High-Quality Shut Off Main Gas Valve Factories & Factory

Decentralized Safety Control Systems, CNAS-Accredited Smart Actuation, and Industrial IoT Gas Solenoid Interlock Networks for Global Enterprise Safety Infrastructure.

Leading Global Manufacturer of Intelligent Gas Control Devices

Founded in 2003, Xinhaosi is one of the most influential and trusted brands in the global gas safety industry. Over the past two decades, we have steadily built a robust and comprehensive production and service system, which integrates cutting-edge R&D, intelligent manufacturing with advanced automation equipment, digital marketing across global channels, professional after-sales support with an experienced technician team, flexible OEM/ODM services, as well as CNAS-Accredited laboratory calibration services that meet international standards.

Our diversified product portfolio covers industrial & residential gas detection & alarm systems, industrial & household gas solenoid valves, and urban gas pipeline network monitoring systems—all engineered to adapt to complex working environments and strict safety requirements. We produce and sell tens of millions of units annually, catering to a wide range of industries that demand reliable gas detection solutions, including oil & gas exploration and production, petrochemicals, urban gas distribution, automotive manufacturing, pharmaceuticals, new energy, steel production, and beverage processing.

Guided by the core mission of "Making Gas Safety Accessible Everywhere," we consistently deliver high-performance, reliable products and customized solutions tailored to each client's unique needs. Every item we manufacture undergoes rigorous quality control tests, and every service we provide is backed by our professional technical team, fully embodying our unwavering commitment to safeguarding gas safety across both industrial workplaces and residential environments, and striving to build a safer world with sustainable gas safety technologies.

Technical Strength Laboratory

Unmatched Technical Strength & Patent Architecture

Adhering to ISO9001 quality management system standards, Xinhaosi's core products have obtained a full range of authoritative certifications, including national compulsory Products Certification, explosion-proof certification, fire product certification, CPA measurement instrument type approval certificate, and international approvals such as CE and SIL. Additionally, Xinhaosi holds honors such as "National Quality Integrity Benchmark Enterprise" , "National Quality Leading Enterprise in the Gas Alarm Industry," member of the China Fire Protection Association, and the main drafting organization for the national standard of solenoid valves, further confirming its industry influence and reputation.

In the field of intellectual property, Xinhaosi has built a robust innovation system with over 50 patents and software copyrights. These patents cover core technological areas, including a graphical monitoring system for gas detection and alarm, which enables predictive maintenance based on historical data to reduce equipment failure rates by over 30%, and a solenoid valve with flow monitoring functionality that integrates flow detection and alarm capabilities. The company also pioneered China's first networked bus-type gas leakage monitoring system and the only maximum-point gas leakage monitoring system certified by the Ministry of Public Security, demonstrating its leading position in cutting-edge technological research.

Our in-house laboratory is accredited by the China National Accreditation Service for Conformity Assessment (CNAS), recognized both domestically and internationally under the ILAC-MRA framework. It operates in accordance with ISO/IEC 17025, the international standard for testing and calibration laboratories. It provides reliable and traceable testing services for gas detection and alarm products, solenoid valves, and related safety equipment. Test reports issued by the CNAS-accredited laboratory are widely accepted by regulatory authorities, certification bodies, and customers in China and overseas, helping to ensure product quality, safety compliance, and market access.

20+

Years of Engineering Excellence

50+

Patents & Intellectual Software Copyrights

30%

Reduction in Equipment Failure Rates

Millions

Annual Production Capacity

Technical Roadmap & Future Outlook

Pioneering the next generation of smart gas containment through predictive analytics, edge computing, and ultra-reliable low-power actuation.

AI-Powered Actuation

Integrating microprocessors and flow sensors inside the valve body allows real-time diagnostics. Valves can auto-detect internal mechanical drag, seal deterioration, and micro-leaks before they manifest as critical failures. Our target is predictive maintenance alerts sent via cloud networks weeks before failure.

IoT & Cloud Integration

By leveraging Narrowband IoT (NB-IoT) and LoRaWAN wireless architectures, the future main gas shut off valves communicate status parameters to centralized safety dashboards. Industrial users monitor system pressure, temperature, and cycle counts globally across multiple facilities simultaneously.

Seismic & Thermal Auto-Trip

Implementing mechanical micro-pendulums and shape-memory alloy triggers directly within the valve architecture. In the event of high-intensity seismic vibration (earthquakes) or ambient temperatures exceeding 70°C, the valve initiates automatic physical shutdown independently of electrical power supplies.

Macro Industry Solutions

Engineered safety infrastructures designed to integrate seamlessly across municipal, industrial, and high-density residential networks.

Urban Pipeline Networks

Municipal networks require real-time pressure regulating skids and line break valves. Our networked bus systems link heavy industrial shut off valves to municipal SCADA centers, providing rapid shutdown zones when pressure drops are identified, minimizing pipeline explosion hazards across metropolitan grids.

Petrochemical & Refinery Complexes

Processing facilities present explosive atmospheres. Our explosion-proof solenoid shut-off valves and SIL-certified gas detector networks operate in Zone 1 and Zone 2 environments. Constructed with cast steel or SS316, they withstand corrosion, extreme high pressures, and chemical solvents.

Commercial & Smart Buildings

Residential high-rises and kitchens depend on automatic shut-off systems linked to local gas sensors. Our household solenoid valves (like the XF2 Series) connect with smart combustible gas detectors. Upon detecting micro-leaks, they output immediate DC electric pulses to cut off the main supply lines instantly.

