) across Opened at. Psi First Check psi Reduced Pressure 1:1)1re,sss ' ,ed : • / /.- Owner's int -•- Lq �_ PASS PAIL A' 1, ', _ Remarks Aro Ar�� W.: .r Works O'!cid • ..�,t 1 - e _ L. t /k.' "�/ Certified �� C' --•-----" r _ .� ; ilr ester1.�� State Department of 1 Environmental Quality Engineering Plumber's Nome i `Plumber's License iJ mac® ' - C ' - INSTALLATION INSTRUCTIONS Model 825 (1 '/2" through 10") OReraion Reduced Pt' This device consists of two indePender?fy eJrS' re operating, spring loaded check valves with a Backflow Preventer ^ hydraulically dependent relief valve between the two checks. The pressure drop across the fast check valves is approximately 6.0 PSID with no how F YD of water. The section between the two checks rs referred to as the reduced pressure zone. The • Pressure drop across the second check valves is a ._ 1,. '-- minimum of 1.0 PSID with no ffoW. The relief va've consists of a hydraulically balanced diaphragm . � + • with the top side hydraulically connected to the • : f , . M � upstream side of the first check.The bottom side Is -:."t•7_ v — '- 'S` p ,r- ,,....-4.•...-4i: �, x ' .. . . ` hydraulically connected to the reduced pressure �- • zone, thus the relief valve remains closed during normal operation. The bottom side of the diaphragm is spring loaded to force the relief vale open when the pressure drop across the first check Dimensions and Weights Size „ B (and across the diaphragm) reduces to a ` 6 wf„oa imatety 2.5 PSID. pix -,n zs”' 15-1305. 9 The example sectional view below shows 2.. 26an6 16-1„6.. 1D„ S1a 7.. 90 1 2-tn g7'y.6' 221.16' 101,2. 61/„ 12 136 components and flow a p:_-al 3” 411v/6" 259,.16' 111/2" 81116 14 v2.. 260 passages with COrtej -} a'. so-i1r1 329/16.' 12 1/2" 11• 265 ding pressure readings (no flow conditions) a: ine 6 sa""� 32�''t6 173'6 various locations within the device. 6.. 14 14 21114 775 693r1E` 461,16" 13" 16" 10" 643116' SS 1/16" 16.. 30 1270 22 30" 1720 • ` , ear GATE VAI,E ' 7,7- F4 ik .trillkiik MEOLIGE17 AGM/ME i VALVE • V4 TI al it_7 . 1W":". I A4-:'.* ... H I AD' - � "Irmili MID PIM � f••• L________ .• ______1 t Of 71 4116 CALM :. „...4-..,... ...,. - . WARRANTY AU products sold by CMB Industries are subject to the following warren w 11 be free from defects in workmanship and materials for a such product is od under normal aand therecognizedCMB Industries de warrants ri al hip manufacture=pro Period of one and(1) yepr om the date of original niven ormal s. CMB INDUSTRIES MAKES NO OTHER REPRESENTATION pressure temperatureprom OR IN LAW, INCLUDING WITHOUT LIMITATION, THE WARRA R WARRANTY OF ANY KIND, EXPts and RESSED OR IMPLIED N FACT Sernce arc care void wLh respect to any such product IMINTY OF FITNESS FOR PARTICULAR PURPOSE. Trus CMB Iithueres' liability ay which is altered or tampered with b re , for failure of its products to meet the for by anyone without prior CMBoIndus r the Factory war-arty a p!aceTen of the defective product and shall exclude anyda-nage warranty shall be at Industries' sole � �'1R d EVENT SHALL CMS INDUSTRIES BE LIABLE FOR INCIDENTAL ada .Ix or laga cy A, AGES. abuse of the , in writing of any claimed defectsOR CONSEQUENTIAL DAMAGES.The buyer shall n�fia�. IN � in materials or workmansh;p, and if authorized condition as when received by the buyer. transportation r the~aL.'Ny If said returned producty portation pre-paid, to the Factoryby the factory, shall ion as thedproduct tr a.e without charge, as the hatound by the Factory to detective or to such other location directed by � Factory determine J workmanship or materials, K shay be replaced or rerai+ecy The physical or chemlca properties of CMB Industries' method's and are subfect to normal manufacturing variations products present typical, average values obtained in accordance change without notice a information is supplied da1S. 11r', tees" PPi�ed as a teChnlca service and is &,t-4e--t � The reduced yessure,ev,�must installation is r essftNe for be installed wheys it . periodic testing and ntenance- After instaiiat;on, r 6 valve and the h pressurize and breed air from relief This device will micas;onafly discharge If Contin check valves using the AIR BLEED cocks. relief valve as a result of g• water from the continual through the from the relief vara in the pipeline fouling pressure fluctuations.etc. Ins, debris no flow the tlevice e is noted wart device where hisdischarge� a check value etc. install