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.
In B2B industrial engineering, Normally Closed (NC) Solenoid Valves represent the gold standard of fail-safe protection. An NC valve remains in a closed position through return spring pressure when de-energized, halting flow completely to prevent downstream leaks, accumulation, or hazardous discharge. Upon receiving electrical power, the solenoid coil generates an electromagnetic field that overcomes the spring tension, lifting the plunger and opening the flow channel. This mechanism is critical in emergency shut-off systems, petrochemical lines, and municipal gas grids, where sudden power failure must immediately isolate potentially explosive or toxic fluids.
As a leading national standard drafting organization for solenoid valves in China, Xinhaosi brings unparalleled E-E-A-T credentials to the B2B marketplace. We understand that selecting a vendor for NC solenoids isn't merely about buying a component; it is about mitigating operational risk, achieving strict regulatory compliance, and guaranteeing continuous field operation under hostile conditions. Our product formulations emphasize material thickness, high-grade magnetic alloys for coils, and optimized elastomer seating (NBR, Viton, or FKM) designed to resist chemical erosion and extreme temperature swings.
Safety Integrity Levels (SIL 2 & SIL 3 loops) require control components that default to a safe state. A normally closed valve is naturally suited for this framework because any physical interruption—such as power loss, cable rupture, or system trip—automatically forces the valve to seat firmly, preventing any volatile gas bypass. This safety philosophy is applied across global industries to isolate storage tanks, control burner manifolds, and safeguard gas supply headers. Xinhaosi’s engineering team specializes in tailoring coil response parameters to align with emergency trip windows, preventing pressure surges in upstream loops during rapid closures.
We supply coils in standard voltage levels (24VDC, 110VAC, 220VAC) with specialized moisture-resistant, explosion-proof encapsulation (Ex d IIC T6). Perfect for offshore and chemical processing facilities.
Our products conform to SIL 2 and SIL 3 criteria, offering a calculated Probability of Failure on Demand (PFD) that satisfies stringent plant risk analysis (HAZOP) guidelines.
Utilizing patented monitoring technologies, our intelligent solenoids integrate internal sensors to cross-reference flow rate with plunger position, flagging diagnostic anomalies immediately.
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.
The global industrial valve market demands a delicate balance between fiscal feasibility, technical longevity, and logistical promptness. Procuring high-quality normally closed solenoid valves from Xinhaosi’s state-of-the-art Chinese factories (located in Chengdu and Deyang) delivers specific competitive advantages:
By leveraging concentrated domestic raw-material supply networks in Sichuan (high-grade casting metals, specialized electronic components, high-quality copper windings), we offer premium quality at optimized price points.
Our automated production facilities in Deyang enable lead times of 2 to 4 weeks for massive custom orders, compared to Western suppliers that frequently exceed 12 to 16 weeks.
We supply engineering-level documentation, certified material trace sheets, pressure testing reports, and custom flange drillings that perfectly fit global systems (ANSI, DIN, JIS standards).
Safety environments present varied operating challenges. Xinhaosi’s normally closed valves are engineered with localized parameters tailored for distinct deployment scenarios:
| Industry Sector | Environmental Factors | Solenoid Valve Specifications | Target Fluid / Gas |
|---|---|---|---|
| Petrochemicals | Corrosive atmospheres, high risk zones | Explosion-proof Ex d IIC T6, IP67 Protection, SS316 body | Natural Gas, LPG, Corrosive Vapors |
| Metallurgy & Steel | High ambient temperatures, continuous heat cycle | Class H coil insulation (up to 180°C), Viton seating | Blast Furnace Feed Gases, Oxygen lines |
| City Gas Distribution | Outdoor exposure, high humidity | Flanged connections, IP68 waterproofing, automatic latching | Natural Gas, Propane, Butane mixes |
| Automotive & Manufacturing | High cycling frequency, low tolerance for latency | Direct-acting, fast response time (<50ms), NBR seal | Compressed Air, Inert purging gases (N2, Ar) |
The industrial flow control sector is currently undergoing a rapid transformation. The convergence of IoT networks, edge computing, and real-time monitoring is shifting solenoid valves from basic mechanical actuators to smart edge devices. B2B buyers must prioritize long-term system architecture by seeking out forward-compatible equipment.
1. IoT Integration and Smart Diagnostics: Modern control architectures rely heavily on predictive data. Integrating micro-sensors inside the solenoid body allows operators to monitor coil core temperature, coil resistance shifts, vibration patterns, and cycle counts. This data helps identify potential failure modes (e.g., armature binding, winding breakdown) before a system failure occurs.
2. Flow-Monitoring Integration: The integration of real-time differential flow tracking inside the valve structure prevents the cost and bulk of independent downstream meters. Xinhaosi's patented flow-monitoring technology simplifies system design, enabling a single device to execute bubble-tight shut-off while transmitting live flow telemetry to central SCADA platforms.
3. Energy Efficiency & Low-Power Coils: Traditional continuous-duty AC/DC coils consume consistent energy, generating significant heat that ages insulation components. Next-generation valves use low-power holding currents (employing power-reduction circuits) to maintain open status with up to 75% less power consumption, prolonging component lifespan and lowering overall operating costs.
Established April 17, 2003. Launched the first generation of gas leak alarm and fire fighting systems, laying down the groundwork for high-precision gas control technologies in Chengdu.
Initiated production of gas safety valves, significantly growing our OEM footprint globally. Relocated our corporate offices to the Longtan Industrial Park to consolidate research, assembly, and sales teams.
Achieved 10 million units in gas detector sales. Moved to our modern Chengdu manufacturing facility, completing our comprehensive sales and support network across major domestic industrial corridors.
Launched our self-developed IoT safety platform. Introduced automatic fire alarms, emergency lighting, and exit routing systems. Recognized as an official partner to China's top five major gas suppliers.
Began construction of the Deyang Factory. Established the Petrochemical & International Business Division to service overseas B2B clients directly. Awarded the title of Sichuan Provincial Technology Center.
Deyang smart manufacturing complex begins operation. Rolled out our urban gas pipeline monitoring products, high-security wireless detectors, and AI-enabled solenoid valves featuring autonomous leak detection.
