Manual

IS-150A
Installation Instructions
Series LF150A/LF150-HA
Water Hammer Arrestor
Installation Instructions
• Installascloseaspossibletosourceofshock.
• Avoiddamagingarrestorbyusinghexflatstotighten.
• Unitisfactorypre-chargedto30psi(207kPa).Ifsystempressureis
higherthan35psi(241kPa),addairuntilthevalveis5psi(34kPa)
belowthesystemflowpressure.
• UseLF150HAhoseadapterforhoseapplicationssuchasdirect
mountingtoWattsModel2,Duo-Clozwashingmachineshutoffvalve.
• Maximumworkingpressure150psi(10.3kPa).
LF150A
LF150A
LF150HA
4
13
⁄32
4
5
⁄16
1
1
⁄4
2
1
⁄4
How It Operates
Dimensions
1.Whenwaterinthe
houseisnotbeing
used,theLF150Ais
initsnormalstate,
wheretheaircharge
andwaterpressure
donotflexthe
diaphragm.
2.Whenthewateris
beingused,the
LF150Aisstillin
balanceofair
pressureandwater
pressure,the
diaphragmdoes
notflex.
3.Whenwaterisquickly
shutoff,thesud-
denhaltcausesthe
waterpressureto
soarandtheshock
isabsorbedbythe
diaphragm.
 Followedbyasud-
dendrop,which
alsoactsonthe
diaphragm,flexingit
silentlytohandlethe
pressurechanges.
4.Secondsafterthe
shock,thediaphragm
isbackinitsnormal
stage.
Annualinspectionofallwatersystemsafetyandcontrolvalvesis
requiredandnecessary.Regularinspection,testingandcleaning
assuresmaximumlifeandproperproductfunction.
Quick-Closing Faucets
Model LF150A
Model LF150A
Watts Model 2
Model LF150A-HA
WARNING
!
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information can result in death,
serious personal injury, property damage, or damage to the equipment.
Keep this Manual for future reference.
Clothes and Dishwashers
NOTICE