1, lead type explosion-proof solenoid valve wiring method:
What is a lead-type explosion-proof solenoid valve, the lead-type means that a power line is drawn from the inside of the explosion-proof coil housing, the length of the lead is generally about 1.5 meters, and some of the outgoing lines can be extended, then how to wire the lead-type explosion-proof solenoid valve, The lead is a three-core wire: the three cores are divided into yellow, red, (green/black/blue) colors (yellow is the ground color, red and green/black/blue is the power cable) power supply is not positive or negative.
2, connector type explosion-proof solenoid valve wiring method:
asco explosion-proof solenoid valve connector means that there are three ports inside the explosion-proof coil housing, the port is divided into two power cables, a ground wire, and the connector type field wiring can directly introduce the standard wire directly into the explosion-proof coil housing.
After the electromagnet is energized, the connecting rod is advanced and begins to roll with the rotating shaft, which acts on the pilot valve and opens the main valve; After power off, under the action of armature weight and return spring, the upper pilot valve is half, and after the pilot valve is closed, the main valve is closed by pressure difference.
Normally closed: when the coil is energized, the pilot spool is sucked, the pilot hole is opened, the pressure is relieved on the valve, the piston is pushed by the medium pressure in the lower chamber, and the solenoid valve is opened. When the coil is powered off, the pilot spool is reset by the spring, the pilot hole is closed, the upper chamber of the valve is saved by the piston hole pressure and the thrust of the reset spring, and the valve is closed.
Normally open: When the coil is energized, the pilot hole is closed, the upper chamber of the valve is saved by the piston hole pressurization and the thrust of the reset spring, and the solenoid valve is closed. When the coil is powered off, the pilot spool is reset by the spring, the pilot hole is opened, the pressure relief of the upper chamber of the valve, the piston is pushed by the medium pressure of the lower chamber, and the solenoid valve is opened.
Instructions for High temperature solenoid valve installation
1, before the installation of the solenoid valve:
(1) Please read this manual and check the type and specification of solenoid valve;
(2) Flushing the pipeline.
2, the direction of the solenoid valve device: the direction of the medium flow should be the same as the direction of the arrow on the valve body; The solenoid part should be straight up.
3. Do not install the valve in the low recess of the pipeline to avoid the obstruction of action due to the deposition of steam condensate and impurities in the valve.
4, this valve can not be used in the danger of explosion.
5, the solenoid valve device should leave a certain space for heat dissipation and daily maintenance and regular maintenance.