Specification
Zurn Industries, LLC | Wilkins
1747 Commerce Way, Paso Robles, CA U.S.A. 93446 Ph. 855-663-9876, Fax 805-238-5766
In Canada | Zurn Industries Limited
3544 Nashua Drive, Mississauga, Ontario L4V 1L2 Ph. 905-405-8272, Fax 905-405-1292
www.zurn.com
Rev. A
Date: 5/13
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
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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
• NSF® Listed - Standard 61, Annex G*
• Certified to NSF/ANSI 372* by IAPMO R&T
*(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™ (NSF Listed)
Springs Oil temp wire, ASTM A 229
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
Minimum inlet pressure = 80 psi as per UPC Code
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.)
Options
(Suffixes can be combined)
c
- standard with single union FNPT connection and
20 mesh strainer screen
c
C - with FC (copper sweat) union connection
c
DM - with double male 3/4" & 1" meter threads
connection with SS spring & sealed cage
c
G - tapped with gauge
c
DU - with double union connection (FNPT)
c
LU - with integral FNPT connection (no union)
c
PEX - with male barbed connection tailpiece for
crossed-linked polyethylene tubing
c
SC - with ss adjustment bolt and lock nut with ss spring
for below-ground installations
c
P - tapped and plugged for gauge
c
CPVC - CPVC tailpiece connection (3/4" - 1”)
c
HRSC - High Range 15-150 psi (1/2"-1-1/4" only) with
sealed cage
Accessories
c Repair kit
c 1" BR4DUSPC Special plastic spacer nipple
c 1-1/4" BR4DUSPC Steel pipe
c 1-1/2" NR3DUSPC Steel pipe
c 2" NR3DUSPC Steel pipe
c TPKXL Lead-Free Tailpiece kit
A
B
D
C
NR3XL