Watts LFB6781 User Manual download pdf

Series LFB6780,

LFB6781

2-Piece, Full Port,

Lead Free

Diverter Ball Valves

Sizes:

⁄4" – 2" (8 – 50mm)**

Series LFB6780, LFB6781 2-Piece, Full Port, Lead Free* Copper

Silicon Alloy Diverter Ball Valves are designed to divert liquids and

gases in commercial and industrial applications. The LFB6780,

LFB6781’s full port orifice ensures minimal pressure drop, while

PTFE seats and stainless steel ball provide lasting service. The

LFB6780, LFB6781 features Lead Free* construction to comply

with Lead Free* installation requirements.

Features

•Suitable for a full range of liquids and gases.

•Minimal pressure drop due to full size ports

•Blowout proof pressure retaining stem

• Pressure rated at 400psi (28 bars) WOG non-shock @ 100°F

(38°C); 125psi (8.6 bars) WSP

•Virgin PTFE stem packing seal and thrust bearing

•Vinyl insulator on heavy duty, zinc-plated carbon steel handles

•Low operating torque

•Adjustable stem packing gland

•Each valve factory tested

Models

LFB6780

/4" – 2" (8 – 50mm)** threaded NPT end connections

LFB6781

/2" – 1" (15 – 25mm)** solder end connections

Specifications

A 2-Piece full port Lead Free* diverter ball valve to be installed

as indicated on the plans. Lead Free* 2-Piece, Full Port, Copper

Silicon Alloy Diverter Ball Valves, shall be constructed using Lead

Free* materials. Lead Free valves shall comply with state codes

and standards, where applicable, requiring reduced lead content.

The valve must have a blowout proof pressure retaining stem,

stainless steel ball, PTFE seats, virgin PTFE stem packing seal and

adjustable packing. Pressure rating no less than 400psi (28 bars)

WOG non-shock, 125psi (8.6 bars) WSP. Valve shall be a Watts

Series LFB6780 (threaded) or LFB6781 (solder).

Pressure – Temperature

Temperature Range: 0°F - 350°F (-18°C – 177°C) @ 50psi (3.5 bars)

Maximum Working Pressure: 400psi (28 bars) WOG non-shock @

100°F (38°C); 125psi (8.6 bars) WSP

For Commercial and Industrial Applications

ES-LFB6780

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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LFB6780

LFB6781

0° Rotation 45° Rotation 90° Rotation

Options

Suffix

SH – Stainless steel handle & nut

***This valve is designed to be soft soldered into lines without

disassembly, using a low temperature solder 420°F (216°C). Other

solders such as 95/5 tin antimony 460°F (238°C) or 96/4 tin silver

420°F (216°C) can be used, however extreme caution must be

used to prevent seat damage. Higher temperature solders will

damage the seat material. ANSI B.16.18 states that the maximum

operating pressure of 50-50 solder connections is 200 psi (14

bars) at 100°F (38°C) and decreases with higher temperatures.

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.

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.

LEAD FREE

*The wetted surface of this product contacted by consumable

water contains less than 0.25% of lead by weight.

**Metric Dimensions are nominal pipe diameter. This product is

produced with NPT threaded or solder end connections.

1 2

Summary of Contents

Page 1 - LEAD FREE

Series LFB6780, LFB67812-Piece, Full Port, Lead Free* Diverter Ball ValvesSizes: 1⁄4" – 2" (8 – 50mm)**Series LFB6780, LFB6781 2-Piece, Ful

Page 2 - Dimensions — Weights

HCIJELSTValve Seat RatingPressureTemperaturePressure Drop vs. FlowValve Torque RatingMaterialsDimensions — WeightsPressure DropABCDHIHKJEGF A Handle

Related models: LFB6780

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Watts LFB6781 User Manual

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Summary of Contents

Related models: LFB6780

Comments to this Manuals

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