Watts LF15M2-C-DR Lead-Free PDI Size C Water Hammer Arrestor, NPT

The Watts LF15M2-C-DR 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 C under PDI Standard WH201, covering 33–60 fixture units. It features a epdm seat. Rated to 150 psi. This model is certified lead-free for potable-water installations.

This Watts lead free, pre-charged, PDI size C copper water hammer arrestor features a polypropylene piston, EPDM O-ring seal, and a 1 inch brass NPT threaded connection. It is designed to operate on all domestic and commercial lines up to 150 psi (10.6 bar) working pressure and a temperature range of 33 Degree F to 180 Degree F (0.5 Degree C to 82 Degree C).

Features

• 1" NPT Threaded connection
• Polypropylene Piston
• EPDM O-ring seal
• PDI Size C

Common Questions

What size do I need for my fixtures?

The LF15M2-C-DR is PDI size C under PDI Standard WH201, rated for 33–60 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 60 fixture units on the branch, step up to the next letter.

Is it ASSE 1010 certified?

Yes. The LF15M2-C-DR is certified to ASSE 1010, the performance standard for water hammer arrestors, and complies with PDI WH201.

Is it lead-free / potable safe?

Yes. The LF15M2-C-DR 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-C-DR 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
• Seat / Seal Material: EPDM
• Max Pressure (psi): 150
• Application: Domestic Water
• Pack Quantity: 12
• Country of Origin: South Korea
• Warranty: 1 Year Limited
• MPN: LF15M2-C-DR
• Lead-Free: Yes
• Accessory Type: Water Hammer Arrestor
• PDI Size (WH201): C
• Fixture Units: 33–60
• Body Style: Straight
• ASSE 1010 Certified: Yes