4/3, 4/2 and 3/2 explosion-proof solenoid directional valve
Type G...WE10...L3X
Features
– Directly operated type explosion-resistant solenoid operation
direction slide valve is used as the standard type
– DIN24 340 A type on the mounting surface ISO 4401 and CETOP-RP
121H
– Wet-type DC explosion protection solenoid
– 90° rotatable explosion protection solenoid
– Pressure-tight chamber needs not to be opened when coil is to be
replaced
Function and configuration
GWE 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-energized 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 GWE 10 . L3X / O B2...
(Limited to valve element A, C and D)
This type is dual explosion-resistant solenoid 2-position
directional valve without a locating mechanism, one of explosion
protection solenoids must be powered on in any position, it has not
a specific switching position under power-off position.
Type GWE 10 . L3X / OF B2...
(Limited to valve element A, C and D)
This type is dual explosion-resistant solenoid 2-position
directional valve with a locator, the valve element can be held at
any position and it is unnecessary to continuously electrify the
solenoid.
Cartridge throttle
The cartridge throttle is necessary since 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.
Specification
Note: G1 Explosion protection grade EX d Ⅰ Mb; G2 Explosion protection
grade EX d Ⅱ C T4 Gb
Spool symbols
Technical data
| Fixing position | Optional |
| Environment temperature range | ℃ | -30 to +50 (NBR seal) |
| -20 to +50 (FKM seal) |
| Weight | Single solenoid | kg | 5.9 |
| Double solenoids | kg | 8.9 |
| Max.operating pressure | Port P, A, B | bar | 315 |
| 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 | 120 |
| Flow cross section (switching neutral position ) | Version V | mm2 | 11(A/B→T); 10.3(P→A/B) |
| Version W | mm2 | 2.5(A/B→T) |
| Version Q | mm2 | 5.5(A/B→T) |
| 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 voltages | V | 12, 24, 36, 110 |
| Voltage tolerance (nominal voltage) | % | -15to+10 |
| Power consumption | W | 35 |
| Duty cycle | Continuous |
| Switching time to ISO 6403 | ON | ms | 45 to 60 |
| OFF | ms | 20 to 30 |
| Switched frequency | times/h | To 15000 |
| Protection class according to DIN 40050 | | IP65 |
| Max. coils temperature | ℃ | +150 |
Caution: with electrical connections the protective conductor (PE) must be
connected according to the relevant regulations.
Unit dimensions (Dimensions in mm)
1 Dimensions of 3-position valve
2 Dimensions of 2-position valve, solenoids at end A
3 Dimensions of 2-position valve, solenoids at end B
4 R-shaped ring 13×1.6×2 or O-ring 12×2
5 Explosion protection solenoid
6 Copper nameplate
7 End cap used for 1 electro solenoid valve
8 Fix additional port TB on the manifold when necessary.
9 Valve fixing screws: M6×40 GB/T 70.1-10.9,
Tightening torque, MA=15.5Nm, must be ordered separately.
It must be ordered separately, if connection plate is needed
Type:
G66/01(G3/8); G66/02(M18×1.5)
G67/01(G1/2); G67/02(M22×1.5)
G534/01(G3/4); G534/02(M27×2)
