Explore our premium industrial-grade gas safety valves, interlock boxes, and explosion-proof detection systems, custom-engineered for maximum response speed and reliability.
Our solutions encompass everything from physical emergency shutoffs to high-precision detection arrays, ensuring active threat isolation across all applications.
Precision sensing solutions designed to secure heavy industrial areas and remote petrochemical installations.
Continuous domestic and commercial safety networks protecting assets from leakage risks.
High-reliability, fast-acting emergency isolation shut-off valves for swift source control.
Smart city integration and pipeline system safety monitoring for distributed urban operations.
Integrating advanced electronic detection technology to transform invisible, critical gas risk profiles into real-time, actionable telemetry.
Founded in 2003, Xinhaosi has spent over two decades positioning itself as a reliable brand in the high-stakes gas safety industry. Our approach integrates design, materials science, and testing to produce valves and sensors that protect lives and infrastructure.
Our safety components secure everything from small-scale domestic installations to complex industrial production systems, hazardous petrochemical facilities, and municipal utility networks. Backed by modern manufacturing facilities and strict quality assurance, Xinhaosi delivers precise, dependable gas safety solutions to support a safer future.
More About UsCustom-engineered emergency shut-off valve configurations optimized for critical environments, high-flow pipelines, and demanding industrial conditions.
Industrial refineries require heavy-duty emergency shut-off valves capable of handling volatile compounds under extreme pressures and harsh operating conditions. Our valves feature explosion-proof ATEX-rated solenoid coils, SIL 2/3 functional safety ratings, and corrosion-resistant alloys that ensure dependable isolation during critical overpressure incidents.
Municipal networks require reliable remote shut-off valves to handle natural gas distribution over wide geographic grids. Our low-power, fast-response solenoid valves integrate with RTU telemetry systems, allowing operators to monitor pipelines and trigger isolation remotely using SCADA systems during pipeline ruptures.
In hotels, restaurants, and shopping centers, safety systems must link combustible gas sensors directly with emergency shut-off valves. We supply complete safety setups that automatically cut off the gas supply within milliseconds of detecting gas leaks, ensuring reliable protection against fire and explosion hazards.
A closer look at the technical specifications and build quality that make our natural gas safety valves the preferred choice for industrial engineers worldwide.
| Valve Attribute | Technical Specification Details | Engineering Benefit |
|---|---|---|
| Body Materials | Forged Brass, Cast Iron, Aluminum Alloy, Stainless Steel 304/316L | Prevents internal micro-porosity and ensures high resistance to mechanical stresses. |
| Operating Media | Natural Gas (Methane), LPG (Propane/Butane), Town Gas, Non-corrosive Gases | Versatile media compatibility across municipal, commercial, and industrial gas systems. |
| Closing Speed | Less than 1.0 second (<1s) response time upon electrical activation | Minimizes gas leakage during emergencies by rapidly isolating upstream pressure. |
| Sealing Material | High-performance NBR (Nitrile) / Viton (FKM) elastomer compounds | Ensures bubble-tight shutoff (Class VI leak rating) across wide temperature ranges. |
| Explosion-Proofing | Ex d IIC T6 Gb / ATEX / IECEx Certifications | Ensures safe operation in hazardous Zone 1 and Zone 2 explosive gas atmospheres. |
| Ingress Protection | IP65, IP66, and IP67 weather-proof construction options | Protects internal electromagnetic elements from harsh outdoor dust, water, and humidity. |
| Safety Integrity Level | SIL 2 Certified (SIL 3 Capable in redundant 1oo2 configurations) | Meets demanding global process safety guidelines for functional safety loops. |
Our natural gas shut-off valves utilize a manual reset, electromagnetic release mechanism. When linked to gas detectors, fire alarms, or remote emergency systems, the valve's electromagnetic coil initiates rapid closure in less than one second, arresting gas flow at the source.
Response Shutoff
Functional Safety
Ingress Protection
Helium Leak Tested
How Xinhaosi leverages automated production, lean manufacturing, and vertical integration to deliver high-quality products at competitive prices.
Our factory utilizes multi-axis CNC machining centers to maintain precise tolerances on valve bodies and internal sealing surfaces. This manufacturing precision minimizes mechanical wear, extends valve service life, and ensures consistent sealing performance across high-volume production runs.
Every natural gas shut-off valve undergoes shell pressure testing and seat leakage checks according to global safety standards. We perform automated optical inspections (AOI) on drive electronics and verify seal integrity using mass spectrometer helium leak detection before packaging.
