意大利ode3通常闭电磁阀型号21WA3K0V130
the latter may notreopen even with the coil deactivated.
an excessive pressure difference between inlet and outlet, as
with 2 way normally closed direct acting solenoid valves,
causes an increase in the force required to open the pilot orifice,
so if this pressure difference is greater than the maximum
value for which the solenoid valve has been designed,
the latter may not open even when the coil is energized.
For a correct operation of the solenoid valve, and to avoid a quick wear of the diaphragm, it
is advisable that, once starting the valve closing, the actual flow isn’t higher than the Kv (i.e.:
flow rate through the valve with a pressure loss of 1 bar).
When the coil is energized the plunger moves downwards and,

意大利ode3通常闭电磁阀型号21WA3K0V130
In this family of solenoid valves there must be a minimum
pressure difference between the inlet pipe and the outlet one
to ensure correct functioning of the solenoid valve. However,
For this reason, should the inlet pressure when the valve is open, be higher than 1 bar, it is
not advisable the use of the valve itself with free outlet, i.e. without an outlet restriction bringing
the pressure drop to the value of 1 bar.
Moreover, particular attention must be paid in designing the hydraulic circuit to the problem of
water hammering which could cause overpressures such as to lacerate the diaphragm or
damage other parts of the solenoid valve.
by means of the rod, pushes the gasket holder into a position
that closes the orifice, preventing fluid flow.
Notes:
 

意大利ode3通常闭电磁阀型号21WA3K0V130