8 - 1000210 - For 8in Diameter Vessel - 1.6gpm-6.1lpm Backwash Flow Controller for Autotrol Valves (No Ball Included)

The 1000210 is a fixed-orifice backwash flow controller sized for 8in diameter resin vessels, rated at 1.6gpm (6.1lpm), fitting into the drain line flow control (DLFC) housing on Autotrol control valves without needing a separate ball. It sets the backwash flow rate so a smaller vessel's resin bed lifts and cleans correctly without resin escaping to drain. It's the correct replacement when rebuilding an 8in vessel or replacing a worn controller, stocked by WrekinWater.

Technical specifications

Symptoms that mean you need this part

• Fine resin or media appearing in the drain water during backwash on a smaller vessel
• Backwash seems too gentle to lift and expand the bed properly
• Softening performance dropping off between services despite correct salt dosing
• The existing controller washer is cracked, warped or missing from the DLFC housing

Why it fails / why it matters

Smaller diameter vessels need a proportionally lower backwash flow rate than larger ones to achieve the same bed expansion without stripping resin out to drain, which is why the 1000210 is calibrated specifically for 8in vessels. A worn, missing or wrongly sized controller either starves the bed of the flow needed to lift trapped sediment and iron fouling, or lets too much water through and washes resin away over repeated regenerations.

Why buy this from WrekinWater

WrekinWater stocks the full range of Autotrol flow controllers by vessel size, alongside Pentair Fleck, Clack and Kinetico spares, built on over 15 years trading from Bettisfield, Shropshire (UK Company No. 11000488) and more than 50,000 customers served. With stock dispatched quickly and an Excellent Trustpilot rating, matching the exact controller to your vessel size is straightforward.

How to fit it

1. Isolate the softener at the bypass and shut off the mains supply
2. Locate the drain line flow control (DLFC) housing on the control valve body
3. Release the retaining cap or clip and remove the old flow controller washer
4. Fit the new 1000210 controller, checking the o-ring is present and undamaged
5. Refit the DLFC cap securely and restore the mains supply
6. Run a manual regeneration and check the backwash flow rate at the drain matches the 1.6gpm rating