China Factory 4.0: Supply Chain Resilience & Efficiency Advantages

Located within the industrial hubs of Chengdu and Deyang, Xinhaosi operates two smart manufacturing bases with combined automation capabilities. We have integrated advanced manufacturing practices to ensure production consistency, offering global buyers significant economic and logistics advantages:

  • Automated Production & Assembly: Intelligent winding systems for electromagnetic coils and robotic assembly platforms eliminate human variation, achieving zero-defect production metrics.
  • Complete Vertical Integration: From in-house die casting and precision CNC machining of valve bodies to electronic circuit board assembly (SMT) and calibration, our end-to-end control keeps lead times stable.
  • High-Throughput CNAS Inspection: Automated testing lines examine every single solenoid valve under pressure for seal integrity, electrical insulation resistance, and response speed before shipping.
  • Flexible OEM/ODM Delivery: With a daily capacity exceeding tens of thousands of gas detection and actuation components, we customize connection sizes, materials, voltages, and branding with short turnaround windows.
China Factory 4.0 Smart Manufacturing

Global B2B Procurement Selection Checklist

Ensure regulatory compliance, longevity, and operational safety by verifying critical parameters prior to bulk imports.

Technical Parameter Standard Specifications Selection Considerations
Valve Body Materials Forged Brass, Cast Aluminum, Cast Steel, Stainless Steel (304/316) Brass for light residential; Aluminum/Stainless Steel for industrial process gas.
Response Time < 1 Second (Ultra-Fast Shutdown) Fast closing is critical to prevent hazardous gas volume releases.
Actuation Mechanism Electrical Pulse (DC 9V-12V) / Manual Pull Reset Requires manual intervention to restart gas flow after safety trips.
Explosion Protection Ex d IIC T6 Gb (Flameproof) Mandatory for hazardous areas like gas stations, refineries, and chemical plants.
Certification Standards CNAS, SIL 2/3, CE, GB15322, CPA Guarantees legal entry, market compliance, and functional liability coverage.
Localized Support and Compliance Teams

Global Compliance & Localized Technical Support

Safety equipment requires strict alignment with localized regulations. Import controls, building safety codes, and occupational safety acts differ between regions. Xinhaosi helps simplify this process for international purchasers:

  • Traceable Testing: Our ISO/IEC 17025 CNAS certified calibration lab issues test reports recognized internationally via the ILAC-MRA framework, streamlining regional customs clearances.
  • SIL Ratings: High-risk industrial applications rely on SIL-2 and SIL-3 safety loops. Our solenoid valves and interlock systems are engineered for high diagnostic coverage and low probability of failure on demand.
  • Global Engineering Support: We assist engineering procurement companies with detailed CAD models, wiring schematics, and fluid dynamic performance profiles to ensure smooth system integration.

Our Journey & Milestones

A history of innovation in gas safety technologies, scaling from a startup to a global factory partner.

2003 - 2008

Company Inception & Startup Phase

Established on April 17th, 2003. We launched our first generation of gas leak alarms and basic fire fighting system components, positioning ourselves in the early domestic safety monitoring market.

Xinhaosi Inception
2009 - 2012

Valve Production Scale-Up

Initiated dedicated safety shut off valve manufacturing. We expanded our OEM supply division and relocated headquarters to the Longtan Industrial Park to meet rising production demands.

Production Expansion
2013 - 2016

Rapid Market Expansion

Achieved 10 million units sold milestone. Relocated to the newly built Chengdu Factory, finalized a nationwide service network in China, and introduced fire power monitoring systems.

Market Growth
2017 - 2020

IoT & Industrial Integration

Launched our in-house IoT cloud safety platform. Awarded the High-Tech Enterprise status and became a qualified supplier for China's top five gas companies.

IoT Integration
2021 - 2023

Global Business Units & Provincial Center

Broke ground on the Deyang manufacturing facility. Established dedicated Petrochemical & International Business Divisions, and recognized as the Sichuan Provincial Technology Center.

Global Expansion
2024 - Future

Next-Gen Infrastructure Solutions

Deyang complex becomes fully operational. We launched our urban pipeline monitoring products, wireless detection devices, and AI-enabled safety shut off main gas valves.

Future Safety Valves

Industrial FAQ: Shut Off Main Gas Valves

Get answers to technical, engineering, and compliance questions regarding shut off main gas valve configurations.

What are the key advantages of solenoid shut off valves over motorized ball valves? +
Solenoid shut off valves close rapidly, typically in under one second, by using electromagnetic springs. This makes them ideal for emergency situations. Motorized ball valves have longer cycle times (usually 5 to 15 seconds), which can allow more gas to escape during leaks. Solenoid systems also offer a fail-safe manual-reset function, ensuring gas flow cannot restart automatically until the site has been safely inspected.
How does the CNAS lab accreditation benefit international buyers? +
Our CNAS-accredited lab operates in accordance with the ISO/IEC 17025 standard. Testing reports issued under this framework carry international traceability, helping streamline compliance reviews and safety approvals with regulatory bodies worldwide.
What material selections are recommended for aggressive refinery or offshore environments? +
For corrosive atmospheres, SS316 or SS304 stainless steel is recommended to prevent pitting and oxidation. We also offer specialized protective coatings and flameproof coil enclosures (Ex d IIC T6 Gb) to isolate electrical components from flammable gases.
Can these safety valves integrate with third-party alarm controllers? +
Yes. Our solenoid shut-off valves utilize standard electrical pulse triggers (typically DC 9V-12V, 1.5A). They connect easily with third-party PLC platforms, DCS industrial controls, and residential gas safety alarms.
What is the service lifetime and maintenance schedule for a main gas shut off valve? +
Under standard operating conditions, our valves are rated for up to 5-10 years of service. We recommend monthly manual trip tests and annual seal inspections to verify internal elastomer integrity and mechanical responsiveness.