The Kinetico Meter Disc 1 (part number 1504) is a small calibration disc supplied by WrekinWater that sets a Kinetico non-electric water meter to trigger regeneration correctly for water hardness up to 63ppm (mg/L), making it the right choice for households and businesses in naturally softer water areas of the UK. Fitting the correct hardness disc is what keeps a Kinetico softener's metered regeneration accurate to the actual local water supply, rather than to a generic average.
Technical specifications
| Brand | Kinetico |
| Part Type | Water meter hardness calibration disc |
| Part Number | 1504 |
| Disc Reference | Disc 1 |
| Maximum Hardness Rating | 63ppm (mg/L) |
| Compatible With | Kinetico non-electric water meters |
| Material | Precision-moulded polymer |
Symptoms that mean you need this part
- Your Kinetico softener is regenerating far more often than seems necessary for a soft water area
- A recent water hardness test shows a reading in the softer range, but the softener is still set up for a higher hardness disc
- You've moved property or had a new hardness test carried out and the current disc no longer matches your actual supply
- Salt usage seems higher than expected for what should be a relatively soft water area
Why it fails / why it matters
A Kinetico non-electric water meter counts the exact volume of water passing through the softener, and the hardness disc fitted inside the meter determines how many litres are allowed to pass before that count triggers a regeneration. If a disc calibrated for a higher hardness than your actual supply is fitted, the meter will call for regeneration too early, wasting salt and water on a system that hasn't actually reached its softening capacity yet. Discs don't wear out or fail in the way mechanical parts do — the only reason to change one is to match the disc to your real, tested water hardness.
Why buy this from WrekinWater
WrekinWater has served more than 50,000 customers over 15 years from its base in Bettisfield, Shropshire, and stocks the full range of genuine Kinetico meter discs alongside Pentair Fleck, Autotrol and Clack parts. As a UK-registered company (Company No. 11000488) rated Excellent on Trustpilot, WrekinWater makes it simple and affordable to order the exact disc that matches your water hardness test result.
How to fit it
- Get an accurate water hardness reading for your property, either from your local water supplier or using a home hardness test kit
- Confirm the reading falls within the range covered by Disc 1, up to 63ppm (mg/L)
- Turn off the water supply to the softener and relieve any system pressure before opening the meter housing
- Carefully open the Kinetico water meter body and remove the existing hardness disc
- Fit Disc 1 (part number 1504) in its place, ensuring it seats correctly, then reassemble the meter housing
- Restore the water supply and check the meter is turning freely and the softener resumes normal operation
Disc 1 - Kinetico Meter Disc - Up to max hardness of 63ppm (mg/) 1504
