Spend £60 for FREE Delivery
Price Match Promise
Fully stocked UK warehouse
Established over 20 Years
No Quibble Returns
Helpful Customer Service
CLOSE
HAVE A QUESTION?
CLOSE
SHARE WITH A FRIEND

Enter your name, and your friends name and email address

CLOSE
PERSONALISE YOUR ITEM
CLOSE
BULK ORDER QUOTE
CLOSE
Stock Notification

Harwil Flow Switch - 1/2" NPT Connection

SPST

Extended 1 Year Warranty

In addition to the manufacturers standard warranty (usually 1 year) we also offer the opportunity for you to extend this warranty by a further 1 year (There is usually a one off fee to pay unless we are running a promotion) This can be arranged at the point of purchase or within a limited time afterwards.
Promotions - From time to time we run a promotiont to include a FREE 1year Extended Warranty on select products. If an item is eligible for a FREE extended warranty then this will be displayed on the product listing & will be noted in your basket.
An extended warranty is an easy way to protect your purchase, against any manufacturing defects causing breakdown. You will benefit from free repairs for the term of the warranty period & If your equipment can't be repaired then we will replace it free of charge.(A delivery surcharge may apply for non UK mainland addresses)
This warranty and the standard manufacturer’s warranty does not cover general wear and tear, abuse or misuse or incorrect installation.
If you would like any further information on our extended warranty scheme please call our Hydrospares team on 01326 371 483 OR email us at info@justspaparts.co.uk

LID: 20154
HArwil
21mm / 1/2"
SPST
Switch Only
£81.47 Inc VAT
( £101.84)
5492
Q12DSMSC
Special Order ItemLead time to be confirmed
Contact for lead time
Fast UK Delivery
Harwil Flow Switch - 1/2" NPT Connection
£81.47
RRP £101.84

This flow sensor ensures that the circulation pump delivers a sufficient flow of water to the heater to prevent overheating. If the flow is sufficient, the magnet sticks against the sensor rod and the flow information is sent to the control system.

This Harwil brand detector has a 1/2" TPM thread that screws into a tee or heater union. The stem length is suitable for 1.5-inch or 2-inch pipe sizes (48 to 63 mm diameter). It is designed for a maximum current of 0.5A.

This reed flow switch has a 1/2" MPT thread, and is designed for 1 ½" and 2" pipe fittings.

A very common component on many spas with low flow heating systems. Fits 1/2" NPT threaded pipe work and connects to the PCB. Installation is before the heater usually in a threaded tee fitting. Detects water flow allowing the heater to function correctly. No cable supplied.

More Info

Dimensions

  • Thread Diameter: 21 mm (1/2" MPT type)
  • Length of Contact Pin: 44 mm
  • Total Height (excluding contact pin and connectors): 89 mm

Part number

  • Harwil: Q12DSMSC
Customer Reviews

Write a review

star
star
star
star
star
Questions & Answers

Hi We are after a harwil flow switch part ref Q-12DS there are no measurements on the web description. Thank you

REVIEWED BY: Craig

0.50" NPT Overall Length: 87mm Used with 1 1/2" pipe (Code: Q-12DS/6M/1)

Answer from:

Submit a question

 
warning
Confirm add to basket
Return to listing
Add to basket
COMPARISON BASKET
COMPARE