Chengdu Factory & Office
Deyang Factory
Founded in 2003, Xinhaosi has established itself as one of the most influential and trusted brands in the global gas safety industry. Over the past two decades, we have systematically engineered a robust and comprehensive production and service ecosystem. This ecosystem integrates cutting-edge R&D, intelligent manufacturing driven by advanced automation, digital global marketing, highly professional after-sales technician support, flexible OEM/ODM partnerships, and CNAS-Accredited laboratory calibration services conforming to international guidelines.
Our extensive portfolio encompasses industrial and residential gas detection and alarm systems, industrial and household gas solenoid valves (particularly focusing on optimized 2-inch and customized utility valves), and urban gas pipeline network monitoring systems. Engineered to perform under harsh operating conditions, our solutions are adopted in oil & gas exploration, petrochemical refinement, urban gas distribution, metallurgy, new energy, pharmaceuticals, and manufacturing. Annually, we manufacture and distribute tens of millions of safety units globally, upholding our foundational mission: "Making Gas Safety Accessible Everywhere."
The industrial flow control landscape is undergoing a massive shift towards automation, intelligence, and integration. Within this evolution, the 2-inch valve (DN50) occupies a vital niche. As a transitional size between low-flow branch pipelines and heavy main headers, the 2-inch gas valve serves as the backbone of modern commercial gas systems, petrochemical processing lines, and emergency shutoff hubs. Historically, mechanical gate, ball, or globe valves of this size required manual operation or basic pneumatic control. Today, global safety demands mandate electromagnetically triggered solenoid shutoff mechanisms, explosive atmosphere certifications, and real-time operational feedback loops.
OEM 2-inch gas valves must satisfy extreme regulatory requirements. When dealing with hazardous media like methane, propane, liquefied petroleum gas (LPG), or hydrogen, the valve is no longer just a fluid regulator; it is the ultimate barrier against catastrophe. The industry now trends towards intelligent solenoid systems that integrate with ambient gas monitors. If a gas sensor registers combustible concentration thresholds, it instantly transmits a low-voltage pulse to the solenoid valve, sealing the pipeline in under one second. Achieving this speed and reliability at a 2-inch nominal size requires precise machining, optimized magnetic flux calculations, and robust anti-corrosion engineering.
Advanced solenoid coils generate immediate magnetic kinetic force to trigger the latching mechanism, forcing the valve shut in < 1 second to arrest gas leaks instantly.
Engineered with cast aluminum alloy or heavy forged bodies, with IP65/IP67 ingress ratings and Exd flameproof coils for high-risk ATEX/IECEx Zones.
Optional electronic status indicators and feedback switches feed data directly to SCADA systems, enabling remote monitoring of valve open/closed states.
Procurement managers, EPC contractors, and system integrators face severe challenges when sourcing 2-inch valves for large-scale municipal, commercial, or industrial projects. The purchasing cycle is not merely about finding a low unit price; it requires navigating a complex web of certifications, delivery timelines, and reliability guarantees. A failure in a 2-inch main line shutoff valve could lead to catastrophic industrial downtime, regulatory penalties, or human injury. Therefore, global procurement strategies are increasingly focusing on the following critical pillars:
Furthermore, global energy sectors demand compliance with standardized safety integrity levels. Equipment deployed in Europe must bear the CE mark and ATEX safety compliance, while projects in North America demand UL or FM Approvals. In high-integrity applications, a Safety Integrity Level (SIL 2 or SIL 3) certification is mandatory. Sourcing from an OEM factory like Xinhaosi, which holds a wide array of certifications, dramatically reduces the engineering verification cycle for global buyers.
Xinhaosi's manufacturing strategy centers on our state-of-the-art facilities in Chengdu and Deyang. The Deyang manufacturing base represents a massive leap forward into Industry 4.0. By implementing automated CNC machining centers, robotic assembly arms, and computerized testing bays, we maintain absolute control over the physical dimensions, tolerances, and structural integrity of our 2-inch valves.
Supply chain resilience has become a paramount concern for global companies looking to de-risk their operations. Our integrated manufacturing model means we control the entire lifecycle of the valve production—from casting inspection, precise milling, and coil winding, to pressure testing and final CNAS-accredited calibration. This level of integration minimizes dependency on external sub-contractors, cushioning our operations against raw material fluctuations and global shipping disruptions. For OEM buyers, this translates to stable lead times, repeatable physical quality, and substantial cost-efficiencies over Western boutique manufacturers.
Xinhaosi operates in strict compliance with the ISO9001 quality management system. Our dedication to safety engineering is reflected in our certifications: national compulsory Products Certification (3C), explosion-proof certifications, fire product certifications, and international standard approvals including CE and SIL. Xinhaosi is honored to serve as a member of the China Fire Protection Association and is one of the main drafting organizations for the national standard of solenoid valves in China—a true testament to our authority and professional expertise.
In the domain of intellectual property, Xinhaosi has secured over 50 patents and software copyrights. Our research has pioneered technologies such as:
Our in-house calibration laboratory is accredited by the China National Accreditation Service for Conformity Assessment (CNAS) under ISO/IEC 17025. Recognized globally under the ILAC-MRA framework, our lab provides traceable, authoritative testing for gas detection and industrial solenoid valves. Reports generated by our CNAS laboratory are accepted internationally, ensuring rapid regulatory approval and market compliance for our global OEM partners.
A 2-inch valve acts as the primary safety gatekeeper across diverse applications. Depending on the installation location and regulatory framework, these valves are deployed in specific configurations:
Installed on the primary fuel intake lines of commercial malls, hospitals, and high-rise apartments. Paired with a centralized gas controller, the 2-inch valve will shut down fuel flow immediately if basement sensors detect gas accumulation, preventing ignition events.
Deployed in secondary distribution networks and chemical processing lines. These environments require corrosion-resistant cast bodies and explosion-proof terminal boxes (Exd IIC T6) to withstand hazardous, volatile chemical atmospheres.
Placed at city gate stations and district pressure regulation stations. These valves manage natural gas supply lines, utilizing automated reset safety mechanisms to ensure gas lines can be safely restored after line maintenance or low-pressure events.
