Watts LF15M2-B 3/4 Lead-Free PDI Size B Water Hammer Arrestor, Copper, NPT

The Watts LF15M2-B 3/4 is a lead-free sealed-piston water hammer arrestor with NPT connections. It absorbs the pressure spike a quick-closing valve or appliance creates, protecting piping and fixtures from banging and shock damage. It is PDI size B under PDI Standard WH201, covering 12–32 fixture units. It features a copper body and a epdm seat. Rated to 150 psi. This model is certified lead-free for potable-water installations.

This 3/4 inch, unit size B lead free water hammer arrestor is used in commercial and industrial applications to control water pressure shock and prevent water hammer conditions. It consists of a copper body with a lead free brass NPT threaded hex adapter, EPDM seals and O-rings, polypropylene piston, and cap. It is factory air charged at 60 psi (4.2 bar) and is permanently capped and epoxy sealed to absorb the shock and is not rechargeable. It may be installed in new or existing plumbing systems with a standard pipe tee vertically, horizontally or at any angle and is ideal for commercial dishwashers, washing machine, and quick-closing faucets applications. It is designed to operate on all domestic and commercial lines at 150 psi (10.3 bar) working pressure. This water hammer arrestor, size B is used to cover the required PDI listed 12 to 32 fixture units.

Features

• Lead free brass NPT hex adapter for easy installation
• Factory air charged at 60 psi (4.2 bar)and is not rechargeable in the field
• May be installed in concealed locations without access panels
• ASSE, ANSI and PDI approved and UPC listed

Common Questions

What size do I need for my fixtures?

The LF15M2-B 3/4 is PDI size B under PDI Standard WH201, rated for 12–32 fixture units. Total the fixture units on the branch you are protecting and choose the letter whose range covers that total — PDI sizes run AA (1–3 fixture units) through F (155–330). Above 32 fixture units on the branch, step up to the next letter.

Is it ASSE 1010 certified?

Yes. The LF15M2-B 3/4 is certified to ASSE 1010 (ANSI A112.26.1M), the performance standard for water hammer arrestors, and complies with PDI WH201.

Is it lead-free / potable safe?

Yes. The LF15M2-B 3/4 is certified lead-free: its wetted surfaces meet the 0.25% weighted-average lead limit of the U.S. Safe Drinking Water Act, so it is approved for potable water in all states.

Does it need recharging?

No. The LF15M2-B 3/4 is factory air-charged to 60 psi and then permanently capped and epoxy sealed. The piston cannot become waterlogged, so the unit is not rechargeable in the field and needs no maintenance over its life.

Specifications

• Connection: NPT
• Body Material: Copper
• Seat / Seal Material: EPDM
• Max Pressure (psi): 150
• Application: Domestic Water
• Pack Quantity: 25
• Country of Origin: South Korea
• Warranty: 1 Year Limited
• MPN: LF15M2-B 3/4
• Certifications: ASSE-1010, ANSI-A112.26.1, IAPMO
• Lead-Free: Yes
• Accessory Type: Water Hammer Arrestor
• PDI Size (WH201): B
• Fixture Units: 12–32
• Body Style: Straight
• ASSE 1010 Certified: Yes