model 375vsr pre-set series...zurn industries, llc | wilkins 1747 commerce way, paso robles, ca...

a company

®

®

Zurn Industries, LLC | Wilkins1747 Commerce Way, Paso Robles, CA U.S.A. 93446 � Ph. 855-663-9876, Fax 805-238-5766

In Canada | Zurn Industries Limited3544 Nashua Drive, Mississauga, Ontario L4V 1L2 � Ph. 905-405-8272, Fax 905-405-1292

www.zurn.com

Rev. BDate: 12/13Document No. BF-375VSR (PRESET)Patent No. 6,513,543, 7,784,483, & 7,905,250Product No. Model 375VSR

Model 375VSR PRE-SET SERIES

Pre-Plumbed Back! ow Station

of 7

MODEL 375VSR

Application

Assembly includes a Model 375 reduced pressure principle

backflow preventer with a Model SXL strainer on the inlet

and a Model NR3 pressure reducing valve on the outlet.

The Pre-Set assembly is available in 1/2" - 2" sizes.

Standards Compliance 375 (3/4" - 2")• ASSE® Listed 1013

• IAPMO® Listed

• CSA® B64.4

• AWWA compliant C511

• �Approved by the Foundation for Cross Connection

Control and Hydraulic Research at the University of

Southern California

Standards Compliance NR3 • ASSE® Listed 1003

• IAPMO® Listed

• CSA® Certified

FeaturesSizes: � 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"

Maximum working water pressure 175 PSI

Maximum working water temperature 180°F

Hydrostatic test pressure 350 PSI

End connections Threaded FNPT ANSI B1.20.1

For more details on each component refer to the

following:

Model Pages

375 2 & 3

NR3 4 & 5

SXL 6 & 7

� � �� ! � " �� # $ � � � # $ � � � # $ � � � # $ � � � # $ � � � # $ � � � # $ � � % & ' $ ( )* + , , - * - . + / , . 0 * * 1 + * 0 2 3 * 1 + / 2 * , * 1 + * 0 . 1 . * + 2 * / 4 * , 4 + / 4 * 0 4 . 0 3 2 $ ,4 + 2 , - * * , . 3 * * 1 + * 0 2 3 * 1 + / 2 * , * 1 + * 0 . 1 . 3 + * 0 * 3 , * , 4 + 2 4 , 1 4 . 0 * - 2 $ 1* , 1 * 4 4 + 2 4 2 3 , * + 2 1 . , * + 2 1 . 4 . + * 0 / . / * + / , - 0 * 1 4 + 2 2 - * 2 * - , * 1 0 $ .* 5 * + 2 4 , * / 2 1 . 4 4 + / / 0 4 4 + / / 0 4 4 + 2 3 1 3 1 + / , 2 2 , - * + , 1 , - 4 4 + 2 3 1 , 3 * 4 $ ** 5 * + , 2 - * / 4 + 2 2 . 0 4 4 + / / 0 4 4 + / / 0 4 4 + 2 3 1 * - 4 + 2 , . 2 , * 1 + / 1 1 - 2 * + , * * 2 4 * * 2, 1 - , - 4 + 2 1 , . 4 4 + / / 0 4 4 + / / 0 4 4 + 2 3 1 * , 1 + * 0 4 * 4 , 2 * + / 0 * , 2 4 + 2 * , * 4 / * . $ 2Dimensions & Weights (do not include pkg.)

F

A

E E

D

G

C

B

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www.zurn.com

Rev. CDate: 12/13Document No. BF-375(SM)Patent No. 6,513,543, 7,784,483, & 7,905,250Product No. Model 375(SM)

Model 375

Reduced Pressure Principle Assembly

of 7

Options(Suffixes can be combined)

c - with full port QT ball valves (standard)

c L - less ball valves, male pipe thread

c S - with bronze "Y" type strainer

c SH - with stainless steel handles

c SE - with street elbows

c FT - with integral male 45° flare SAE test fitting

c AG - with air gap

c SAG - with bronze "Y" strainer and air gap

c BOF - with Blow out/Flush fitting

c B - with black fusion epoxy coated ball valves &

struts for theft protection

Accessoriesc Repair kits

c Thermal expansion tank (Mdl. XT)

c Soft seated check valve (Mdl. 40XL2)

c �Shock arrester (Model 1250XL)

c QT-SET Quick Test Fitting Set

c Blow out / Flush fitting (RK34-375BOF (1/2" or 3/4"),

RK1-375BOF or RK114-350-375BOF)

ApplicationDesigned for installation on water lines to protect against both

backsiphonage and backpressure of contaminated water into

the potable water supply. Assembly shall provide protection

where a potential health hazard exists.

