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Valve
Aluminum alloy Electromagnetic Shut-off Valver Shield Manufacturer JYFJS-011 Series
Working Principle and Structural Diagram
This valve is a normally open shut-off valve with a holding control mode. It remains open without
power during normal operation and can automatically close upon receiving a shut-off signal. After
closing, it can be manually opened and will automatically close again upon receiving another
shut-off signal.
When a leakage accident occurs, the alarm system sounds an alert, instantly providing a DC pulse
voltage to the solenoid valve. The coil is energized, driving the valve to quickly close, cutting
off the gas source and entering a self-locking state.
When a gas leak occurs, the alarm's capacitor continuously releases a 3-second DC pulse voltage,
energizing the coil, closing the valve to cut off the gas supply, and entering a self-locking state.
The interaction of instantaneous electromagnetic force of the coil, permanent magnetic force, and
spring force is used to achieve pulse drive, automatic valve closing, and manual valve opening
self-holding functions.
| Serial Number | Area Name |
| 1 | Valve body |
| 2 | Diaphragm |
| 3 | Valve cover |
| 4 | Spring |
| 5 | Actuator |
| 6 | Reset Device |
| 7 | Dust cover |
| 8 | Moving iron core |
| 9 | Sealing ring |
Product Model and Main Parameters
|
Nominal size |
DN15 |
||
|
Model |
DRQF-15-0.1/KTLN (Aluminum straight-through valve) |
DRQF-15-0.01/KTLN (Aluminum angle valve) |
DRQF-15-0.1/KTLN (Copper straight-through valve) |
|
A(mm) |
60 |
42 |
60 |
|
B(mm) |
28 |
28 |
27 |
|
C(mm) |
85.5 |
84.5 |
85.5 |
|
D(mm) |
99.5 |
126.5 |
99 |
|
Connection method |
Rp1/2” internal thread (default), customized fittings are subject to the actual product. |
||
|
Rated flow (m3/h) |
1.8 |
2.5 |
1.8 |
|
Weight (g) |
156 |
173 |
228 |
| Explosion-proof type | Encapsulation type |
| Mold Release Agent | Nylon |
| Explosion-proof marking | Ex mb ⅡC T6 Gb |
| Explosion-proof Certificate No. | CQEx24.1641X |
| Rated voltage (frequency) | DC 12V pulse (capacitor discharge, 2A), continuous power-on time not exceeding 3s, interval time not less than 15s |
| Permissible power short-circuit current | 4A |
| Power | Static 0W, Operating 24W |
| Protection level | IP66 |
| Working medium | Natural gas and other non-corrosive gases |
| Maximum working pressure | 0.01MPa, 0.1MPa (see nameplate for details) |
| Opening method | Manual opening |
| Valve closing method | Capacitor pulse drive/manual |
| Ambient temperature | -20(-40)℃～+60℃ (see specific model) |
| Medium temperature | -20(-40)℃～+60℃ (see specific model) |
| Dielectric strength of solenoid valve | 500V |
| Encapsulation agent dielectric strength | 4000V |
| Cut-off time | < 1 second |
| Valve body material | Aluminum alloy, copper alloy, customizable 304 stainless steel |
| Sealing material | Nitrile rubber |
| Service life | 10 years (typical value) |
Installation Diagram (Dimensions: mm)
1. There are two ways to close the valve when it is in the open state:
① Provide the solenoid valve with an instantaneous DC pulse power (DC12V pulse) for about one
second, and the valve will close quickly.
② Press the red handle cap, the valve closes.
2. The red handle above the marking line indicates the open state.
3. When the valve is open, it may automatically close if subjected to strong vibrations, which is
a normal condition.
4. The electromagnetic coil (actuator) is detachable and can be removed or installed by rotating.
Non-professionals are prohibited from disassembling or installing it.
5. After the valve is shut off in an emergency, it must be manually checked and the fault cleared
before resuming ventilation.
6. When the valve is in the closed position, it can only be opened manually by pulling the red
handle upwards.
Unboxing and Inspection
Standard accessories: Product manual (1 piece), factory inspection report (1 piece), product
certificate (1 piece), mounting bracket (1 piece), installation accessories (1 piece).
Unboxing inspection: The product appearance has no scratches, the label is intact and clear, and
the accessories are complete.