Made by Harwil

Available in 2 types, both have 3/4" connections but  this one has a small connection that comes of the bottom which is used to empty all the water out when the spa is drained down, please see images.

This product is one of the most popular hot tub flow switches and can be found in use on numerous brands of hot tubs and spas.

This product is a favourite with hot tub owners as it in ingeniously simple to fit.

The hot tub switch can be removed to easily replace the existing switch without having to do any complicated hot tub plumbing.

• Length: 12.5cm
• Height: 6.5cm
• Thread: 1" (switch thread width)
• Connections: 2 x 3/4" (internal plumbing pipe size) and 1 x 3/8" lower port

Manufacturers Code

Product Specification

SKU:  31609
Brand:  Harwil
Length (cm):  12.5
Height (cm):  6.5
Includes Cable:  Yes
Connection:  Micro Pin

Please note all Hot tub Parts sold are UK Spec, which means designed for 230 V at 50Hz

Related Products

Need More Detail?

At Hot Tub DIY we want to make it as easy as possible for you to repair or build your hot tub, the following guides relate to this product.

For a full list of guides please go to our Articles page and choose a section : Hot Tub Help Articles

Hot Tub Electrical Guides

Customer Reviews

Delivery Information

We’ve reduced many of the delivery charges and now offer a better range of options linked to the value of your order. Plus we have included free packaging and handling for all orders.

Some larger Items

Some larger items (for example hot tub covers) come with a delivery surcharge, these are individual costs that only apply to these specific items. Detail of the costs are on the specific item pages and appear in the postage cost.

Liquids and Chemicals

Please note we cannot send liquids and chemicals to anywhere other than main land UK due UK and international Chemical handling laws.

England and Wales

All other items and areas

The standard charges have been set high to cover extra cost on postage to other areas, so please get in touch for a quotation.

Europian Delivery

The following areas take between 2 -5 days to deliver.

Want more detail or help on a Harwil Flow Switch 3 Port?