High-Quality China JYFJS-011 Aluminum Alloy Electromagnetic Shut-off Valve - Gas Safety Solutions from Reliable Suppliers & Factory Manufacturers, Suppliers

Product Overview

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The JYFJS-011 gas emergency shut-off valve is manufactured by our factory in China, designed specifically for the safe and effective emergency shut-off of gas pipelines. This essential component can be seamlessly integrated with gas alarm systems, fire protection measures, and other intelligent control modules to enable both automatic and manual gas source shut-offs. By ensuring compliance with safety handling standards and gas incident response protocols, this valve plays a crucial role in maintaining gas safety in various applications.

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Application

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As a leading product from one of the top suppliers in China, this gas emergency shut-off valve is extensively utilized across industries such as petroleum, chemical, environmental protection, metallurgy, refining, gas distribution, biochemical medicine, and agriculture. Its versatile design and dependable performance make it an ideal choice for professionals seeking reliable gas safety solutions.

Product Description

Working Principle and Structural Diagram
JYFJS-011 (2)
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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.

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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.

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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.

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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.

JYFJS-011 (3)
Serial No. 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
Frequently Asked Questions
Q What is the normal operating state of this shut-off valve?
This valve is a normally open shut-off valve. In its default state without power, the valve remains fully open, allowing gas to flow through. It only closes upon receiving an electrical shut-off signal from the alarm system.
Q How does the valve respond when a gas leak is detected?
When a gas leak is detected, the alarm system triggers and the capacitor continuously releases a 3-second DC pulse voltage to the solenoid coil. This energizes the coil, which drives the valve to close rapidly and cut off the gas supply, then enters a self-locking state.
Q Can the valve be reopened after it has been closed by the alarm signal?
Yes. After the valve has been closed and entered a self-locking state, it can be manually reopened. However, upon receiving the next shut-off signal from the alarm system, it will automatically close again and re-enter the self-locking state.
Q What forces are involved in the valve's operating mechanism?
The valve operates through the interaction of three forces: the instantaneous electromagnetic force generated by the solenoid coil, the permanent magnetic force, and the mechanical spring force. Together, these enable pulse-driven automatic closing and manual-opening self-holding functions.
Q What type of electrical signal is used to trigger the valve closure?
The valve is triggered by a DC pulse voltage delivered from the alarm system's solenoid valve interface. The pulse lasts approximately 3 seconds and is sufficient to energize the coil and drive complete valve closure.
Q What are the main structural components of this valve?
The valve consists of 9 key components: the valve body, diaphragm, valve cover, spring, actuator, reset device, dust cover, moving iron core, and sealing ring. Each part works in coordination to ensure reliable gas shut-off performance and long-term durability.

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