Overview of Primary Product

ManualsBrandsZurn ManualsBackflow Preventers#1 Check Assembly for 375A & 375 (2-1/2" to 4")

a company

DOCUMENT #: REVISION:

BF-375A 11/12

SPECIFICATION SUBMITTAL SHEET

(Patent No. 5,913,331)

Page 1 of 2

Model 375A

Reduced Pressure Principle Assembly

FEATURES

Sizes:  2 1/2"*  3"*  4"  6"  8"  10"

Maximum working water pressure 175 PSI

Maximum working water temperature 140°F

Hydrostatic test pressure 350 PSI

End connections (Grooved for steel pipe) AWWA C606

(Flanged) ANSI B16.1

Class 125

*2 1/2 & 3" sizes use 4" body & reducer couplings

OPTIONS (Sufxes can be combined)

 - with anged end NRS gate valves (standard)

 FSC - with epoxy coated wye type strainer (anged only)

 G - with grooved end NRS gate valves

 GF - with grooved inlet gate connection and anged

outlet gate connection

 FG - with anged inlet gate connection and grooved

outlet gate connection

 L - less shut-off valves (grooved body connections)

 MS - with Integral Relief Valve Monitor Switch

 OSY - with anged end OS&Y gate valves

 OSYG - with grooved end OS&Y gate valves

 BGVIC - with grooved end buttery valves

with integral

supervisory switches

ACCESSORIES

 Repair kit (rubber only)

 Thermal expansion tank (Model XT)

 OS & Y Gate valve tamper switch (OSY-40)

 Air gap (Model AG)

 Electronic Solenoid Timer (Model EST)

 QT-SET Quick Test Fitting Set

 Test Cock Lock (Model TCL24)

DIMENSIONS & WEIGHTS (do not include pkg.)

APPLICATION

Designed for installation on potable water lines to protect

against both backsiphonage and backpressure of contami-

nated water into the potable water supply. The Model 375A

provides protection where a potential health hazard exists.

Ideal for use where lead-free* valves are required.

STANDARDS COMPLIANCE

 ASSE® Listed 1013

 AWWA Compliant C511 (with gates only), and C550

 IAPMO® Listed

 CSA® Certied

 UL® Classied

 C-UL® Classied

 FM® Approved

 Approved by the Foundation for Cross Connection

Control and Hydraulic Research at the University of

Southern California.

 NYC MEA 484-04-M

 NSF® Listed-Standard 61, Annex G*

*(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)

MATERIALS

Main valve body Ductile Iron ASTM A 536 Grade 4

Access covers Ductile Iron ASTM A 536 Grade 4

Coatings FDA Approved electrostatic epoxy nish

Internals Stainless Steel, 300 Series

NORYL™, NSF Listed

Fasteners & Springs Stainless Steel, 300 Series

Seal rings EPDM (FDA approved)

O-rings Buna Nitrile (FDA approved)

Sensing line Stainless Steel, braided hose

MODEL

375A with OSY

& FSC option

MODEL

375A with

BGVIC option

Attention: Model 375A (grooved body) and

Model 375 (ange body) have different

lay lengths.

(with BGVIC valves)

(with NRS gates)

Relief Valve

discharge port:

2 1/2" - 6" - 2.75 sq. in.

8" - 10" - 3.69 sq. in.

DIMENSION (approximate)

MODEL

375A

SIZE

WITH

BUTTERFLY

VALVES

LESS

GATE

VALVES

C D

OS&Y

OPEN

OS&Y

CLOSED

NRS GATE

WITH

BUTTERFLY

VALVES

F G H

in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm

2 1/2 65 35 1/8 892 32 1/8 816 20 1/8 511 4 1/2 114 7 1/4 184 16 3/8 416 13 7/8 352 11 3/8 289 8 203 11 279 45 1/4 1150 9 5/8 247

3 80 36 1/8 918 33 838 20 1/8 511 4 1/2 114 7 1/4 184 18 7/8 479 15 5/8 397 12 3/8 314 8 203 11 279 46 7/8 1191 9 5/8 247

4 100 38 1/4 972 33 1/4 845 19 7/8 505 4 1/2 114 8 203 22 3/4 578 18 1/4 464 14 3/4 375 9 1/8 232 11 279 53 3/8 1356 9 5/8 247

6 150 47 1/4 1200 40 1/4 1022 25 7/8 657 5 1/2 140 10 254 30 1/8 765 23 3/4 603 19 483 10 1/8 257 12 3/8 314 65 3/8 1661 13 330

8 200 62 1575 55 1397 38 1/2 978 10 254 11 279 37 3/4 959 29 1/4 743 22 1/2 572 11 15/16 303 15 3/8 391 86 3/8 2194 17 5/16 440

10 250 64 5/8 1641 58 1/2 1485 38 1/2 978 10 254 12 305 45 3/4 1162 35 3/8 899 26 1/2 673 13 5/16 338 15 3/8 391 94 3/8 2398 17 1/8 435

MODEL

375A

SIZE

WEIGHT

WITHOUT

GATES

WITH

NRS

GATES

(GXF)

WITH

OS&Y

GATES

(GXF)

WITH

NRS

GATES

(GXG)

WITH

OS&Y

GATES

(GXG)

WITH

BUTTERFLY

VALVES

(GXG)

in. mm lbs. kg lbs. kg lbs. kg lbs. kg lbs. kg lbs. kg

2 1/2 65 97 44 191 87 199 90 183 83 191 87 116 53

3 80 96 43.5 211 96 217 98 201 91 207 94 117 53

4 100 83 38 227 103 237 108 201 91 211 96 115 52

6 150 136 62 356 162 372 169 326 148 342 155 188 85

8 200 305 139 757 344 781 355 757 344 757 344 413 188

10 250 358 162 985 447 1043 473 863 391 921 418 530 241

Summary of content (2 pages)

PAGE 1
Model 375A ® a ® Reduced Pressure Principle Assembly company SPECIFICATION SUBMITTAL SHEET APPLICATION Designed for installation on potable water lines to protect against both backsiphonage and backpressure of contaminated water into the potable water supply. The Model 375A provides protection where a potential health hazard exists. Ideal for use where lead-free* valves are required.
PAGE 2
FLOW CHARACTERISTICS PRESSURE LOSS (PSIG) 0 6.3 FLOW RATES (l/s) 12.6 15 18.9 25.2 31.5 103 2 1/2" (65mm) 10 69 3" (80mm) 5 34 0 0 100 200 300 0 500 400 PRESSURE LOSS (kpa) MODEL 375A 2-1/2" - 3" (STANDARD AND METRIC) FLOW RATES (GPM) MODEL 375A 4" & 6" (STANDARD & METRIC) FLOW RATE (l/s) 25.2 50.5 75.7 100.9 103 PRESSURE LOSS (PSIG) 15 4" (100mm) 10 6" (150mm) 69 5 34 0 0 0 400 800 1200 FLOW RATE (GPM) PRESSURE LOSS (kpa) 0.