Watts U009 User Manual download pdf

ES-U009

Series U009

Reduced Pressure Zone Assemblies

Sizes:

⁄2" – 2" (15 – 50mm)

Series U009 Reduced Pressure Zone Assemblies are designed to

protect potable water supplies in accordance with national plumbing

codes and water authority requirements. The swivel feature in the

series allows for it to be used in a variety of installations, including the

prevention of health hazard cross-connections in piping systems or

for containment at the service line entrance.

This series features two in-line, independent check valves, captured

springs and replaceable check seats with an intermediate relief valve.

Its compact modular design facilitates easy maintenance and assem-

bly access. Sizes

⁄2"– 1" (15 – 25mm) shutoffs have tee handles.

Features

•Uniqueswivelunion

•Singleaccesscoverandmodularcheckconstruction

for ease of maintenance

•Topentry—allinternalsimmediatelyaccessible

•Capturedspringsforsafemaintenance

•Internalreliefvalveforreducedinstallationclearances

•Replaceableseatsforeconomicalrepair

•Bronzebodyconstructionfordurability

•Ballvalvetestcocks—screwdriverslotted

•Largebodypassagesprovideslowpressuredrop

•Compact,spacesavingdesign

•Nospecialtoolsrequiredforservicing

Specifications

A Reduced Pressure Zone Assembly shall be installed at each poten-

tial health hazard location to prevent backflow due to backsiphonage

and/or backpressure. The assembly shall consist of an internal pres-

sure differential relief valve located in a zone between two positive

seating check modules with captured springs and silicone seat discs.

Seats and seat discs shall be replaceable in both check modules

and the relief valve. There shall be no threads or screws in the water-

way exposed to line fluids. Service of all internal components shall be

through a single access cover secured with stainless steel bolts. The

assembly shall also include two resilient seated isolation valves, four

resilient seated test cocks and an air gap drain fitting. The assembly

shallmeettherequirementsof:USCManual8thEdition

†

;ASSEStd.

1013;AWWAStd.C511;CSAB64.4.ShallbeaWattsSeriesU009.

† Does not indicate approval status. Refer to Page 2 for approved

sizes & models.

Test Cock No. 3

Test Cock No. 4

R.P. Zone

Water Outlet

Test Cock

No. 2

First Check

Module

Assembly

Second

Check

Module

Assembly

Relief Valve Assembly

Ball Type

Test Cocks

Now Available

WattsBox Insulated Enclosures.

For more information, refer to literature ES-WB.

Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,

please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-

out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

For Health Hazard Applications

Unique Swivel Union

⁄2" U009M2AQT

JobName

–––––––––––––––––––––––––––––––––––––––––––

 Contractor

––––––––––––––––––––––––––––––––––––––––––––

JobLocation

–––––––––––––––––––––––––––––––––––––––––

Approval

–––––––––––––––––––––––––––––––––––––––––––––

Engineer

–––––––––––––––––––––––––––––––––––––––––––––

 Contractor’sP.O.No.

––––––––––––––––––––––––––––––––––

Approval

–––––––––––––––––––––––––––––––––––––––––––––

Representative

––––––––––––––––––––––––––––––––––––––––

1 2 3 4

Summary of Contents

Page 1 - Series U009

ES-U009Series U009Reduced Pressure Zone AssembliesSizes: 1⁄2" – 2" (15 – 50mm)Series U009 Reduced Pressure Zone Assemblies are designed to p

Page 2 - and 993 sizes

Available ModelsPrefix:U – union connectionsSuffix:QT – quarter-turn ball valvesS – bronze strainerLF – withoutshutoffvalvesAQT – 3⁄4"

Page 3 - Dimensions and Weights

Dimensions and WeightsU009QTmodel size (dn) dimensions Weight A B C in. mm in. mm in. mm in. mm lbs. kgs.U009QT 1⁄2 15 1213⁄16 326 45⁄8 1

Page 4

0 1 2 3 4 5 6 7 8 9 10 gpm0 3.8 7.6 11 15 19 23 27 30 34 38 lpm 7.5 fps 2.3 mpsCapacitiesPerformance as established by an independent testing labo

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Watts U009 User Manual

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