Hot Tub Supplies:chemicals/filters/parts

Teck Mark Pressure Switch (Grey)1/8 NPT-3902

C$39.99

Used for Gecko , CTI, Spa Builders and other spa boxes
Mainly used in S class, and M class. Pressure switch is to detect the water flow through the heater and protect the spa pak. If there is no flow or faulty pressure switch you may notice 3 tiny dots flashing , FLOW or FLC (Pressure Switch Closed)

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