Standards Compliance • ASSE® Listed 1013

• IAPMO® Listed

• CSA® B64.4

• AWWA compliant C511

• �Approved by the Foundation for Cross Connection

Control and Hydraulic Research at the University of

Southern California

• UL® Classified (less shut-off valves only, 3/4" - 2")

• �C-UL® Classified (less shut-off valves only, 3/4" - 2")

MaterialsHousing Reinforced Nylon, FDA approved

Fasteners Stainless Steel, 300 Series

Elastomers Silicone (FDA Approved)

Buna Nitrile (FDA Approved)

Internals Delrin, Nylon, NSF Listed

Springs Stainless steel, 300 series

Ball Valves Cast Bronze, ASTM B 584

Struts Forged Brass, ASTM B 124

FeaturesSizes: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"

Maximum working water pressure 175 PSI

Maximum working water temperature 180°F

Hydrostatic test pressure 350 PSI

End connections Threaded FNPT ANSI B1.20.1

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C B

D

E

AFF

AB

G

D

E

C

G( 1/2” - 1” ) ( 1-1/4” - 2” )

OPTIONAL STRAINER (MODEL SXL)

JG

HH

J

Dimensions & Weights (do not include pkg.)

MODELS 375SE

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Typical InstallationLocal codes shall govern installation requirements. To be

installed in accordance with the manufacturers’ instructions

and the latest edition of the Uniform Plumbing Code. Un-

less otherwise specified, the assembly shall be mounted at

a minimum of 12” (305mm) and a maximum of 30” (762mm)

above adequate drains with sufficient side clearance for

testing and maintenance. The installation shall be made

so that no part of the unit can be submerged.

OUTDOOR INSTALLATIONINDOOR INSTALLATION

Speci! cationsThe Reduced Pressure Principle Backflow Preventer shall be ASSE® Listed 1013, rated to 180°F and supplied with

full port ball valves. The main body shall be Nylon and the seat disc elastomers shall be silicone. If installed indoors,

the installation shall be supplied with an air gap adapter. The Reduced Pressure Principle Backflow Preventer shall be

a ZURN WILKINS Model 375.

INLET SHUT OFF

DIRECTION OF FLOW

30" MAX.12" MIN.

PROTECTIVE

ENCLOSURE

AIR GAPOPTIONAL

WATER METER

175 PSIG 180ß F

3/4" 375 RP

ZURN WILKINS

FLOOR

DRAIN

MODEL 375SAG

(SHOWN)

OPTIONAL STRAINER

(MODEL SXL)

W

ILKIN

S

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12" MIN.

FLOOR DRAIN

175 PSIG 180° F

ZURN / WILKINS

375 RPB64.4

1013

DIRECTION OF FLOW

2

(1/2” - 1”) 5 1/2

(1-1/4” - 2”) 8 1/8

(1/2” - 1”) 2” PIPE

(1-1/4” - 2”) 3” PIPE

(DRAIN LINE CAN

BE ANY STANDARD

PIPING MATERIAL)

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Rev. ADate: 4/13Document No. REG-NR3Product No. Model NR3

Model NR3Water Pressure Reducing Valve with Integral By-pass Check Valve and Strainer

of 7

ApplicationDesigned for installation on water lines to reduce high inlet

pressure to a lower outlet pressure. The integral strainer

makes this device most suitable for residential and commer-

cial water systems that require frequent cleaning of sedi-

ment and debris. The direct acting integral by-pass design

prevents buildup of excessive system pressure caused by

thermal expansion. The balance piston design enables the

regulator to react in a smooth and responsive manner to

changes in system flow demand, while at the same time,

providing protection from inlet pressure changes.

Standards Compliance• �ASSE® Listed 1003

• IAPMO® Listed

• CSA® Certified

MaterialsMain valve body Cast bronze ASTM B 584

Bell housing UV resistant polymer composite

Internals Stainless steel, 300 Series

Stem Brass ASTM B 16

Elastomers EPDM (FDA approved)

Buna nitrile (FDA approved)

Cartridge Delrin™ (NSF Listed)

Springs Oil temp wire, ASTM A 229

Strainer screen 300 Series Stainless Steel

FeaturesSizes: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"

Max. working water pressure (1/2” - 1-1/4”) 400 psi

Max. working water pressure (1-1/2” - 2”) 300 psi

Minimum inlet pressure = 80 psi as per UPC Code

Max. working water temperature 140°F

Reduced pressure range (1/2” - 1-1/4”) 15 to 75 psi

Reduced pressure range (1-1/2” - 2”) 25 to 75 psi

Factory preset 50 psi

Threaded connections (FNPT) ANSI B1.20.1

Copper connections (FC) ANSI B16.22

CPVC tailpiece: Max.hot water temp. 140°F @ 100 psi

Cold water rated temp. 73.4°F @ 400 psi

Dimensions & Weights (do not include pkg.)