the closed),the first check hs (downstream gate varve 1 will not be othectionabl stream gate valve and bleed becomefouled.Gose the ce If a drain is placed under the device, an e' (open No.2, 3, pressure from me device gap must exist between the relief evalve approved air and 4 ts ) Remo , 1port and the drain. cebri spring, and disc Remove acheck 3 TO INSTALLING debris from rubber seat disc holder assembly; clean any OF PRIOR FOREIGN MATERIALG IN LINE. FLUSH SUPPLY LINE open) Open upstream gate valve Failure to flush the lanes (fullthe first toklunhpressurize ris o dev supply tine. Reassemble completely may cause te c and require Mr-assemblynecks to become fouled NOTE AN derives an} operation.proper and cleaning. factory tested for tha The device must n any damage or improper operation ca pipe lin be installed in a horizontal debris or improper installation Is with an adequate air gap between the relief valvv position product claim,warranty. on, or s bl and the flport warrant claim, In case of ma►functFat or possible . floor level and surrounding flood revel. y DO NOT REMOVE D installation sketch. Contact your tical F, DEVICE FROM LINE ' Use flangedirect at(209)252-0791. Representative or F•pco Seise supports on larger devices to prevent damage. 7 The device must be ' water expansionprotected from freezing. Thermal 5 and/or water hammer downstream of the backflow preventer can cause excessive pressure increases. Excessive pressure situations should be eliminated to avoid possf+ble d ♦ amass to the system and a device. Outdoor Installation Typical Installation Indoor Installation • Pl 14-, is .__ IA- A 1 - •_, . jaw '116.0.4 - a.II - imenEl I Maintain Suitable Air Gap. / , —i Between Relief Valve Discharge ! - ." Port and Ground Level or / V Flood Level(12"Minimum) Maintain Approved Air Gap Between L Floor • Relief Valve Discharge Port and Levet Drain-Piping. Equipment Required For Test Field Testing ProcedEquipment Differential Pressure Gauge Test Kit Purpose Of Test To test the operation of the Differential Pressure Relief Valvei. and the Check Valves. Models 825 and 825Y Reduced Pressure Backflow Preventer Test Differential Relief varve The Differential Relief Valve m st operate to keep the zone between the two Oheck Valves afleast 2 PSI less than the supply pressure. Check 1. Steed all air from Valve Check Check Valves. A r= Valve Valve ty 1 Valve 2. Close Valve B on the discharge side of the Relief #2 r� B Proven t er. Backflow ' A_ # Valve I _ / 3. Connect the"high"side of the Differential to Testcock 2 and the-low" Pressure Gauge side to Testcock 3. a •, i 1. Open Testcock 2 and Testcock 3. 111011 . S. Slowly open the Bypass Valve 1 until the ft....* i Needle starts to dr Differential Gauge Test Test Test Test Cock#4 observe the reading Hold the bypass in this position and Cock dischargers the notedgfromthe gauge at the eliief Valve.The differential enthe first •Cock Cock *3 #1 #2 pressure at the time the Relief Valve opens mustBypass Valve 1 least 2 PSI. be at l Qypass Valve 2 Differential s. Gose all GaugeT Pressure Valves. Gauge NOTE Actual locatron of reit valve is on oopoppositesae ft, / « __ • ' Test Check Valve 1 The Check Valve must be at least 3 PS!more than relief valve Test Check Vahe 2 open ng pressure. The Check Valve must be tight against reverse flow under an pressure difteiennals. 1. Observe the Differentia!Gauge with Bypass1 • and Testcocks 2 and 3 oepn.The gauge should remacino at a sed 1. Connect the higd side of the Differential Pressure Gauge reading of at Meest 5 PSI.If it drops be;ow this,the Check to Testcock 4 (3rd house) C Valve is leaking and must be inspected. 2. Open testcocktt 2i lend II,With Bypass Valve i closed and Bypass Valve 2 open,observe gauge reading The differential pressure should not drop to the relief valve opening point. Restore dation 1. Restore all Valves and Testcocks to their original positions ' Trouble Shooting SYMPTOM SOLUTION 1. Discharge Relief g f rou Differential teak in No. 1 Check Valve Disassemble and clean no flow condition ng NO. 1 Check Valve ...._________"_" Inlet Pressure fluctuations Eliminate pressure- fluctuations or install r pressure reducing valve upstream of valve Outlet pressure Disassemble and clean higher than inlet No. 2 Check Valve pressure and leak in No. 2 Check Valve 2. Discharge from Differential uria flow No. 1 Check Valve Disassemble and clean Reliefcondition held open No. 1 Check Valve 3. Differential pressure Relief Valve does not Differential open during test pressure across No. 1 Repair Gate Valve Check Valve stays above 2.0 PSI due • to leaking No. 2 Gate Valve •• To Trouble Shoot Valve: I. With Differential Pressure Gauge SYMPTOM NO. 1 • Check Differential across No. 1 Check Valve.t a Reading 2to3PSI Problem Leak in No 1 or No. 2 Check Valve Ng Inlet pressure fluctuating SYMPTOM NO.2 f Reading t;. 