Instruction Manual

MAINTENANCE MANUAL
Test Procedure for Double
Check Valve Assembly
A. Beforestartingtest,allneedlevalvesandbleedvalvesontestkitmust
be closed.
B. Flush test cocks before test.
NOTE:Supplypressuregaugereadingwilldecreasewhenperformingthis
test procedure.
Test No. 1 - Check Valve No. 1
NOTE:Closeallneedlevalve"A","B"and"C"andbleedvalve"A"and"B"on
test kit.
Step1 InsureshutoffNo.1isopen,shutoffNo.2isclosed.
Step2 Installhighsidehosebetweenconnection"A"highsideandtest
cockNo.3,lowsidehosebetween"B"lowsideandtestcock
No.2andopenbothtestcockNo.2and3.
Step3 Openbleedvalve"A"tobleedairfromthehighside.Close
 "A"thenopenbleedvalve"B"tobleedlowside.Close"B".
Step4 Connectbypasshosebetweenconnection"C"bypassand
looselytotestcockNo.1.Openneedlevalves"A"highsideand
"C"bypasstoventairfrombypasshose.Tightenbypasshoseat
testcockNo.1,opentestcockNo.1.
Step5 CloseshutoffNo.1.Slowlyopenbleed"B"untildifferential
 gaugerisesto2psiandclose.Ifthedifferentialreadingdoes
 notdecrease,recordcheckvalveas"tight".
Step6 Closealltestcocksandopenbleedvalves"A"and"B".Then
closeneedlevalves"A","B"and"C"andbleedvalves"A"and"B".
Removehosesfromtestcocks.
Test No. 2 - Check Valve No. 2
Step7 MovethehighsidehosetotestcockNo.4,lowsidehoseto
testcockNo.3andopenbothtestcockNo.3and4.Remove
bypasshosefromtestcockNo.1,openshutoffvalveNo.1.
Step8 Openbleedvalve"A"tobleedairfromthehighside.Close
bleed"A"thenopenbleed"B"tobleedlowside.Closebleed"B".
Step9 ConnectbypasshoselooselytotestcockNo.1.Openneedle
valves"A"highsideand"C"bypasstoventairfromthebypasshose.
TightenbypasshoseattestcockNo.1,opentestcockNo.1.
Step10 CloseshutoffNo.1,thenslowlyopenbleed"B"untildifferential
gaugerisesto2PSIandclose.Ifthedifferentialreadingdoes
notdecrease,recordcheckastight.Closealltestcocksand
removehoses.Openbleedvalves"A"and"B".Restorevalveto
original working condition.
NOTE: The assembly will fail both the first and second check
valvetestsabove,ifshutoffNo.2leaksexcessively.Totestfor
aleakyNo.2shutoff,usethefollowingprocedure.
Test for Leaky No. 2 Shutoff
Step11 ConnectthehighsidehosetotestcockNo.1,lowsidehose
totestcockNo.4.OpentestcocksNo.1and4.Closeshutoffs
No.1and2.
Step12 Closeneedlevalve"C"bypass.Openneedlevalve"A"highside,
thenopenneedlevalve"B"lowsideoneturn,loosenhoseat
testcockNo.4toremoveair.Retightenhose.
Step13 Ifthedifferentialgaugerisesabove0thereisexcessiveleakage
atshutoffNo.2anditmustbereplacedtotesttheassembly.
Bleed Valve A
Bleed Valve B
High
(red)
Bypass
(yellow)
Low
(blue)
850 Shown
A Division of Watts Water Technologies, Inc.
USA: 4381 N. Brawley • Ste. 102 • Fresno, CA • 93722 • Tel. [phone] • Fax: [phone] • www.FEBCOonline.com
Canada: 5435 North Service Rd. • Burlington, ONT. • L7L 5H7 • Tel. [phone] • Fax: [phone] • www.FEBCOonline.ca
IS-F-TK-1 0845 EDP# 1915970 © FEBCO, 2008
Limited Warranty: FEBCO 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.
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control. This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.
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