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The specific model number indicates the size and capacity of the arrestor, measured in "fixture units." Choosing the right one ensures your plumbing system remains quiet and damage-free. Thread Connection (IPS) Sizing Symbol Capacity (Fixture Units) 61 – 113 114 – 154 155 – 330

On branch lines with multiple fixtures (up to 20 feet), place the unit between the last two fixtures being served. [5201-5250]

Unlike some older air chambers, these can be installed at any angle (vertical, horizontal, or even upside down) because they are factory-sealed gas chambers. The specific model number indicates the size and

For maximum effectiveness, install the arrestor as close as possible to the fast-acting valve (like those in washing machines or dishwashers) causing the shock. For maximum effectiveness, install the arrestor as close

These arrestors feature a piston type mechanism that requires no regular servicing once installed.

manufactured by Jay R. Smith Mfg. Co. . These devices are essential plumbing components designed to absorb shock and prevent "banging" pipes caused by sudden pressure surges.

For detailed technical specifications or sweat connection variants (e.g., ), you can visit the Jay R. Smith Official Catalog.