Aprilaire 4280 Shock Arrestor 320735-701 This genuine OEM Trane replacement

This genuine OEM Trane replacement part

As a direct replacement for PUM2011 and PUM3011

Enhanced Durability: Forged from high-quality brass to withstand high-pressure environments

While standardized for ClimateMaster equipment

This 5th generation fixed-speed compressor minimizes mechanical failure points by eliminating complex internal valves

Aprilaire 4280 Shock Arrestor 320735-701 This genuine OEM Trane replacementThe Aprilaire 4280 Shock Arrestor is a high performance water hammer suppressor engineered specifically for residential and commercial HVACR applications. This inline water shock absorber is the primary defense against the damaging effects of water hammer, which occurs when solenoid valves close rapidly, causing pressure spikes and loud pipe vibrations. Optimized for 1 4 inch O. D. copper or plastic tubing, this plumbing surge protector stabilizes