Zurn Wilkins 1260XL-A Lead-Free PDI Size A Water Hammer Arrestor, Copper

The Zurn Wilkins 1260XL-A is a lead-free copper piston water hammer arrestor with NPT connections. It is PDI size A under PDI Standard WH-201, covering 1-11 fixture units. It features a copper body. Rated to 250 psi and 32°F to 212°F. This model is certified lead-free for potable-water installations.

The Wilkins 1260XL Water Hammer Arrestor is used in a mixture of residential, commercial, and industrial water line applications for protection against over-pressure during surges following quick valve closure. Excessive pressure surges are absorbed by the pre-charged air cushion that is permanently sealed within the water hammer arrestor. The 1260XL can be installed within a stud bay, eliminating the need for an access panel. Features include all copper and brass external construction, a temperature range of -40°F to 212°F, and a maximum transient pressure surge of 150 psi following quick valve closure.

Features

• Design reduces pipe banging caused by water hammer
• Eliminates need for access panel through installation within stud bay
• Air chamber is permanently sealed to eliminate excessive pressure surges
• Copper and brass external construction resist corrosion
• Low-lead law compliant
• PDI® Certified WH-201
• ASSE® Listed 1010
• ANSI A112.26.1

Common Questions

What size do I need for my fixtures?

The 1260XL-A is PDI size A under PDI Standard WH-201, rated for 1-11 fixture units. Total the fixture units on the branch you are protecting and pick the letter whose range covers that total; above 11 fixture units, step up to the next letter.

How does it absorb the pressure spike?

A polycarbonate or PVC piston compresses against a permanently sealed, factory-charged air cushion (60 psi nitrogen preload). Properly sized and placed, it keeps the transient pressure surge from a quick-closing valve at or below 150 psi.

Does it need maintenance or recharging?

No. The piston and air charge are sealed at the factory -- there is nothing to recharge, and it can be installed inside a closed stud bay with no access panel.

Specifications

• Type: Water Hammer Arrestor
• Connection: NPT
• Body Material: Copper
• Max Pressure (psi): 250
• MPN: 1260XL-A
• Temperature: 32°F to 212°F
• Certifications: ASSE-1010, ANSI-A112.26.1, NSF-372
• Lead-Free: Yes
• PDI Size (WH-201): A
• Fixture Units: 1-11
• Body Style: Copper Piston
• ASSE 1010 Certified: Yes
• Max Transient Pressure (psi): 150
• Pre-Charge Pressure (psi): 60