The explosion-proof solenoid directional valve is a device that controls the flow direction of fluid through electromagnetic force. Explosion-proof WE6 series adopts a special explosion-proof design to ensure that it will not cause sparks or high temperatures in flammable and explosive environments, thereby avoiding explosions. This explosion-proof solenoid valve is mainly used to control the flow direction of fluids in hydraulic or pneumatic systems to meet the needs of different working conditions.
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Technical data |
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Fixing position |
Optional | |
| Environment temperature range (℃) | -30 to +50 (NBR seal) | |
| -20 to +50 (FKM seal) | ||
| Weight | Single solenoid (kg) | 2.6 |
| Double solenoids (kg) | 4.3 | |
| Max.operating pressure | Port P, A, B (bar) | 350 |
| Port T (bar) | 210 | |
| when the operating pressure exceeds the permission value, spool symbol A and B must make the port T for draining | ||
| Max. flow-rate (L/min) | 80 | |
| Flow cross section (switching neutral position ) | Version Q (mm2) | About 6% of nominal area |
| Version W (mm2) | About 3% of nominal area | |
| Fluid | Mineral oil suitable for NBR and FKM seal | |
| Phosphate ester for FKM seal | ||
| Fluid temperature range (℃) | -30 to +80 (NBR seal) | |
| -20 to +80 (FKM seal) | ||
| Viscosity range mm2 /s | 2.8 to 500 | |
| Degree of contamination | Maximum permissible degree of fluid contamination: Class 9. NAS 1638 or 20/18/15, ISO4406 | |
| Electrical data | ||
| Type of voltage | DC | |
| Available voltage (V) | 12, 24, 36, 110 | |
| Permissible voltage (deviation) % | -15 to +10 | |
| Input power (W) | 30 | |
| Operation mode of solenoid | Continuous working | |
| Switched time Accord with ISO 6403 | ON (ms) | 25 to 45 |
| OFF (ms) | 10 to 25 | |
| Switched frequency (times/h) | To 15000 | |
| Max. coils temperature (℃) | +150 | |
Features:
▶Directly operated type explosion protection directional valve is used as the standard type
▶DIN24 340 A type on the mounting surface ISO 4401
▶Wet-type DC explosion protection solenoid
▶90° rotatable explosion protection solenoid
▶Pressure-tight chamber does not need to be opened when coil is to be replaced
Application:
Explosion-proof solenoid directional valves are widely used in the field of petrochemicals. In the petrochemical industry, they are mainly used to control the flow direction of flammable and explosive media such as oil and natural gas.
WE type directional control valve is the directional valve of explosion protection solenoid used to control start, stop and flow direction of oil fluid.
The directional control valves consist of housing (1), one or two solenoids (2), the control spool(3), and one or two return springs (4).
In the de-energised condition the control spool (3) is held in the neutral or initial position by means of return springs (4) (except for pulse spools). The control spool (3) is actuated via wet pin solenoids (2).
To guarantee satisfactory operation care should be taken to ensure that the solenoid pressure chamber is filled with oil.
The control spool(3) is moved to the expected position by solenoid(2) and pushing rod(5), and this gives free flow from P to A and B to T or P to B and A to T.
When the explosion protection solenoid(2) is powered off, control valve element (3) is pushed to the initial position by reset spring (4).
Type 4WE6...61B/O.. (limited to functions A, C and D).
This type contains 2 switching positions and 2 directional control valves without locating mechanism explosion protection solenoid.
Type 4WE6...61B/0F... pulse valve (limited to functions A, C and D).
It contains 2 switching positions, 2 explosion protection solenoids and 1 directional control valve with locating mechanism. 2 switching positions are fixed separately, so it is unnecessary to continuously electrify explosion protection solenoid.
Cartridge throttle
The cartridge throttle is necessary since the actual flow may be larger than the performance limits of the valve during switching process.This cartridge throttle is inserted in the P channel of the directional control valve.
Structure of Explosion-Proof Solenoid Valve WE6 series
Symbols
Address
No. 27, Yangsha Road, Huilong Town, Qidong City, Jiangsu Province, China
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