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RP-IS-909-909RPDA   1319 

EDP# 1915172 

© 2013 Watts

USA:

 Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com

Canada: 

Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca 

limited warranty:

 Watts Regulator Co. (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of 

original shipment.  In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.  

THE waRRanTy sET FORTH HEREin is GiVEn EXpREssly and is THE Only waRRanTy GiVEn By THE cOMpany wiTH REspEcT TO THE pROducT.  THE cOMpany MaKEs nO OTHER 

waRRanTiEs, EXpREss OR iMpliEd.  THE cOMpany HEREBy spEciFically disclaiMs all OTHER waRRanTiEs, EXpREss OR iMpliEd, includinG BuT nOT liMiTEd TO THE iMpliEd 

waRRanTiEs OF MERcHanTaBiliTy and FiTnEss FOR a paRTiculaR puRpOsE.

The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special 

or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting 

from labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no 

control.  This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.  

Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages.  Therefore the above 

limitations may not apply to you.  This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State.  You should consult applicable state laws to 

determine your rights.  

sO FaR as is cOnsisTEnT wiTH applicaBlE sTaTE law, any iMpliEd waRRanTiEs THaT May nOT BE disclaiMEd, includinG THE iMpliEd waRRanTiEs OF 

MERcHanTaBiliTy and FiTnEss FOR a paRTiculaR puRpOsE, aRE liMiTEd in duRaTiOn TO OnE yEaR FROM THE daTE OF ORiGinal sHipMEnT.

A Watts Water Technologies Company

waRninG:

 This product contains chemicals known to the 

State of California to cause cancer and birth defects or 

other reproductive harm.

For more information: www.watts.com/prop65

Summary of Contents for LF909

Page 1: ...this Manual for future reference Basic Installation Instructions NOTICE The flange gasket bolts for the gate valves should be re tight ened during in stal la tion as the bolts may have loos ened due to stor age and ship ping High Capacity Relief Series Location and Installation Considerations 1 Backflow preventers must be installed in high visibility locations in order to allow for immediate notic...

Page 2: ...n its proper order The gate valve with the test cock is to be mounted on the inlet side of the backflow preventer The test cock must be on the inlet side of the wedge Please see above Failure to reassemble correctly will result in possible water damage due to excessive discharge from the relief port vent and possible malfunction of the backflow pre venter 8 Installation procedures must comply with...

Page 3: ...e is filled open the downstream shutoff slowly and fill the water supply system This is necessary to avoid water hammer or shock damage G The installation of a Watts air gap with the drain line terminating above a floor drain will handle any normal discharge or nuisance spitting through the relief valve However floor drain size may need to be designed to prevent water damage caused by a cat astrop...

Page 4: ...sh Print Head wait then Push Start Test 7 Open VA then slowly open VB no more than 1 4 turn When relief valve drips push the hold button for 2 seconds Record reading must be 2 psid or more Push Stop Test 8 Close VA and VB Test No 2 Test No 2 Check Valve 9 Install bypass hose between VA and TC 4 Open VA then bleed air by loosening hose connection at TC 4 Tighten hose connection Close VA Push Start ...

Page 5: ...two spring retainers and the stem The spring re tainers are not to be removed for servicing If there is a need to re place the spring spring retainer or stem an assembled module must be obtained from the factory These modules are not interchangeable be sure to replace the first check with a first check mod ule and the second check with a second check module 6 To replace the disc on sizes 21 2 4 65...

Page 6: ...embly 5 Removal of the bottom plug and spring assembly During nor mal field service there is no need to remove the bottom plug spring assembly other than inspection It can be removed by simply unscrewing with a large pipe wrench CAUTION The spring as retained on the bottom plug is highly loaded NO attempt should be made in the field to remove the spring For replacement a complete bottom plug assem...

Page 7: ...place relief valve seat or inlet cover Electrically ground the piping system and or electri cally isolate the device with plastic pipe immediately upstream and down stream of the device B 6 Valve improperly reassembled B 6 If valve is dis as sem bled during installation caution must be exercised to install check springs in their proper location C Valve exhibits high pressure drop C 1 Fouled strain...

Page 8: ...ost of repairing or replacing other property which is damaged if this product does not work properly other costs resulting from labor charges delays vandalism negligence fouling caused by foreign material damage from adverse water conditions chemical or any other circumstances over which the Company has no control This warranty shall be invalidated by any abuse misuse misapplication improper insta...

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