Autotrol Brine Refill Controller 0.33 gpm. p/n 1243510 for ECO and ECOULTRA 367 & 368 with BALL

The 1243510 is the 0.33 US gpm brine refill flow control washer used in the refill flow control assembly on Autotrol 367 and 368 valves fitted to WrekinWater ECO and ECOULTRA softeners. This version includes the check ball as well as the calibrated flow washer, so it's a complete like-for-like replacement of both wearing components in one go rather than reusing the old ball. The check ball prevents backflow or siphoning through the refill line when the softener isn't actively refilling the brine tank, working alongside the flow washer to keep brine strength consistent. It's stocked by WrekinWater as a complete replacement kit.

Technical specifications

Symptoms that mean you need this part

• The brine tank is filling with noticeably more or less water than usual at the end of regeneration
• The check ball is missing, cracked, or not seating, allowing water to siphon or drain back through the refill line
• Softening performance has dropped and the brine solution looks weaker than normal
• You're servicing the refill flow control assembly and want to renew both the washer and the check ball together

Why it fails / why it matters

The refill flow control assembly relies on two parts working together: the calibrated washer sets the refill flow rate, and the check ball stops water siphoning back out of the brine line once the refill stage has finished. Scale and grit wear the washer's orifice over time, while the check ball can crack, swell, or simply fail to seat properly, and either fault throws off the brine tank's water level. Replacing both parts together as this kit does removes any doubt about which component was at fault and restores the correct refill volume and seal.

Why buy this from WrekinWater

WrekinWater has supplied Autotrol and Pentair valve components to installers and DIY customers for over 15 years from its Bettisfield, Shropshire base, and stocks the full range of Pentair Fleck, Autotrol, Clack and Kinetico parts so you always get the correctly calibrated flow rate. The business is rated Excellent on Trustpilot and has served more than 50,000 customers who value getting the complete part rather than chasing down a missing check ball separately.

How to fit it

1. Isolate the softener at the bypass valve before opening the refill flow control housing
2. Locate the refill flow control assembly, typically housed in the brine well fitting or valve head depending on your softener
3. Unscrew the retaining cap and withdraw the old flow washer and check ball together
4. Fit the new 0.33 gpm washer and check ball from this kit into the housing in the correct orientation
5. Reassemble the retaining cap, tightening by hand only to avoid cracking the housing
6. Run a manual brine refill cycle and check the brine tank fills to the correct level with no drips or siphoning at the fitting