Pioneering safety through advanced engineering, sensor technologies, and shut-off valves.
Analyzing market drivers, regulatory demands, and safety parameters in modern pipeline infrastructures.
In modern industrial process plants, municipal gas supply grids, and high-occupancy commercial zones, the 2-inch (DN50) shut off valve serves as a critical safety component. Whether deployed as a fast-acting electromagnetic solenoid valve or an automated motor-driven actuator, these systems are designated to isolate gas flows rapidly under emergency scenarios such as seismic activity, abnormal pipeline pressure drop, or combustible gas concentration detection. Global environmental directives coupled with zero-tolerance safety policies have driven the installation of reliable, fast-closing 2" shut-off systems across major manufacturing corridors.
From a manufacturing standpoint, sourcing from a dedicated OEM 2 shut off valve supplier guarantees that valves conform to precise localized standards (such as EN 161 in Europe, ANSI/ASME specifications in North America, and GB regulations in China). Modern factories emphasize strict manufacturing tolerances, explosion-proof integrity, and low leak rate indexes. These factors ensure that during catastrophic scenarios, gas supply containment occurs within milliseconds, preventing massive secondary explosions and protecting high-value industrial assets.
Global operations mandate EN161 Class A approvals, FM, and CSA markings. Our OEM 2 shut off valves align with regional requirements, assuring smooth regulatory custom clearance and compliance.
Intended for highly volatile zone environments, our solenoid valves feature ATEX, SIL 2, and Class I Div 1 explosion-proof solenoid enclosures to ensure secure functionality in petrochemical plants.
Equipped with optimized magnetic coils and rapid-return spring mechanism design, ensuring automatic shut-off triggers execute in less than 1.0 second upon signal loss.
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.
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" and "National Quality Leading Enterprise in the Gas Alarm Industry," and serves as a proud member of the China Fire Protection Association and the main drafting organization for national standards of solenoid valves.
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 the first networked bus-type gas leakage monitoring system and the only maximum-point gas leakage monitoring system certified by the Ministry of Public Security.
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. Operating in accordance with ISO/IEC 17025, our laboratory provides reliable and traceable testing services. Test reports issued by the CNAS-accredited laboratory are widely accepted by regulatory authorities, certification bodies, and global customers, validating absolute quality compliance and smooth market access.
Exploring the integration of Smart IoT, Predictive Maintenance, and Energy Efficiency in flow control safety.
The incorporation of real-time telemetry allows municipal gas departments and plant managers to monitor valve positions (open/closed status), coil temperature, and operational cycles remotely. By collecting performance data over time, operators can proactively manage assets and anticipate potential issues before failure occurs.
Next-generation 2" shut off valves are designed with built-in micro-differential pressure or thermal dispersion flow sensors. Combining emergency closure and real-time leakage measurement into a single, compact body saves installation space and reduces leakage points in critical piping setups.
Traditional valves require continuous electrical current to remain in their active state, leading to continuous heat generation and energy draw. Modern smart solenoids utilize dual-winding or pulse-width modulation (PWM) driver technology to reduce power consumption by up to 80% once the valve is engaged, lowering operating costs and thermal stress.
Systemic integrations protecting lives and commercial assets across diverse environmental settings.
In high-density commercial kitchens, low-pressure natural gas lines supply burners continuously. Integrating gas leakage detectors (like the JT-AT2018 or JT-AT2007 Series) with an automated 2" gas shut-off valve at the main service intake ensures instant shutdown if gas concentrations exceed 10% LEL (Lower Explosive Limit), protecting occupants from explosive hazards.
For chemical and refining processes where hazardous media are present, explosion-proof detectors (e.g., the XP3000 or GTQ-XP4000) monitor toxic, VOC, or combustible vapors. The detectors transmit data to an interlock control box (like the JB-MK-AT2042X), which automatically activates explosion-proof safety shut-off valves in the event of a system leak.
Large boiler installations consume gas at high flow rates. A 2" (DN50) solenoid valve serves as the main safety valve upstream of the burner assembly. If ventilation failure occurs, or if carbon monoxide/combustible gas is detected in the room, the emergency interlock system cuts power to the valve, securing the fuel line instantly.
Modern cities utilize wireless terminals (such as the GT-AT0636 Series) and pressure monitors (such as the GT-AT0637) to supervise remote pipeline pressure and leakage trends. Integrating smart 2" shut off valves with IoT telemetry allows municipal gas operators to monitor, isolate, and manage localized distribution branches from a central control room.
Reflecting over two decades of steady technological growth, factory expansions, and pioneering innovations.
Technical clarifications, specifications, and selection insights for engineers and OEM purchasers.
Normally Open (NO) valves remain open without electrical power. They are typically shut off via a short electric pulse during an emergency and must be manually reset once the area is declared safe (common for municipal gas supply lines, e.g., the XF3III Series). Normally Closed (NC) valves require continuous electrical power to remain open, meaning any power cut or signal failure will cause them to close automatically. This fail-safe mechanism is preferred in high-risk industrial burners.
For standard methane or propane gas installations, cast brass or aluminum alloys are standard. In corrosive atmospheres, chemical refineries, or hydrogen-blend gas distribution lines, high-grade 316 stainless steel or specially coated cast iron is required to prevent hydrogen embrittlement and surface degradation, ensuring the valve remains operational over decades.
For European markets, compliance with EN 161 (Automatic shut-off valves for gas burners and gas appliances) and ATEX (explosion protection) is essential. For the North American market, approvals by FM (Factory Mutual), UL, and CSA are required. Additionally, safety integrity levels like SIL 2 or SIL 3 are necessary for safety instrumented systems (SIS) in chemical processing.
Our patented solenoid valve with integrated flow monitoring measures flow rates and detects downstream leaks. If the flow rate exceeds safety thresholds, the valve triggers its own alarm and closes, preventing dangerous gas build-ups and simplifying system design by eliminating the need for a separate flow meter.
Industrial-grade shut-off valves are designed for over 100,000 to 500,000 cycles depending on their design. Main seals (NBR, FKM) should be inspected and tested annually for leak tightness. Coil performance and solenoid actuation should also be checked as part of regular plant safety inspections.
Comprehensive product options from valves and detectors to controllers and low-voltage boxes.
