Specification

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
3544 Nashua Drive, Mississauga, Ontario L4V 1L2  Ph. 905-405-8272, Fax [phone]
www.zurn.com
Rev. A
Date: 6/13
Document No. WHA-1250XL
Product No. Model 1250XL
Model 1250XL
Water Hammer Arrester
Page 1 of 2
Application
Ideal for use where Lead-Free* fittings are required. De-
signed to protect residential, commercial and industrial
water lines during pressure surges following quick valve
closure. This excessive pressure surge is absorbed by
the pre-charged cushion of air permanently sealed within
the water hammer arrester. The water hammer arrester
may be installed within a stud bay without the need for
an access panel.
Standards Complianc
• ASSE® Listed 1010
• ANSI A112.26.1
LEAD PLUMBING LAW COMPLIANCE
*(0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT
• Lead Plumbing Law Certified by IAPMO R&T
Materials
Body Copper Tube (seamless, Type “L”)
Tailpiece Low Lead Brass
Piston Acetal (NSF Listed) Polycarbonate or
Low Lead Brass
O-rings Buna Nitrile (FDA approved)
Solder Lead Free
Features
Sizes:  A, B , C , D , E , F
Temperature range 33° F to 180°F
End connections Threaded ANSI/ASME B1.20.1
Dimensions & Weights (Do Not Include Pkg.)
Speci cations
The Water Hammer Arrester shall be ANSI 3rd party certified to comply with states' lead plumbing law 0.25% maximum
weighted average lead content requirement, consist of a copper body with a low lead brass hexagonal male pipe
threaded inlet, an acetal, polycarbonate or low lead brass piston with Buna Nitrile or EPDM o-rings and lead free
solder. The device shall be pre-charged and sealed at the factory. The Water Hammer Arrester shall be a WILKINS
Model 1250XL
A
B
Pressure
Maximum transient pressure surge, with arrester properly
sized and placed in the water supply system, will not rise
above 150 psi following quick valve closure. Maximum
static pressure: 150 psi. For best performance, static line
pressure should not exceed 85 psi; contact the factory
for proper sizing if static pressure is greater.