Specification

Rev. P
Date: 11/19
Document No. REG-NR3XL
Product No. Model NR3XL
Model NR3XL
Water Pressure Reducing Valve with Integral
By-Pass Check Valve and Strainer
Page 1 of 2
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
SIZE CONNECTIONS
DIMENSIONS (approximate)
WEIGHT
A B C D
in. mm in. mm in. mm in. mm in. mm lbs. kg
1/2 15 SINGLE UNION 4 3/8 111 6 1/4 159 1 1/8 29 2 1/2 64 3 1.5
1/2 15 ROUGH IN 3 3/4 95 SAME AS LESS UNION
1/2 15 LESS UNION 3 1/2 89 6 1/4 159 1 1/8 29 2 1/2 64 3 1.5
1/2 15 DOUBLE UNION 5 1/4 133 6 1/4 159 1 1/8 29 2 1/2 64 3 1.5
3/4 20 SINGLE UNION 4 7/16 113 6 1/4 159 1 1/8 29 2 1/2 64 3 1.5
3/4 20 ROUGH IN 3 3/4 95 SAME AS LESS UNION
3/4 20 LESS UNION 3 1/2 89 6 1/4 159 1 1/8 29 2 1/2 64 3 1.5
3/4 20 DOUBLE UNION 5 3/8 137 6 1/4 159 1 1/8 29 2 1/2 64 3 1.5
3/4 20 DOUBLE MALE METER 3 5/8 92 6 1/4 159 1 1/8 29 2 1/2 64 3 1.5
1 25 SINGLE UNION 4 15/16 125 6 1/4 159 1 1/8 29 2 1/2 64 4 2
1 25 ROUGH IN 4 1/4 108 SAME AS LESS UNION
1 25 LESS UNION 4 102 6 1/4 159 1 1/8 29 2 1/2 64 3.5 1.6
1 25 DOUBLE UNION 5 15/16 151 6 1/4 159 1 1/8 29 2 1/2 64 4.5 2.1
1 25 DOUBLE MALE METER 4 102 7 3/4 197 1 3/16 30 3 76 4 2.0
1 1/4 32 SINGLE UNION 6 3/16 157 7 3/4 197 1 3/16 30 3 76 5.5 2.5
1 1/4 32 ROUGH IN 5 1/4 133 SAME AS LESS UNION
1 1/4 32 LESS UNION 5 127 7 3/4 197 1 3/16 30 3 76 5 2.3
1 1/4 32 DOUBLE UNION 7 3/8 187 7 3/4 197 1 3/16 30 3 76 6 2.7
1 1/2 40 SINGLE UNION 6 5/16 160 8 1/2 216 1 3/4 45 3 3/4 95 6.6 3
1 1/2 40 ROUGH IN 5 1/4 133 SAME AS LESS UNION
1 1/2 40 LESS UNION 5 127 8 1/2 216 1 3/4 45 3 3/4 95 5.5 2.5
1 1/2 40 DOUBLE UNION 7 1/2 191 8 1/2 216 1 3/4 45 3 3/4 95 7.7 3.5
2 50 SINGLE UNION 6 1/4 159 8 1/2 216 2 51 3 3/4 95 8.1 3.7
2 50 ROUGH IN 5 1/4 133 SAME AS LESS UNION
2 50 LESS UNION 5 127 8 1/2 216 2 51 3 3/4 95 6.7 3
2 50 DOUBLE UNION 7 1/2 191 8 1/2 216 2 51 3 3/4 95 9.5 4.3
Application
Ideal for use where Lead-Free* valves are required. Designed for
installation on potable water lines to reduce high inlet pressure to a
lower outlet pressure. The integral strainer makes this device most
suitable for residential and commercial water systems that require
frequent cleaning of sediment and debris. The direct acting integral
by-pass design prevents buildup of excessive system pressure
caused by thermal expansion. The balance piston design enables
the regulator to react in a smooth and responsive manner to
changes in system flow demand, while at the same time, providing
protection from inlet pressure changes.
Standards Compliance
• ASSE® Listed 1003
• IAPMO® Listed
• CSA® Certified
• Meets the requirements of NSF/ANSI 61*
*(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Materials
Main valve body Low Lead Cast bronze ASTM B 584
Bell housing UV resistant polymer composite
Internals Stainless steel, 300 Series
Stem Low Lead Brass
Elastomers EPDM (FDA approved)
Buna nitrile (FDA approved)
Cartridge Delrin™
Springs 302 Stainless Steel
Strainer screen 300 Series Stainless Steel
Features
Sizes: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"
Max. working water pressure (1/2” - 1-1/4”) 400 psi
Max. working water pressure (1-1/2” - 2”) 300 psi
Max. working water temperature 140°F
Reduced pressure range (1/2” - 1-1/4”) 15 to 75 psi
Reduced pressure range (1-1/2” - 2”) 25 to 75 psi
Factory preset 50 psi
Threaded connections (FNPT) ANSI B1.20.1
Copper connections (FC) ANSI B16.22
CPVC tailpiece: Max. hot water temp. 140°F @ 100 psi
Cold water rated temp. 73.4°F @ 400 psi
Dimensions & Weights (do not include pkg.)
A
B
D
C
NR3XL
NSF/ANSI 61
Options (Suffixes can be combined)
 
- standard with single union FNPT connection and
20 mesh strainer screen

C - with FC (copper sweat) union connection

DM - with double male 3/4" & 1" meter threads
connection with SS spring & sealed cage

G - tapped and plugged with gauge

DU - with double union connection (FNPT)

DULU - with 2 integral FNPT connection (no union)

PEX - with male barbed connection tailpiece for
crossed-linked polyethylene tubing (1/2" - 1" only)
PEXF1960 - with male barbed connection PEX tailpiece
conforming to ASTM F1960 (1/2" - 1" only)

SC - with ss adjustment bolt and lock nut with ss spring
for below-ground installations

P - tapped and plugged for gauge

CPVC - CPVC tailpiece connection (3/4" - 1”)

HRSC - High Range 15-150 psi (1/2"-1-1/4" only) with
sealed cage
 DUPF - with 2 Z-Bite™ push fit tailpiece connection
250 psi max pressure (1/2" - 1" only)
DUPR - with 2 Z-Press™ press fit tailpiece connection
250 psi max pressure (3/4" - 2" only)
Accessories
 Repair kit
 3/4" NR3DUSPC Special plastic spacer nipple
 1-1/4" BR4DUSPC Steel pipe
 1-1/2" NR3DUSPC Steel pipe
 2" NR3DUSPC Steel pipe
 TPKXL Lead-Free Tailpiece kit
 TPKXLPF Z-Bite™ push fit Tailpiece kit
250 psi max pressure (1/2"-1" only)
 TPKXLPR Z-Press™ press fit Tailpiece kit
250 psi max pressure (3/4"-2" only)
 RFK-114NR3XL Extends body length of 1-1/4"
NR3XL to match 1-1/4" 70DU for
easy retrofit.