Fleck Valves - LEAKS out the DRAIN HOSE

LEAKS out the DRAIN HOSE:

Fleck valves use pistons and internal seals to control water flow through the control valve head.
When water continuously flows out the drain hose, and the unit has finished the regeneration process ( IN SERVICE position ),
it is usually a "bad" or "worn" SEAL, and replacing the Seals & Spacers is required.
It is also normal to change the Main Piston at the same time,
as age will effect this part over the years,
and as long as you have the valve apart,
it makes sense to put a new piston in at the same time.

Fleck 5000, 5600, 6600, 6700, and our Hankscraft valves all use Seals & Spacers 60125,
but the Main Piston can vary ( 60115-00 for 5000, or one of the 60102-xx for 5600 type valve bodies ).
Reference the different Pistons,
Mechanical ( 60102-00, 60102-10, 60102-20 )
Electronic ( 60102-71, 60102-62 )
5000 Proflo ( also newer Rainsoft models ) 60115-00

Fleck 1500, 2500, 2510 uses Seals & Spacers kit 60121, and standard Piston is 60090.

** Also see below, Reasons why valve is still leaking after replacing 60121 set.

***** Same principles of Leaking Caused by Worn Out or Damaged Seals ( and sometimes a worn or damaged Main Piston ),
applies to the larger Fleck Valves also ( 2750, 2850, 2900, 3150, 3900, 9000, 9100, 9500, etc ).

*** Also, the Fleck 5600 and 2500 parts cross reference to MANY "Brands" out there.... such as MacClean, CUNO, and others.
Reference ID Your Valve Brand

Reasons why Fleck 2500 valve is still leaking after replacing the Seals & Spacers ( 60121 ).

Look at the condition of the Teflon on the Main Piston ( 60900 ).

see:

Piston_Assembly 60900.

Any scratches or worn through to the Brass, will cause the valve to leak.

Also, if any Seals did not stay in place ( and reason to use the stuffer tool when installing ).

If the Brass Valve Body shows any signs of "defect" where the Seals "seat".

Worn out brass valve body is common if the pH of the water is very low ( under 6.0 ) or very high ( above 8.0 ), and the valve has been in use for more than 10 years. The newer 2510 Noryl Plastic body valve is more durable under these types of water conditions ( pH high or low ).

Fleck 1500, 2500, and 2510 use the Seals & Spacers kit 60121, and Piston is 60090.
The Seals Kit, 60121, is also used in the Fleck 2750, and upper portion of the Fleck 2900 Valves, but use Main Piston 6009-HF ( not the standard 60090 ).