Specification

Rev. Q
Date: 4/20
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. The sealed cage washer
and stainless steel adjustment bolt and nut improve corrosion
resistance for all applications including below-ground pit installation.
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/CAN 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)

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.