Service
Manual
9406
Data
Maximum capacity, fully open
outlet 160 l/min
inlet
20 l/min
Working range, water pressure
0,5-10 bar
Number of outlets
1, 2, 3 or 4
Description
The valve is solenoid-operated, having a rubber
membrane as the sealing element. Opening and
closing actions are assisted by the water pressure.
With the solenoid de-energised, the valve is closed.
A pilot pressure opening in the membrane allows
water pressure to act on the top of the membrane
and press it down on the valve seat, closing the
valve. In this state, the hole in the centre of the
membrane is sealed by a rubber disc pressed down
on to the membrane by the compression spring
above the solenoid armature.
Energising the solenoid raises the armature against
the spring, opening the hole in the middle of the
membrane and releasing the water pressure above
the membrane. The water pressure then raises the
membrane from the valve seat and the valve opens.
The inlet pipe contains a fine-mesh strainer to trap
solid particles. The strainer can be easily removed
for cleaning
The outlet from the valve contains a choke which
adjusts the water flow rate to suit the requirements of
the machine.
34. Water inlet valve
34
Coil
Plunger
Pressure
spring
Outlet
1
Pressure spring
Plunger
Pilot pressure
opening
Armature
retainer
Valve head and
diaphragm
Filter
Valve casing
Armature retainer
Valve disc
Diaphragm
