Submittal Sheet

ManualsBrandsWatts ManualsBackflow Preventers2" Lead Free Double Check Valve Assembly (LF007M1-QT)

For Non-Health Hazard Applications

ES-LF007

Job Name

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Contractor

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Job Location

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Approval

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Engineer

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Contractor’s P.O. No.

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Approval

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Representative

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IMPORTANT: INQUIRE WITH GOVERNING AUTHORITIES

FOR LOCAL INSTALLATION REQUIREMENTS

Now Available

WattsBox Insulated Enclosures.

For more information, send for literature ES-WB.

Series LF007

Double Check Valve Assemblies

Sizes:

⁄2" – 3" (15 – 80mm)

Series LF007 Double Check Valve Assemblies shall be installed

at referenced cross-connections to prevent the backflow of

polluted water into the potable water supply. Only those cross-

connections identified by local inspection authorities as non-

health hazard shall be allowed the use of an approved double

check valve assembly. The LF007 features Lead Free* con-

struction to comply with Lead Free* installation requirements.

Check with local authority having jurisdiction regarding vertical

orientation, frequency of testing or other installation requirements.

The valve shall meet the requirements of ASSE Std. 1015 and

AWWA Std. C510. Approved by the Foundation for Cross-

Connection Control and Hydraulic Research at the University

of Southern California.

Features

• Ease of maintenance — only one cover

• Top entry

• Replaceable seats and seat discs

• Modular construction

• Compact design

• Cast Lead Free* bronze body construction —

⁄2" – 2"

(15 – 50mm)

• Fused epoxy coated cast iron body — 2

⁄2" – 3" (65 – 80mm)

• Top mounted Lead Free* ball valve test cocks

• Low pressure drop

• No special tools required for servicing

•

⁄2" – 1" (15 – 25mm) have tee handles

Specifications

A Double Check Valve Assembly shall be installed at each

noted location. The assembly shall consist of two positive seat-

ing check modules with captured springs and rubber seat

discs. The check module seats and seat discs shall be

replaceable. Service of all internal components shall be through

a single access cover secured with stainless steel bolts. The

Double Check Valve Assemblies shall be constructed using

Lead Free* materials. Lead Free* Double Check Valve

Assemblies shall comply with state codes and standards,

where applicable, requiring reduced lead content. The assem-

bly shall also include two resilient seated isolation valves; four

top mounted, resilient seated test cocks. The assembly shall

meet the requirements of ASSE Std. 1015 and AWWA Std.

C510. Approved by the Foundation for Cross-Connection

Control and Hydraulic Research at the University of Southern

California. Assembly shall be a Watts Series LF007.

⁄4" (20mm) LF007M3QT

2" (50mm) LF007M1QT HC

Test Cocks

First Check

Module Assembly

The LF007 Series features a modular design concept which facilitates

complete maintenance and assembly by retaining the spring load.

Second Check

Module Assembly

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.

*The wetted surface of this product contacted by consumable

water contains less than one quarter of one percent (0.25%) of

lead by weight.

LEAD FREE

Summary of content (4 pages)

PAGE 1
ES-LF007 For Non-Health Hazard Applications Job Name ––––––––––––––––––––––––––––––––––––––––––– Contractor –––––––––––––––––––––––––––––––––––––––––––– Job Location ––––––––––––––––––––––––––––––––––––––––– Approval Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No.
PAGE 2
Pressure — Temperature Suffix: 12 S - bronze strainer ⁄ " – 2" (15 – 50mm) Temperature Range: 33°F – 180°F (0.5°C – 82°C). LF - without shutoff valves Maximum Working Pressure: 175psi (12.1 bar). LH - locking handle ball valves (open position) 21⁄2" – 3" (65 – 80mm) SH - stainless steel ball valve handles Temperature Range: 33˚F – 110°F (0.5˚C – 43°C) continuous, 140°F (60°C) intermittent. HC - 21⁄2" inlet/outlet fire hydrant fittings (2" valve) Maximum Working Pressure: 175psi (12.1 bar).
PAGE 3
Dimensions – Weights Sizes: 21⁄2" – 3" (65 – 80mm) C (open) 9" (229mm) 45⁄16" (109mm) N E1 R E M A Strainer Dimensions MODEL SIZE (DN) DIMENSIONS A C WEIGHT E, E1 SIZE R in. mm in. mm in. mm in. mm in. mm lbs. kgs.
PAGE 4
Capacity As complied from documented Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California lab tests. * Typical maximum system flow rate (7.5 feet/sec., 2.3 meters/sec.) ** UL rated flow 12 11⁄2" (40mm) bars psi .8 12 .7 10 .5 8 .4 6 .3 4 .1 2 0 0 * 0 0 2 7.6 4 15.2 5 1.5 Pressure Drop Pressure Drop ⁄ " (15mm) 6 22.8 8 30.4 7.5 2.5 10 38 * bars psi .8 12 .7 10 .5 8 .4 6 .3 4 .1 2 0 0 0 0 12 gpm 45.6 lpm fps mps 10 3.