Two-position three-way or five-way solenoid valve overview
In the gas line (or liquid line), two-position three-way solenoid valves with one air intake (connecting intake air source), one out stomata (gas supply is available to the target device), one discharge port (usually install a muffler, if not afraid of noise, then you can not install). Two-position five-way solenoid valve with one air intake (connecting intake air source), one positive action and one reaction vent holes (respectively provide to the target device with positive and negative movements of the gas supply), one positive action and one anti-vent action (install muffler). For small automatic devices, the pipe generally use 8 ~ 12mm industrial plastic pipe. In electrical terms, two-position three-way solenoid valve is usually a single electronic control (ie, single-coil), two-position five-way solenoid valve is normally double-controlled (ie, double-coil). Coil voltage level commonly uses DC24V, AC220V and so on. Two-position three-way solenoid valves are divided into two normally closed and normally open type two kinds. Normally closed-type coil refers to the gas line is off when power off, normally open-type coil refers to the gas line is connected when power off. Normally closed two-position three-way solenoid valve acting principles: give electricity to coil, gas line connected, once the coil power off, gas line will be disconnected, which is equivalent to "point move." Normally Open Type two-position three-way single electronically controlled solenoid valve action principle: give electricity to coil, gas line disconnected, once the coil power off, gas line will be connected, which is also "point move." Two-position five-way double controlled solenoid valve action principle: power on the coil, then the gas line is connected to action (positive action out of a vent gas), even after power off the positive action will also act and it will be maintained until the power up to the counter-action coil. power on to counter-action, then the gas line anti-actions connect (reactionary make pores are gas), even if the coil moves to the counter -action gas path after the power off is still connected, and will be maintained until the power to the coil until the action is being . This is equivalent to "self-locking." Based on this feature of two-position five-way double-control solenoid valve, when design mechanical and electrical control circuit or the preparation of PLC program, we can let the solenoid valve coil move 1 or 2 seconds, and this can protect the solenoid valve coil is not easy to damage .
