Disc 2 - Kinetico Meter Disc - up to max hardness of 125ppm (125 mg/L) 1505

The Kinetico Meter Disc 2 (part number 1505) is a small calibration disc supplied by WrekinWater that sets a Kinetico non-electric water meter to regenerate correctly for water hardness up to 125ppm (mg/L), suiting properties on moderately soft mains or borehole supplies. Fitting the disc that matches your tested hardness keeps the softener's regeneration schedule accurate to your actual water, rather than an assumed average.

Technical specifications

Symptoms that mean you need this part

• The softener seems to be regenerating on a schedule that doesn't match a recent water hardness test result
• A water hardness test has returned a reading in the moderately soft range but a different disc is currently fitted
• You've had a supply change, new borehole test, or house move and need to recalibrate the meter to the new reading
• Salt consumption or regeneration frequency looks inconsistent with what a moderately soft supply should need

Why it fails / why it matters

The hardness disc inside a Kinetico non-electric water meter sets how many litres the meter counts before it triggers a regeneration cycle, based on the softening capacity used per litre at that hardness level. If the disc fitted doesn't match your actual water hardness, the meter's maths is wrong from the start — either calling for regeneration too soon and wasting salt and water, or leaving it too late and letting some hardness through. Discs are calibration parts, not wearing parts, so the only reason to swap one is a mismatch between the fitted disc and your 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 complete 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 straightforward to order the exact disc for your test result at low cost.

How to fit it

1. Get a current water hardness reading for your property in ppm (mg/L), from your water supplier or a home test kit
2. Check the reading falls within Disc 2's range, up to 125ppm (mg/L)
3. Turn off the water supply to the softener and relieve system pressure before opening the meter housing
4. Open the Kinetico water meter body and remove the disc currently fitted
5. Fit Disc 2 (part number 1505), making sure it seats correctly, then close up the meter housing
6. Turn the water supply back on and confirm the meter runs smoothly and the softener returns to normal operation