Flow and pressure switches | PoolAndSpaCentre

Hot Tub pressure switches and Spa sensors monitor operating conditions. The correct fitment and adjustment ensures spa operating safety.

The pressure switch or flow switch is a safety device which shuts off the heater circuit if water flow is interrupted. Closed during normal spa operation, it snaps open if pump fails or an air pocket forms. This prevents the heater from meltdown if there is an equipment failure.

Balboa Pressure Switch

The most common pressure switch in the UK & European market, fits a huge variety of hot tubs and will replace most other makes of flow switch.

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Hydroquip Tecmark Pressure Switch

This pressure switch can carry either of the manufacturers name TecMark 3902 (3903 with screws)or Hydroquip 34-0178. It the same pressure switch.

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Len Gordon Pressure Switch

Len Gordon's most popular switch in the UK & European market, fits a spa ina box and Lazyspa's.

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Harwil Reed Flow Switch (short)

This Harwil Reed Flow Switch's is found on Gecko / Hydroquip & Laing systems. identified by a thread diameter of 1" and grey probe length of 1"

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Harwil Reed Flow Switch - 2 barb assembly

This is the complete assembly has a clear Tee with 2 x 3/4 inch barb straight through connectors. T Piece available seperately

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Harwil Reed Flow Switch - 3 barb assembly

Complete Harwil Assembly complete with 3 barb tee piece but can be supplied with 2 differing lead connections off the switch.

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Harwil Reed Flow Switch (long)

This Harwil Reed Flow Switch's is found on Gecko / Hydroquip & Laing systems. Specifically Beechcomber hot tubs it has a thread diameter of 3/4" and grey probe length of 1-7/8"

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Gecko Dtec Pressure Switch

The Dtec pressure switch is not so prevalent in the UK, it is mainly used in new Gecko heaters.

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Harwil Flow switch replacement kit

A Harwil flow switch replacement kit - note the clear housing design - see inside for full details

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