2to3PSI_ Pro�+n No. 1 Check Valve held open U. Without Differential Prete Gauge SYMPTOM NO. 1 4 NO.2 Shut oft gate valve No 2 and Ret�ef Valve discharge I open No.4. Testcock to produce a flow greater than differential Result ,w If discharge stops Probie+n IIf discharge does not stop �` Leak in No I Check Vey* Malfunctioning Pressure Ret,ef Valve 1 ,e.....-. Service Procedure z 1. Rinse all parts with clean water before reassembly. 2. Check Assembly Repair 2. DO N07 USE ANY OIL, GREASE, SOLVENT OR PIPE ' DOPE ON ANY PARTS unless instructed to do so. a. Lift check assembly from body. j 3. Carefully Inspect diaphragms, seals and seating sur- b. Remove nut retaining disc washer and rubber disc faces for damage or debris. disc holder. 4. Use caution to avoid damaging any guiding surfaces c. Clean all parts before reassembly.Do not damage while handling parts. Do not force parts together. epoxy coating. S. Test unit after servicing to insure proper operation. Do not apply any grease or oil on the rubber seat disc. d.CAUTION: Do not attempt to remove the spring.Re to the complete maintenance manual for procedure ti MODEL 825 (1/-through 3"sizes) 3. Valve Seat Removal , • 1. Disassembty—Check Valve a. Disassemble check valve. s. Close outlet gate valve and inlet gate valve. Bleed re- b. Remove seat disc ring by unscrewing in countesr- sidual pressure by opening No.2,3 and 4 testcocks. clockwise direction. b. Remove cover bolts uniformly while holding cover in c.Unscrew bushing: place. Remove cover. CAUTION:Spring is retained In body by cover. d. Remove 0-ring. c. Lift check assembly from body. 4. Check Valve Assembly d. Unscrew bushing from cover, a. Use reverse procedure for assembly. 2. Check Assembly Repair b. Do not damage epoxy coating. a. Unscrew nut on stem and remove disc washer and c. Test unit to insure proper operation. seat disc. f: RELIEF VALVE — MODEL 825 3. Valve Seat Removal 1 (21/2"through 10"sizes) a. Remove seat ring by unscrewing in counter-clockwise r direction. 1. Relief Valve Disassembly b. Remove hushing and bushing nut. a. Remove copper tubing. C. Remove O Ring. b. Unscrew complete relief valve,excluding seat ring, f from check valve body., 4. Assembly— Check Valve NOTE:If seat ring is removed with relief valve,seat ring must be • a. Use reverse procedure for assembly. screwed from relief valve diaphragm piste. c. Remove cover bolts and nuts,diaphragm cover an b. Clean 0-Ring & surfaces on spacer. stenn and disc holder. d. Turn relief valve upside down,unscrew screw(#35)- c. Do not apply any grease or oil on the rubber seat disc. using 9/16 hex socket,and remove disphragm I d. Do not damage epoxy coating. assembly,spring button and spring. e. Test unit to insure e. Unscrew screw(N48)and remove diaphragm washe proper operation. •jr--- .- _ ._.. .__..,_. ,. - . .f,.,..�.__..And diaphragm from diaphragm button. MODEL 825 (4" rougn 10`sizes) 1. Push main stem out of bottom of body with seat discs,screw and disc washer. g. Remove 0-ring from body. 1. Check Valve Disassembly a. Close outlet gate valve then close inlet gate valve. 2. Relief Valve Assembly bleed residual pressure by opening No.2,3,and 4 ' test cocks. a. Use reverse procedure for assembly. NOTE:Lubricate 0-ring and main stem sating silicone based O-rini b. Remove cover bolts and cover.Unscrew bolts uni lubricant.when installing diaphragms make sun side of dia formly to avoid binding of the cover.The spring willpgm push the cover approximately 112 inch off the topof diaphragmsmarre otpncheutton side-�>arardd+aphragmbuttonandlha diaphragma an not pinched. the valve body. b.After completing assembly,open inlet gate valve i then bleed air from each check valve chamber and from other diaphragm sides.Open outlet gate valve c. Test device to insure proper operation. r t • • / E2CL7/ F 1 Febco, P 0 Box 8070. Fresno, California 93747 (209) 252-0791 Telex 33-7616 CMB FSO A Div!SIOr. C= CME INDUSTRIES « N 825 E P•N 980005 4 318 ` A' ria-e-;aIs coo.,cr!€ a.,ltec,r