A

B

D

C

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Options (Suffixes can be combined)

�c - standard with single union FNPT connection and 20 mesh strainer screen

�c C - with FC (copper sweat) union connection

�c DU - with double union connection (FNPT)

�c DM - with double male 3/4" & 1" meter threads connection

�c DMSS - DM with SS spring & sealed cage

�c G - tapped with gauge

�c LU - with integral FNPT connection (no union)

�c PEX - with male barbed connection tailpiece for crossed-linked polyethylene tubing

�c SC - with ss adjustment bolt and lock nut, with ss spring for below-ground installations

�c P - tapped and plugged for gauge

�c CPVC - CPVC tailpiece connection (1”)

�c HRSC - High Range 15-150 psi (1/2"-1-1/4" only) with sealed cage

Accessoriesc Repair kit

c 1" BR4DUSPC Special plastic spacer nipple

c 1-1/4" BR4DUSPC Steel pipe

c 1-1/2" NR3DUSPC Steel pipe

c 2" NR3DUSPC Steel pipe

c TPK Tailpiece kit

Flow Characteristics



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MODEL 975XL

BACKFLOW

PREVENTER

WATER

METER

HOSE BIBB

MODEL NR3

REGULATOR

SHUT-OFFMODEL WXTP

EXPANSION

TANK

WATER

HEATER

MODEL TP1100A

T & P VALVE

DIRECTION OF FLOW

MODEL BFP-8

HOSE BIBB VACUUM

BREAKER

MODEL YB

STRAINER

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Typical InstallationLocal codes shall govern installation requirements. Un-

less otherwise specified, the assembly shall be mounted in

accordance with the latest edition of the Uniform Plumbing

Code. The Model NR3 may be installed in any position. If

installed in a pit, vault, or indoors, specify the “SC” sealed

cage option. The assembly shall be installed with sufficient

side clearance for testing and maintenance. Multiple instal-

lations are recommended for wide demand variations or

where the desired pressure reduction is more than 4 to 1 (ie:

200 psi inlet reduced to 50 psi outlet). Caution: Anytime a

reducing valve is adjusted, a pressure gauge must be used

downstream to verify correct pressure setting. Do not bottom

adjustment bolt on bell housing.

Speci! cationsThe Water Pressure Reducing Valve shall be ASSE® Listed 1003, and available with single union, double union and less union

end connections. The main body shall be cast bronze (ASTM B 584) alloy. The bell shall be composite plastic. The cartridge shall

be acetal and incorporate an integral seat. The seat disc elastomer shall be EPDM. The assembly shall be accessible for mainte-

nance without removing the device from the line. The Water Pressure Reducing Valve shall be a ZURN WILKINS Model NR3.

Outdoor Installation

Typical InstallationNR3 Pex Installation

DIRECTION OF FLOW

WATER

METER

SHUT-OFF

VALVE

MODEL

NR3G

HOSE BIBB

TAILPIECE

UNION NUT

TYP. STUD BAY OR

EXPOSED WALL

CRIMP RING

DIRECTION OF FLOW

SUPPORT

UNION

GASKET

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"Flow curves are based on a

50 psi pressure differential"



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Rev. ADate: 5/13Document No. STR-SXLProduct No. Model SXL

Model SXL

Cast Bronze "Y" Type Strainer

of 7

ApplicationIdeal for use where Lead-Free* fittings are required.

Recommended for a variety of water service lines in-

cluding residential and commercial irrigation, swimming

pools and cooling tower water. They are also designed

to protect delicate equipment such as regulators and

backflow preventers by filtering sediment which could

cause premature failure.

