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