Watts LFN250 Uživatelský manuál stáhnout pdf

Instructions for Installing Series LF23B,

LF123LP, LFN250 and LFN250B

Water Pressure Reducing Valves

Install Valve in the line with arrow on valve body pointing in the

direction of ﬂow.

This valve should be installed where it is accessible with suf-

ﬁcient clearance for cleaning, service or adjustment. Install

the reducing valve, when possible, before the sill cock line as

shown in diagram. Before installing the reducing valve, ﬂush out

the line to remove loose dirt and scale which might damage

valve disc and seat.

Horizontal installation is recommended. However, valve can be

installed in a vertical position. Regulator must be installed in an

accessible location to facilitate servicing the regulator.

To readjust reduced pressures, loosen adjusting screw nut and

turn adjusting screw clockwise to raise reduced pressure and

counterclockwise to lower reduced pressure.

When reducing valve is used, it makes a closed system;

therefore, pressure relief protection must be provided on the

downstream side of the reducing valve to protect equipment.

CAUTION

Anytime a reducing valve is adjusted, the use of a pressure

gauge is recommended to verify correct pressure setting. Do

not bottom out adjusting screw or spring cage.

Servicing

This series is a new development for standard capacity domes-

tic water regulation service. It has special unitized construc-

tion which consists of the seat, disc and stem assembly, and

strainer screen all together in one unit for complete replacement

maintenance.

To clean or replace parts.

1. Remove spring cage and all parts above diaphragm.

2. Loosen and remove diaphragm lock nut, lock washer,

pressure plate, and diaphragm from valve stem.

3. Unscrew seat cylinder from body and remove entire assem-

bly. For diaphragm replacement only, see part number.

4. While disassembled open gate valve to flush out collected

sediment.

NOTICE

Cast iron body regulators (LFN250/LFN250B) are not intended

for buried or pit services.

Main Line Service

Cold Water Supply

Reducing Valve

To Sill Cock

From Street Main

Meter

Adjusting Screw

Adjusting Screw Nut

Spring Cage

SA135B116

Bypass

Assembly for

models “B”

Diaphragm

(Size 1⁄2" - 560CA20)

(Size 3⁄4", 1" - 23B20)

Diaphragm

Lock Nut and

Pressure Plate

Name Plate

Complete Replacement Assembly

See reverse side for ordering information

Stem

Seat Cylinder

Integral

Stainless Steel

Valve Seat

Disc

Strainer

Screen

IS-2323A

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.

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Shrnutí obsahu

Strany 1 - LF123LP, LFN250 and LFN250B

Instructions for Installing Series LF23B, LF123LP, LFN250 and LFN250BWater Pressure Reducing ValvesInstall Valve in the line with arrow on valve body

Strany 2 - Series LF23, LF123 and LFN250

StemSeat CylinderIntegralStainless Steel Valve SeatDiscStrainerScreenWatts Thermal Expansion “Bypass” model water pressure reducing valves not only co

Příbuzné modely LF123LP

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Procházejte online nebo si stáhněte Uživatelský manuál pro Relé Watts LFN250. Watts LFN250 User Manual Uživatelská příručka

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Příbuzné modely LF123LP

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