Watts Fleck 3900 Brass Valve - Manual (Page 5)

Printed in U.S.A.
Page 5
MODEL 3900
Water Conditioner Flow Diagrams (Cont’d.)
4
SLOW RINSE POSITION
5
RAPID RINSE POSITION
6
BRINE TANK REFILL POSITION
Hard water enters at valve inlet

flows thru injector nozzle and throat

down thru the mineral

into the
bottom distributor  up the distributor tube  around the piston and out the drain..
Hard water enters at valve inlet

flows thru the regeneration
valve directly down thru the mineral

into the bottom distributor
 up the distributor tube  around the piston and out the drain.
Hard water enters at valve inlet

flows thru nozzle and thru throat to
brine valve to refill the brine tank. Inlet flow also continues down thru
mineral to the bottom distributor. Conditioned water flows up thru the
distributor tube, around the piston and out the outlet. Note: An option
is available to keep service valve in by-pass position until the end of
brine tank refill cycle.
DRAIN
INLET
DRAIN
INLET
SERVICE
OUTLET
INLET
DRAIN
INLET