KERR KP-3300B User Manual

thevalveacoupleofgoodblowsutilizingabrassbarandhammertoseatthevalveseatinthefluidendvalvebore.Replacethevalve
springandcovercapafterinspectingthespringandthesealofthecovercap.
ii. SUCTIONVALVES:Thesuctionvalvesarelocatedinthechamberdirectlybelowthesuctionorendvalvecovercaps.Thesuction
valvesareservicedintheidenticalmannerasthedischargevalves.Note:Dischargevalvesmustberemovedpriortoanyremovalof
thesuctionvalves.
ServiceProcedureforKZ‐3150Valves
iii. DISCHARGEVALVES:Thedischargevalveandseatcanbeexposedbyfirstremovingthedischargevalvecoverplate.Oncethe
dischargecovercaphasbeenremovedyoumayliftoutthedischargevalvespring,dischargevalveandvalveseat.Oncethevalveand
seathavebeenremovedtheyshouldbereplacedifbadlyworn.Toreplacedischargevalve,firstcleanandinspecttheseatborefor
washoutdefectsandthendroptheseatintothebore.Replacevalveinseatthenvalvespringandcovercap,always‐inspectingo’ring
sealsbetweenseatsandcovercaps.
iv. SUCTIONVALVES:Thesuctionvalvesarelocatedinthechamberdirectlybelowthedischargevalveseat.Thesuctionvalvesare
servicedintheidenticalmannerasthedischargevalves.
B. DISCTYPEVALVES:Alldisc‐typevalvesareexposedforremovalinasimilarmannerasthewing‐guidedvalves.Insteadofremovingthevalve
body;theupperportionofthevalveisremovedbyremovalofthevalvecapscrew,springretainer,valvespring,andvalvespacersleeve.The
valveseatisthen“pulled”fromthefluid‐endutilizinganauthorizedKerrValvePuller.Note:InallKerrPumpswithdisc‐typevalvesthe
dischargeandsuctionvalvesareidentical.
C. BALLANDSEATVALVES:Inpumpswithblock/billettypefluid‐endsthevalvesareballandseatdesign.Theseareexposedfor
removal/inspectionbyremovaloftheappropriatevalvecover.Theflatseatsarekeptinplacebyascrew‐invalveretainerthatcanbebest
removedwithaKerrValveWrenchmadefortheappropriatepump.Springsarenormallyincorporatedwiththedischargevalveswhilethe
suctionvalvesoperatewitha“freeball”.Acopperwasher/gasketisusedunderallvalveseatsforaseal.Wheninstallingorremovingaflat
typevalveseatagood“rap”ontopofthevalvewrenchwill“seat/unseat”theseatandcoppergasketpriorfinaltighteningorremoval.
Failureto“seat”thevalveseatinthismannercanresultinthe“washingout”ofthefluid‐end.Forpressurizedsuction,valveswillneedtobe
springloaded.CallKerrPumpsforthischange.
D. PLUNGERS:Followingtheremovalofthesuctionvalve,theplungermayberemovedbybreakingtheunionbetweentheplungerandpony
rodandforcingtheplungeroutthebackofthefluid‐end.Looseningthepackingnut/glandwillfacilitatetheremovaloftheplunger.The
reverseofthisprocedureisusedtoinstallaplunger.Lubricationandsomeslightforcemaybeusedtopassplungerthroughthepacking.

KERR KP-3300B Specifications

General

Brand	KERR
Model	KP-3300B
Category	Water Pump
Language	English