Bearcat BC-502/CRC, Instruction Manual

Page: 137 / 164

137
K Valve (spread circulate) or “bypass valve”
When the Master switch is turned on, a pneumatic valve in the rear
control box supplies air through a pre-set 60 psi regulator to a diaphragm
cylinder which presses down on a disk to close the spread circulate line.
Sometimes a piece of coke or hard contaminate can stick to the seat of
the disk. This can cause bypass or leakage through the “K” valve resulting
in light spread rate or the loss of an entire tank of flush fluid. The disk can
be checked and cleaned without the
removal of the “K” valve.
a. (Product pump in neutral)
remove 6 bolts on top[ of
“K” valve. (Be careful with
gasket) Lift the top of the
assembly out of the valve
housing. Notice the slots in
the top outside the large
hole. If they are not visible,
the gasket has stuck to the
bottom instead of the top
as shown in picture.