Watts N223BS User Manual download pdf

Series N223B/N223BS

Super Capacity Water Pressure

Reducing Valves*

Sizes: 2

⁄2" – 3" (65 – 80mm)

Series N223B and N223BS Super Capacity Water Pressure Reducing

Valves are designed to reduce incoming water pressure to a sensible

level to protect plumbing system components and reduce water con-

sumption. 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 N223B features an enlarged

diaphragm, spring cage and seat orifice for super capacity perfor-

mance. Series N223BS has the same options as the N223B, except it

is furnished with a strainer. All parts are quickly and easily serviceable

without removing the valve from the line. The standard 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

• Bronze body construction

• Serviceable in line

• Series N223BS furnished with separate strainer

• Standard bypass feature controls thermal expansion pressure**

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

Models

N223B NPT threaded female inlet x NPT threaded female outlet

N223BS NPT threaded female inlet with strainer x NPT

threaded female outlet

For

⁄2" – 2

⁄2" (15 – 65mm) threaded connections, refer to literature

ES-223.

For 3" (80mm) flanged connections, refer to literature ES-N223F.

Specifications

A Water Pressure Reducing Valve shall be installed on the water ser-

vice pipe near its entrance to the building where supply main pres-

sure exceeds 60psi (413 kPa) to reduce it to 50psi (345 kPa) or lower.

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 built-in bypass check valves and strainer

will be acceptable. Approved valves shall comply with ASSE 1003. Valve

shall be a Watts Regulator Company Series N223B or N223BS (with

strainer).

For Commercial, Institutional and Industrial Applications

ES-N223B

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

diaphragm area for accurate

pressure control

Bronze body

construction

Renewable

stainless steel

alloy seat

Large stainless steel

perforated strainer screen

Sealed spring cage

Series N223B

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

80-50psi (551-345 kPa) resulted in a water savings of 30%.

** NOTE: The bypass feature will not prevent the pressure relief valve from open-

ing on the hot water supply system with pressures above 150psi (10.3 bar).

IMPORTANT: INQUIRE WITH GOVERNING AUTHORITIES

FOR LOCAL INSTALLATION REQUIREMENTS

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.

Job Name

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Contractor

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Approval

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Engineer

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Approval

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Summary of Contents

Page 1 - Series N223B/N223BS

Series N223B/N223BSSuper Capacity Water Pressure Reducing Valves*Sizes: 21⁄2" – 3" (65 – 80mm)Series N223B and N223BS Super Capacity Water P

Page 2 - Reduced Pressure Fall-Off

MaterialsBody: Bronze Seat: Replaceable stainless steel alloyStrainer Screen: Stainless steel (model N223S)Diaphragm: Reinforced Buna-NValve Dis

Related models: N223B

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Watts N223BS User Manual

Browse online or download User Manual for Relay Watts N223BS. Watts N223BS User Manual

Summary of Contents

Related models: N223B

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