V3001, WS1 Valve Body assembly for Downflow version ( = D ), which is the most common type.
* This is an Empty - Bare valve body.
Only includes distributor o-ring, V3105,
and NOT top of tank o-ring V3180.
You must re-use or replace all internal parts.
LIMIT ( 1 ) per customer due to limited supply available from manufacturer.
Note: This is the most common "version" of the WS1 valve body ( D = downflow ),
but not to be confused with the "rarely" seen version,
V3001-02UP, Upflow mixing.
** You can tell if you have Downflow or Upflow by the hole used for the Injector. They are marked DN ( downflow ) or UP ( upflow ). Whatever hole the Injector is installed into, would be the type of Valve Body you have.
Also, the Main piston is Amber ( only ) if Downflow, and Amber with Black, if Upflow.
If you are not sure, then send model number and photos before ordering this Valve Body.