Watts LF223S User Manual download pdf

Series LF223, LF223S

High Capacity Water Pressure

Reducing Valves**

Sizes:

⁄2" – 2

⁄2" (15 – 65mm)

Series LF223 and LF223S High Capacity Water Pressure Reducing Valves

are designed to reduce incoming water pressure to a sensible level to

protect plumbing system components and reduce water consumption.

The LF223/LF223S features Lead Free* construction to comply with Lead

Free* installation requirements. This series is suitable for water supply

pressures up to 300psi (20.7 bar) and may be adjusted from 25 – 75psi

(172 – 517 kPa). The standard setting is 50psi (345 kPa). Series LF223

features an enlarged diaphragm, spring cage and seat orifice for high

capacity performance. Series LF223S has the same options as the

LF223, except it is furnished with a strainer. All parts are quickly and

easily serviceable without removing the valve from the line. The optional

bypass feature permits the flow of water back through the valve into the

main when pressures, due to thermal expansion on the outlet side of the

valve, exceed the pressure in the main supply.

Features

• Enlarged diaphragm, spring cage and seat orifice

for super capacity performance

• Lead Free* brass body construction (except 2

⁄2” (65mm) which is iron)

• Serviceable in line

• Series LF223S furnished with separate strainer

• Optional bypass feature controls thermal expansion pressure***

• Sealed spring cage on all models for accessible outdoor or pit instatllations.

Models

LF223 NPT threaded female inlet x NPT threaded female outlet

LF223-S

NPT threaded female inlet with strainer x NPT threaded female outlet

For 2

⁄2" – 3" (65 – 80mm) bronze threaded valves,

refer to literature ES-LFN223B.

For 3" (80mm) flanged connections, refer to literature ES-LFN223F.

For Commercial, Institutional and Industrial Applications

ES-LF223

Available with or without

separate strainer

Disc holder removable for replacement of

disc without dismantling the valve —

no special tools required.

Sensitive spring

and large dia-

phragm area for

accurate

pressure control

Lead Free*

brass body

construction

⁄2" – 2"

Replaceable

stainless seat

High temperature

resisting diaphragm

for hot or cold water.

Large stainless steel

perforated strainer screen.

Sealed spring cage

LF223S

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.

* *A water saving test program concluded that reducing the supply

pressure from 80-50psi (551-345 kPa) resulted in a water savings of

30%.

*** The bypass feature will not prevent the pressure relief valve from

opening on the hot water supply system with pressure above

150psi (10.3 bar).

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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NOTICE

Inquire with governing authorities for local installation

requirements

Specifications

A Lead Free Water Pressure Reducing Valve shall be installed on the

water service pipe near its entrance to the building where supply main

pressure exceeds 60psi (413 kPa) to reduce it to 50psi (345 kPa) or

lower. The water pressure reducing valve shall be constructed using Lead

Free* materials. Lead Free* regulators shall comply with state codes and

standards, where applicable, requiring reduced lead content. Sill cocks

and outside wall hydrants may be left on full main pressure at the option

of the owner. Provision shall be made to permit the bypass flow of water

back through the valve into the main when pressures, due to thermal

expansion on the outlet side of the valve, exceed the pressure in the

main supply. Pressure reducing valves with builtin bypass check valves

and strainer will be acceptable. Approved valves shall comply with ASSE

1003. Valve shall be a Watts Series LF223 or LF223S (with strainer).

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Series LF223, LF223S 1
LEAD FREE 1

Summary of Contents

Page 1 - LEAD FREE

Series LF223, LF223SHigh Capacity Water Pressure Reducing Valves**Sizes: 1⁄2" – 21⁄2" (15 – 65mm)Series LF223 and LF223S High Capacity Water

Page 2

MaterialsBody: 1⁄2" – 2" (15 – 50mm) Lead Free* Brass 21⁄2" (65mm) Cast IronSpring cage: IronBottom plug: Lead free brassBottom p

Related models: LF223

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Watts LF223S User Manual

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Summary of Contents

Related models: LF223

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