Standards Compliance• NSF® Listed - Standard 61, Annex G*

• Certified to NSF/ANSI 372* by IAPMO R&T

*(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

MaterialsMain valve body Low Lead Cast Bronze ASTM B 584

Access covers Low Lead Bronze ASTM B 584

Screens 20 Mesh Stainless Steel, 300 Series

Features

Sizes: 1/2", 3/4", 1", 1 1/4, 1 1/2", 2"

2 1/2", 3"

Temperature/pressure rating 180°F

300 psi WOG

Threaded connections (FNPT) ANSI B1.20.1

(Supplied with brass closure plug)

Dimensions & Weights (do not include pkg.)� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� ! � " #$ % & $ ' ( $ % ) * ( ( + , ( % * � $ - � '( % ) & - ( + % * . * ( $ % & * . ( % * � $ $ % ) - � ,$ & ' ) $ % & $ $ ) ) $ - & $ % & � $ ( % ) - � *$ $ % ) ( & ' ' % $ , $ ( ' ) ( % ) $ & $ $ % & � & ( % ) $ � &$ $ % & ) - , ' % $ , $ , - ' $ & + $ % & � ( $ % & $ � ,& ' - + $ % & $ . $ , $ ' & $ % & � , & � +& $ % & , ' . & & . + $ % & $ . $ $ % & � . $ % ) ) � &( * - $ - & ' ) * $ % & & $ , $ % & � $ ) , � )� � � � � � � � � � � � � / � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� ! � " #( % ) & - ( $ ' % $ , $ - - ( ' % $ , * ) ( % * � $ - � '$ & ' ' $ & + ( $ ' % $ , $ - - $ % & � $ � ' - � +

A

B

C

WIL

KIN

S

XL

Optionsc C - with copper sweat connections (3/4" & 1")

Flow Characteristics



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PR

ES

SU

RE

LO

SS

(P

SIG

)

0

5

10

FLOW RATES (l/s)

MODEL SXL 1 1/2" thru 3" (STANDARD & METRIC)

0 100 200 300 400 500

6.3 12.6 18.9 25.2 31.569

PR

ES

SU

RE

LO

SS

(kpa)

35

FLOW RATES (GPM)

1 1/2" (40mm) 2" (50mm) 3" (80mm)

PR

ES

SU

RE

LO

SS

(P

SIG

)

0

5

10

FLOW RATES (l/s)

MODEL SXL 1/2" thru 1 1/4" (STANDARD & METRIC)

0 30 60 90 120 150

1.89 3.79 5.68 7.57 9.4669

PR

ES

SU

RE

LO

SS

(kpa)

35

FLOW RATES (GPM)

1/2" (15mm) 1" (25mm) 1 1/4" (32mm)3/4" (20mm)

2 1/2" (65mm)

Typical InstallationLocal codes shall govern installation requirements. Un-

less otherwise specified, the assembly shall be mounted

in accordance with the latest edition of the Uniform

Plumbing Code. If installed below grade, be certain

adequate drainage is provided to prevent the device

from being submerged. Horizontal installation with the

strainer cap facing downward is the preferred installation

orientation; however the strainer will provide protection

in any orientation.

OUTDOOR INSTALLATION OUTDOOR INSTALLATION

Speci! cationsThe “Y” type strainer shall be a manufactured import certified to NSF/ANSI 372. The main body and cover shall be low lead

cast bronze (ASTM B 584), the strainer screen shall be 20 mesh 300 series stainless steel and accessible for maintenance

without removing the device from the line. The “Y” type strainer shall be a ZURN WILKINS Model SXL.

0 1 2 1 3 4 5 6 5 7 8 9 : 3 7 ; < 9 = ; > ? @ 4 2 ;@ 4 2 ; A 4 B ; C D 5 E A ; 3 F G C D 5 E A ; 3 H ? D 5 E A ; 3 H C D 5 E A ; 3H E I J H H K LH E > J K K L CL E I J L > M NH E K J C F N H >L E > J I H K H F K CH J H L K ? K F > ?H H E > J K L L C > F F ?H H E K L K > I M L N CK J C K F I H ? C H M FPROTECTIVE

ENCLOSURE

DIRECTION OF FLOW

12" MIN

30" MAX

MODEL 975XL2 REDUCED

PRESSURE BACKFLOW PREVENTER

WIL

KIN

S

XL

975XL2

WIL

KIN

S

ZURN

DIRECTION OF FLOW

12" MIN.

30" MAX.

PROTECTIVE

ENCLOSURE

MODEL 500XL WATER

PRESSURE REDUCING VALVE

WIL

KIN

S

XL

500XL

I

KI

N

S

W

L

model 375vsr pre-set series...zurn industries, llc | wilkins 1747 commerce way, paso robles, ca...

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