By sourcing raw materials directly and keeping key manufacturing steps in-house, we protect our production schedules from external supply shocks. This vertical integration allows us to offer stable lead times and reliable global shipping, even during fluctuating market conditions.
Adapting to the growth of smart cities and industrial automation, gas safety systems are transitioning from passive components to active, connected network nodes.
We are expanding the functionality of traditional safety valves by integrating low-power communication interfaces, converting them into active, self-diagnostic network components.
The next generation of gas safety systems will focus on deep integration with broader smart city and industrial IoT networks. Industrial facilities and municipal distributors need real-time data on system health, coil temperatures, and mechanical cycles to move toward predictive maintenance strategies.
Xinhaosi's R&D team is building IoT-enabled solenoid controllers that support wireless communication protocols like NB-IoT, LoRaWAN, and Zigbee. These smart devices allow operators to track valve position, monitor coil resistance, and receive real-time alerts on line health, helping isolate piping systems before leaks can develop.
Ensuring compliance with local installation codes, electrical certifications, and pressure equipment directives across global jurisdictions.
Deploying natural gas safety equipment globally requires compliance with regional safety rules, gas appliance directives, and local installation standards.
Our natural gas shut-off valves and detection systems are certified under relevant regulatory frameworks. We maintain ISO 9001 quality management, ATEX and IECEx explosion-proof certification for electrical coil assemblies, and SIL-2 capability for high-reliability process loops.
We work closely with global engineering contractors and procurement teams, providing complete technical documentation, step-by-step installation guides, and certified drawings to streamline project approval processes.
Get answers to common technical, installation, and procurement questions from our veteran gas safety engineering team.
A manual reset gas solenoid valve is designed specifically for high-integrity safety applications. When a leak is detected, the sensor cuts power to the valve, releasing a latch mechanism that shuts the valve in under one second. The valve remains closed even if power is restored. It can only be opened manually by a technician on-site once the leak is resolved. Automatic reset valves, on the other hand, open as soon as they are energized, which could lead to accidental gas release if safety issues remain unresolved. This makes manual reset valves the preferred option for safety-critical shutoffs.
For standard low-pressure commercial applications, lightweight aluminum alloy bodies provide an excellent balance of durability and value. For high-pressure settings, municipal pipelines, and offshore platforms, forged brass, cast steel, or 316 stainless steel are required to handle higher physical and environmental loads. In terms of seals, NBR (Nitrile) is widely used for natural gas and LPG due to its high resistance to hydrocarbons and mechanical wear. For higher temperature ranges or specialized gases, Viton (FKM) seals are preferred to ensure zero leakage.
Our solenoid valves connect easily with external control systems using a low-voltage electrical signal (typically 24VDC, 110VAC, or 220VAC). During an emergency, a gas leak detector, fire panel, or emergency stop button cuts the supply power or sends a trip signal to the valve's electrical coil. This cuts the magnetic force and closes the valve. Feedback switches can also be integrated to send the valve's status (open/closed) back to the building control room.
Sizing gas shut-off valves requires calculating the pipeline flow rate, inlet pressure, and allowable pressure drop. Oversized valves are less efficient, while undersized valves cause high pressure drops that can starve downstream equipment. We supply Kv and Cv flow coefficients for all valve sizes, helping design engineers choose the right model to maintain stable system pressure.
Every natural gas shut-off valve we build is tested to meet international standards. We perform seat leakage and body shell tests on every production unit to ensure zero leakage. We also cycle the electrical solenoids repeatedly to verify reliable operation, and test every electrical component to ensure it meets insulation standards.
Keep up with our latest product launches, global trade exhibitions, and insights into the evolving landscape of gas safety technology.
Xinhaosi Electronic Detection Technology Co., Ltd. has released its new Handheld Uncooled Infrared Gas Leak Detector. Featuring optical technology, quick response, and long-range non-contact detection, it enhances safety across petrochemical plants, cold storage systems, and industrial sites.
XINHAOSI recently attended the 5th Western China Cross-Border E-Commerce Expo in Chengdu. The event connected global buyers, manufacturers, and supply chain companies, opening up new avenues for international cooperation and distribution.
XINHAOSI participated in the 2026 Sichuan (Chengdu) – Indonesia Industry Matchmaking Conference. The event gathered businesses from China and Indonesia to build partnerships and explore growing market opportunities in Southeast Asia.
We work with global utilities, EPC contractors, and safety companies to deliver reliable protection across diverse industries.
Complete your facility safety setup with our specialized household detectors, heavy-duty industrial valves, and interlock controllers.
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