Hot Tub Parts and Accessories / Hot Tub Electronics

Tecmark Pressure Switch For Hot Tub 3902

Tecmark pilot duty adjustable hot tub heater pressure switch rated for 1 amp at 120 volts, 72VA pilot duty @ 24VAC.

Details:

Brand: Tecmark

Model: 3902

1/8" threads (3/8 inch actual O.D)

1-5 PSI adjustable

2 terminals no common

Maximum 1A @ 120 VAC, 72 VA Pilot Duty @ 24VAC

The Tecmark 3902 Pressure Switch in a hot tub or spa is a pressure sensor that is mounted onto the heater housing, or very close to the exit point of the heater. It's a safety switch with the sole purpose of sending a signal to the circuit board to shut off the heater if low pressure (low water flow) occurs to protect the heater from overheating and burning out.

In a hot tub, pressure is an easy way to determine flow rates through the pipes, pump and heater. Some spas also use a Flow Sensor, in addition to (or instead of) the Pressure Switch, to be sure water is flowing properly for the heater to operate safely.

Pick up your pool and spa supplies at our Langley/Surrey store or choose home delivery where available.