Solenoid valve "bit" and "pass" each refers to what

Off solenoid valve is used to achieve a fluid path in the fluid path system, or the change in direction of liquid flow, it generally has a
One can be slidably driven in the coil an electromagnetic force spool, the spool in a different position, the solenoid valve passage
Is different. The working position of the spool several of the electromagnetic valve is called several solenoid valve: the valve interface,
Is the number of paths of the solenoid valve, through the intersection, called the solenoid valve solenoid valve.
Solenoid valve is installed, all interfaces should be connected to the so-called working position valve
The position of the core. The coil is not energized, the spool is in a position, in the B position when the coil is energized, the spool is in
Different positions, role play interface or on or closed.
The solenoid valve is a solenoid valve spool has two different working positions (ON, OFF).

pneumatic hand valve

Solenoid valve two-way, three-way electromagnetic valve body with two, three channel mouth;
For example, two two-way solenoid valve is entering a (two-channel, the most common and common)
Two three-way solenoid valve control liquid is entering two (two are normally open and one normally closed); pneumatic for
Is a solenoid valve into an exhaust; hydraulic entered an oil return.
These common sense understanding of the solenoid valve, I believe we got a better understanding of the electromagnetic valve. Solenoid valve
"Bit" refers to the working position of the spool, the "pass" refers to a passage on the valve body.

steam solenoid valves