Specification

Rated Flow (established by approval agencies)
Flow Characteristics
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Zurn Industries, LLC | Wilkins
1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax [phone]
In Canada | Zurn Industries Limited
7900 Goreway Drive, Unit 10, Brampton, Ontario L6T 5W6, 877-892-5216
www.zurn.com
0
34
69
103
138
0.0 0.6 1.3 1.9 2.5 3.2 3.8 4.4 5.0 5.7 6.3
0
5
10
15
20
0 10 20 30 40 50 60 70 80 90 100
PRESSURE LOSS (kPa)
FLOW RATES (l/s)
PRESSURE LOSS (PSIG)
FLOW RATES (GPM)
MODEL NR3XL 1-1/4", 1-1/2" & 2" (STANDARD & METRIC)
0
34
69
103
138
0.0 0.6 1.3 1.9 2.5
0
5
10
15
20
0 10 20 30 40
PRESSURE LOSS (kPa)
FLOW RATES (l/s)
PRESSURE LOSS (PSIG)
FLOW RATES (GPM)
MODEL NR3XL 1/2", 3/4" & 1" (STANDARD & METRIC)
TAILPIECE
UNION NUT
TYP. STUD BAY OR
EXPOSED WALL
CRIMP RING
DIRECTION OF FLOW
SUPPORT
UNION
GASKET
Typical Installation
Local codes shall govern installation requirements.
Unless otherwise specified, the assembly shall be mounted
in accordance with the latest edition of the Uniform Plumbing
Code. The Model NR3XL may be installed in any position.
The assembly shall be installed with sufficient side clearance
for testing and maintenance. Multiple installations are recom-
mended for wide demand variations or where the desired
pressure reduction is more than 4 to 1 (ie: 200 psi inlet
reduced to 50 psi outlet). CAUTION: Anytime a reducing
valve is adjusted, a pressure gauge must be used down-
stream to verify correct pressure setting. Do not bottom
adjustment bolt on bell housing.
Specications
The Water Pressure Reducing Valve shall be certified to NSF/ANSI 61 and ASSE® Listed 1003, available with single union,
double union and less union end connections. The main body shall be low lead cast bronze (ASTM B 584) alloy. The bell shall
be composite plastic. The cartridge shall be acetal and incorporate an integral seat. The seat disc elastomer shall be EPDM.
The assembly shall be accessible for maintenance without removing the device from the line. The Water Pressure Reducing
Valve shall be a ZURN WILKINS Model NR3XL.
TYPICAL INSTALLATION
NR3XLDUPEX INSTALLATION
2" (50mm)
1-1/2" (40mm)
1-1/4" (32mm)
1/2" (15mm)
3/4" (20mm)
1" (25mm)
OUTDOOR INSTALLATION
DIRECTION OF FLOW
WATER
METER
MODEL 850XL
SHUT-OFF
VALVE
MODEL
NR3XLG
HOSE BIBB
XL
DIRECTION OF FLOW
WATER
METER
MODEL 975XL2
BACKFLOW
PREVENTER
MODEL SXL
STRAINER
MODEL BFP-9
HOSE BIBB VACCUM
BREAKER
HOSE BIBB
MODEL 850XL
SHUT-OFF VLV.
MODEL NR3XLDU
REGULATOR
MODEL XT
EXPANSION
TANK
WATER
HEATER
MODEL TP1100A
T & P VALV E
WILKINS
XL
XL
"Flow curves are based on a
50 psi pressure differential"