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In modern high-capacity gas transmission networks, the integration of automated emergency shutdown components is critical. The 2-inch gas shut-off valve (DN50) stands as the standard specification for commercial gas pipelines, large industrial combustion systems, heating networks, and gas pressure regulator stations worldwide.
As governments globally transition toward stricter industrial health and safety standards (such as OSHA directives in the US, ATEX zones in Europe, and GB specifications in APAC), manual valves are being phased out. Modern gas systems require electromagnetically actuated, rapid-response normally open solenoid valves capable of shutting off gas flow in less than 0.3 seconds upon receiving an electric pulse from a gas detector panel.
As a leading custom OEM manufacturer, we design and produce safety devices tailored to these specifications, helping operators defend their plants against catastrophic gas leaks and explosions.
A primary mechanical advantage of our 2-inch normally open valves (e.g., the XF3III and XF5III series) is their power efficiency. During typical operating conditions, the solenoid consumes zero electric power. This prevents overheating and coil deterioration. When a hazard is detected, the safety controller discharges a 24VDC pulse to close the valve instantly, locking it shut until a technician manually resets the mechanism.
At a DN50/2-inch port size, controlling pressure drop while maintaining high Cv values is critical. Our internal flow path geometry is engineered to reduce resistance, minimize turbulence, and maximize throughput. This allows boilers and industrial furnaces to operate with minimal feed pressure drop, ensuring optimal energy performance.
Industrial safety valves must operate reliably in explosive environments. Our solenoids are housed in heavy-duty explosion-proof junction boxes (rated Ex d IIC T6 Gb). This enclosure prevents internal electrical sparks from igniting surrounding flammable vapors or gases, ensuring safety in Zone 1 and Zone 2 hazardous areas.
Founded in 2003, Xinhaosi is one of the most influential and reliable brands in the gas safety industry. We provide customer-focused products and services to safeguard the operations of factories, cities, and homes. Powered by advanced production systems and technology, we deliver reliable gas safety solutions for a safer future.
Using advanced electronic detection systems, we make invisible gas leak risks visible and actionable. By combining our 2-inch solenoid gas safety shut-off valves with high-precision gas sensors, we offer complete security for industrial gas piping systems.
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A gas safety shut-off valve cannot operate in isolation. It relies on an integrated, multi-tier system of detectors, controller boxes, and gateways to provide full facility security.
High-sensitivity detectors, such as the XP4000 and GTYQ-AT0602A, constantly monitor the air for combustible or toxic gases. They send early warning signals to the central control panel before concentration levels reach critical thresholds.
The JB-TB-AT2020DX controller analyzes incoming sensor signals. If gas concentrations exceed pre-set safety levels, it triggers the interlock control box, discharging a trip voltage to the 2-inch solenoid valve to isolate the gas line.
Using the FDG-X304SE Intelligent Data Gateway and wireless pressure monitors (GT-AT0637), operators can monitor system metrics, pressure fluctuations, and valve statuses in real time via an industrial SCADA platform.
The industrial gas safety market is evolving from basic reactive safety devices to integrated, predictive systems. Our R&D roadmap focused on 2-inch gas shut-off valves targets key industry milestones:
Xinhaosi Electronic Detection Technology Co., Ltd. officially launched its new Handheld Uncooled Infrared Gas Leak Detector, featuring dual-technology fusion, ultra-fast response, and long-distance non-contact detection to enhance safety and efficiency in petrochemical, refrigeration, natural gas and industrial safety scenarios.
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XINHAOSI recently participated in the 5th Western China Cross-Border E-Commerce Expo held in Chengdu. The event brought together cross-border e-commerce platforms, global buyers, manufacturers, and supply chain companies, creating new opportunities for international business cooperation and overseas market development.
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XINHAOSI recently participated in the 2026 Sichuan (Chengdu) – Indonesia Industry Matchmaking Conference held in Chengdu. The event gathered enterprises and industry representatives from China and Indonesia to strengthen industrial cooperation and explore new business opportunities in Southeast Asia.
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