Watts LFFBVS-4B User Manual

For Residential and Commercial Applications

ES-LFFBV-4B

Job Name

Job Location

Engineer

Approval

LEAD FREE

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*

Series LFFBV-4B,
LFFBVS-4B

2-Piece, Full Port,
Brass Ball Valves

Sizes: 1⁄4" – 3"

Series LFFBV-4B, LFFBVS-4B 2-Piece, Full Port, Brass Ball
Valves are suitable for a full range of liquids and gases in resi­dential and commercial applications.

These valves feature an adjustable packing for longer service
life, a bottom loaded blow-out proof stem for safety, a fluoro­carbon elastomer stem O-ring to prevent stem leaking at instal­lation, and are rated to 600psi WOG/150psi WSP

1

⁄4"– 3".

Contractor

Approval

Contractor’s P.O. No.

Representative

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LFFBV-4B

Approvals

¼" – 3" FBV-4
½" – 3" FBVS-4
Certified to NSF/ANSI Standard 61/8

LFFBVS-4B

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Features

• CSA approved threaded valves only ¼" – 3"

• Certified to NSF/ANSI Standard 61/8

• Metal-to-metal adapter body seal to eliminate adapter leaks

after soldering

• Adjustable stem packing gland provides longer service life

• Bottom loaded blowout proof stem

• PTFE stem packing seal and seats

• Machined chrome plated Lead Free brass ball for sizes ¼" ­1" and stainless steel for sizes 1¼" - 3"

• Complies with MSS-SP-110

Models

LFFBV-4B 1⁄4" – 3" threaded end connections
LFFBVS-4B

1

⁄2" – 3" solder end connections*

Specifications

Approved valves shall be 2-piece full port design constructed

of a forged Lead Free brass body and end adapter. Seats

and stem packing shall be PTFE. Stem to be bottom-loaded,

blowout proof design with a fluorocarbon elastomer O-ring to
prevent stem leakage. Valves required to have an adjustable
packing gland and
ball and stainless steel for 1

shall be CSA approved to ½ psig and 5 psig and certified to
NSF/ANSI Standard 61/8. Solder valves also required to be
certified to NSF/ANSI Standard 61/8. Valve sizes ¼" – 2" pres­sure rated to 600 psi WOG and 150 psi WSP. Sizes 2

pressure rated to 400 psi WOG and 125psi WSP. Valves speci­fied are Watts Series LFFBV-4B or LFFBVS-4B.

1

/2" - 1" chromed plated Lead Free brass

1

/4" - 3". Threaded valves ¼" – 2"

1

/2" - 3"

Gas Approvals (Threaded Valves Only)

¼" – 2"
CSA
½ psig, 5 psig

@ -40°F to 125°F

Pressure — Temperature

Temperature Range: -40ºF to 400ºF (-40ºC to 204ºC)

Pressure Rating:

2
400psi (27) WOG non-shock
125psi WSP

1

⁄4"– 3"

600psi (41.4 bar) WOG non-shock
150psi (10.3 bar) WSP

1

⁄2"– 3"

Installation Information

Apply heat with the flame directed AWAY from the center of the
valve body. Excessive heat can harm the seats. After soldering,

the packing nut may have to be tightened.

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This valve is designed to be soft soldered into lines without dis­assembly, using a low temperature solder to 420°F (216°C). Higher
temperature solders may damage the seat material.

*The wetted surface of this product contacted by consumable
water contains less than 0.25% of lead by weight.

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

Materials

A

A

B

B

C

C

D

D

E

E

G

G

H

H

I

I

J

J

K

K

J

J

L

L

A. Handle Nut Zinc plated carbon steel
B. Handle Assembly Zinc plated carbon steel

C. Packing Nut Brass
D. Stem Packing Virgin PTFE
E. O-Ring EPDM
G. Stem Lead Free brass
H. Tag Cardboard, Mylar coated both

I. Body Forged Lead Free brass
J. Seats Virgin PTFE
K. Ball Lead Free brass (¼" - 1")

Stainless steel (1¼" - 3")

L. Adaptor Forged brass

with vinyl insulator

sides

Dimensions-Weights

H

C

I

L

SIZE C H I L L1

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

1

⁄4 113⁄16 46 37⁄16 87 7⁄16 11 13⁄4 45 — —

3

⁄8 113⁄16 46 37⁄16 87 1⁄2 13 13⁄4 45 — —

1

⁄2 13⁄8 36 3 78 1⁄2 13 2 52 17⁄8 50

3

⁄4 11⁄2 39 41⁄8 105 11⁄16 18 25⁄16 59 113⁄16 69

1 1

1

1

⁄4 17⁄8 50 415⁄16 125 13⁄16 30.5 33⁄16 80 35⁄16 92

1

1

⁄2 21⁄2 63 415⁄16 125 13⁄8 37 31⁄2 89 45⁄16 109

2 2

1

2

⁄2 45⁄8 118 93⁄8 240 25⁄8 67 55⁄8 141 61⁄2 164

3 5 128 9

LFFBV-4B

13

⁄16 45 43⁄16 105 15⁄16 24 213⁄16 71 33⁄16 83

11

⁄16 68 7 180 17⁄8 49.5 43⁄16 107 55⁄16 136

I

L1

3

⁄8 240 31⁄8 79.5 63⁄8 162 71⁄2 191

H

C

LFFBVS-4B

A Watts Water Technologies Company

USA: Tel. [phone] • Fax: [phone] • www.watts.com

Canada: Tel. [phone] • Fax: [phone] • www.watts.ca

ES-LFFBV-4B 1414 © 2014 Watts