Tecmark Brown Mushroom Air Button, PT13130-02

The Tecmark PT13130-02 is a Tri Delta raised cone mushroom air button in brown. It is the push button side of a pneumatic spa control, the piece that sits in the deck or skirt where you press it.

How the control works

Pressing the button squeezes air down a length of tubing to an air switch at the equipment pack, and that switch does the actual electrical work. Because the button carries only air, nothing live reaches the wet surface where the bather touches it.

When to replace it

Buttons crack, take on water and lose their spring long before the switch behind them fails. If the equipment no longer responds to a press, replacing the button is the cheap first move.