Pneumatic Test-Ball Winter Plug for 3 Inch Pipe - 2.77 to 3.25 Inch Usage Range gallons-per-minute_70-79 The Salt PockeTester measures the

The Salt PockeTester measures the Sodium Chloride level in salt water pools with a range from 0 to 9

10 times smaller than sand

and two Pro Series 12 GPD peristaltic pumps

This o-ring fits: Clean and Clear Plus Fiberglass Reinforced Polypropylene Tank Filters

This Recyclables Cans Only sign measures 12 x 10 inches

Pneumatic Test-Ball Winter Plug for 3 Inch Pipe - 2.77 to 3.25 Inch Usage Range gallons-per-minute_70-79 The Salt PockeTester measures theThis 3 inch pneumatic test ball winter plug is designed for a variety of applications including winterizing pools by blocking pipes. They can also be used to test drains, tests and waste systems. And they can be used on any type of pipe. Made from natural rubber, these plugs are tough, tear resistant and have excellent expansion and memory. The removable zinc plated steel chain and ring handle act as an anchor to prevent plug from sliding down a line.