Explore our highly integrated range of household and industrial safety control accessories, detectors, and automatic shut-off systems.
Chengdu Factory & Office
Deyang Factory
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.
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 as CE, 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.
Standard Certification Unit
Why 2-inch sizes represent the critical threshold for commercial gas supply pipelines and large flow industrial systems.
A 2-inch (DN50) aperture ensures minimal pressure drops across the valve. This capacity is vital for medium-pressure pipelines servicing district heating facilities, large industrial kilns, and multi-appliance commercial kitchens.
Fitted with instant-release electromagnetic mechanisms, these valves shut down in less than 1 second upon receiving feedback signals from combustible gas detector systems or fire panels, sealing pipelines instantly.
To prevent secondary accidents, our 2-inch gas valves feature manual reset controls. After an automatic trip event, the valve can only be re-opened manually once safety engineers confirm the gas leak has been fully mitigated.
| Parameter Details | Direct-Acting DN50 Solenoid Valve | Pilot-Operated 2 Inch Valve | Semi-Direct Lift Gas Valve |
|---|---|---|---|
| Minimum Working Pressure | 0 Bar (No pressure required) | 0.5 Bar (Needs pressure differential) | 0 Bar (For absolute low-pressure networks) |
| Shut-Off Velocity | < 0.5 Seconds | 1.0 - 2.0 Seconds | < 1.0 Seconds |
| Power Consumption | Higher Holding Current | Extremely Low Coil Draw | Medium Energy Efficiency |
| Media Application | LPG, Natural Gas, Town Gas, Methane | Filtered Gases & Clean Liquids | Highly Variable Gas Densities |
| Primary Scenario | Commercial Kitchen Safeties | Petrochemical Transport Pipelines | Urban Main Gas Station Inputs |
How our localized production ecosystems in Chengdu and Deyang deliver unparalleled value to global procurement professionals.
By producing both copper-wire coils, cast bodies (brass, cast iron, and aluminum alloys), and executing CNC machining within the Sichuan manufacturing hubs, we reduce logistical waste. This vertical integration allows us to keep our pricing highly competitive while offering customized modifications for thread types (NPT, BSPT, Flanged) and voltage tolerances (AC220V, DC24V, DC9V-12V impulsed).
Our Deyang factory houses state-of-the-art automated testing benches. Each 2-inch solenoid valve undergoes strict hermetic integrity tests, shell pressure tests, and electromagnetic response trials before leaving our facility. This continuous quality control strategy is why we achieve a near-zero RMA rate for international shipments.
As a leading drafting organization for China’s gas safety valve national standards, we do not just follow regulations—we write them. Our engineering department can adapt standard structures to custom parameters, matching global client specifications for extreme temperatures (-20°C to +60°C) and corrosive media requirements.
We provide full white-label packaging, customized laser-etched nameplates, bespoke coil housings (standard plastic injection molded or heavy-duty explosion-proof Ex d IIC T6 metal enclosures), and custom warning horn integrations directly configured to match local market regulations.
The shift toward active pipeline safety, digitalization, and integration with building automation environments.
As global energy infrastructures transition to hydrogen blending, solenoid valves must be configured to prevent hydrogen embrittlement. We are researching and formulating specialized synthetic elastomer seals and corrosion-resistant alloys capable of dealing with high-purity hydrogen-blended natural gas.
Traditional solenoid valves acted as passive execution components. Today's industrial setups integrate valves with IoT controllers that report real-time coil health, open/close cycle counts, and pipeline flow conditions, warning operators of potential sticking or pressure drops before system failures occur.
Modern petrochemical layouts mandate intrinsically safe or flameproof components. The industry is rapidly adopting pulse-controlled latching valves which consume power only during transitions (opening or closing), eliminating coil heating issues and lowering the carbon footprint of critical infrastructure.
Commercial & Smart Building Solutions: For major commercial kitchen installations, multiple gas sensors are placed at key detection nodes. In the event of a leak, the central controller commands the 2-inch master solenoid valve to shut down the building's gas supply, while simultaneously activating roof ventilation systems and transmitting alarm notifications to building management systems via Modbus or BACnet protocol.
Municipal and Utility Protection: In city-gate stations and pressure-reducing skids, large-scale solenoid valves serve as the last line of defense against overpressure scenarios. Operating alongside safety relief valves, our industrial solenoid units isolate municipal distribution grids in fractions of a second during seismic alerts or sudden pipe ruptures.
Petrochemical and Refinery Safety: In hazardous manufacturing areas, explosion-proof components are standard. By implementing our ATEX-ready and SIL-certified explosion-proof valves, processing plants manage volatile organic compounds (VOCs) and combustible gases safely, assuring compliance with rigorous international safety regulatory schemes.
Over two decades of engineering excellence, scaling from local operations to a dominant global safety manufacturer.
Expert technical insights regarding configuration, certification, operations, and procurement of 2-inch solenoid valves.
Complete your pipeline safety setup with matching gas control systems, detection nodes, and audible alarms.
