For maintaining the water pressure in a residential water pump system when the pump is not running.
Features: • Diaphragm is FDA approved. • Two part urethane finish over epoxy primer coat provides durable appliance-like finish. • Precharged air chamber provides greater water capacity. • Precharged to 28 PSI (RL62,RL81, RL119 - 38 PSI). • 100 PSI maximum working pressure (RL119-125 PSI).