Watts LF150A User Manual download pdf

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

LF150HA

⁄32

⁄16

⁄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

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

1 2

Summary of Contents

Page 1 - Series LF150A/LF150-HA

IS-150AInstallation InstructionsSeries LF150A/LF150-HAWater Hammer ArrestorInstallation Instructions• Installascloseaspossibletosourceofshock

Page 2 - Selection Table

Molded Diaphragm with a thick rubber bead for long lasting resistance to wearSpecial Thermo-Plastic Coating to prevent rust1⁄2" NPT solid hex

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Watts LF150A User Manual

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