Watts LFB6801 User Manual download pdf

Installation

I. Threaded-end (LFB6800):

1. The above listed standard valves are bidirectional and as

such, can be installed for ﬂow in either direction.

2. When installing threaded-end valves, be sure that the

threads on the mating pipe are free from excessive grit, dirt

or burrs. Take care to assure that any pipe sealants used

are not so excessively applied to the pipe threads that the

valve cavity becomes fouled.

II. Sweat-end (LFB6801): To protect seats and seals from high

temperatures encountered while soldering, these valves must

be disassembled prior to soldering.

LFB6801 Series

1. Remove body center section from adapters by removing

one body bolt and loosening others.

2. Solder end adapters onto copper tubing system, orienting

adapters to required valve position. One of the two adapter/

tubing assemblies must allow rotation to match alternate

adapter bolt pattern.

3. After soldering and cool-down, install body assembly using

new body seals provided and re-torque bolts as follows:

(Use sequence shown on back page).

Valve Operation

1. All series Watts ball valves feature

⁄

turn operation. Turning

the valve handle 90° clockwise will fully close the valve while

a 90° counterclockwise rotation will fully open the valve. The

valve handle also serves as a ball oriﬁce position indicator.

When the valve handle is parallel to the pipe, the valve is open,

when perpendicular to the pipe, the valve is closed.

2. All series Watts ball valves are designed to provide optimum

bubble-tight performance when properly selected in accor-

dance with the valve’s pressure/temperature rating, unless

otherwise noted in seat material selection chart.

3. To provide the longest possible service-life, a hand-operated

ball valve should be operated in either it’s fully open or fully

closed position. If an intermediate operating position is to be

utilized, consult your Watts agent. Excessive pressure drops

could adversely affect service life of the valve.

4. All Watts valves are factory assembled using an F.D.A. ap-

proved lubricant. Valves can be ordered from the factory

without lubricant. The standard factory lubricant can be

removed, if objectionable, by disassembling the valve and

solvent washing.

5. The below listed torques are the normal expected maximum

break-away torques. These values represent the force re-

quired to begin to open the valve. Typically, this break-away

value is the maximum torque requirement of the valve during a

closed to open, opened to closed cycle. Bear in mind that these

values have been conﬁrmed by laboratory testing of each valve

while pressurized with water to the valve’s maximum pressure

rating. Certain highly viscous or abrasive services could cause

an increase in torque requirements.

Maintenance

During it’s service life, the only maintenance that may be required

by your Watts ball valve should be periodic stem seal adjust-

ment. If leakage at the stem is noted, simply tighten the valve

stem gland nut until leakage subsides. It is impractical to predict

frequency of stem adjustment as it is inﬂuenced by such factors

as frequency of cycling and service media.

As is the case with any valve on the market today, it is important

that stem leaks do not go unattended. Lack of maintenance of

stem leakage could cause a premature need to replace stem

seals.

If operating temperature of system is substantially lower or

higher than 80°F (27°C), initial stem packing adjustment may be

required to prevent leakage.

Valve Size Body Bolt Torque (in.-lbs.)

⁄

" 30 ± 5

⁄

" 100

1" 200

⁄

" 200

⁄

" 300

2" 400

TABLE 1

Series LFB6800

IS-B6800

Series LFB6800

Installation, Operation and Repair Manual

WARNING

Read this Manual BEFORE using this equipment.

Failure to read and follow all safety and use information

can result in death, serious personal injury, property

damage, or damage to the equipment.

Keep this Manual for future reference.

NOTICE

IMPORTANT

1 2

Summary of Contents

Page 1 - Series LFB6800

InstallationI. Threaded-end (LFB6800): 1. The above listed standard valves are bidirectional and as such, can be installed for ﬂow in either direct

Page 2 - Packing Nut Torques

RebuildingMost standard bidirectional ball valves available on the market to-day, regardless of manufacturer, can trap ﬂuids in the valve cavity when

Related models: LFB6800

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Watts LFB6801 User Manual

Browse online or download User Manual for Accessories for water Watts LFB6801. Watts LFB6801 User Manual

Summary of Contents

Related models: LFB6800

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