Integrating state-of-the-art sensory technologies with rapid-shutoff safety architectures.
A 120v gas solenoid valve serves as the fundamental safety control point in modern industrial, commercial, and residential fuel delivery lines. Utilizing electromagnetic force, these valves are designed to immediately open or close fuel lines, responding to electrical signals generated by PLC controllers, thermostats, or safety gas detectors. Operating at 120VAC (Alternating Current), these units are highly popular across North American and international markets, aligning directly with common industrial grid and municipal building voltages.
For engineering decision-makers, selecting a valve goes beyond basic dimensions. Key technical requirements such as coil insulation class (typically Class H or F), duty cycle, continuous power rating, and minimum operating differential pressure (MOPD) must be fully aligned with safety targets. Additionally, gas medium compatibility requires careful consideration of the elastomer material. For example, NBR (Nitrile) is preferred for general utility gases, while Viton (FKM) is specified for high-temperature and chemically aggressive gas environments.
| Parameters | Industrial Specification | Residential / Light Commercial |
|---|---|---|
| Operating Voltage | 120V AC (50/60 Hz) | 120V AC / 24V DC |
| Body Material | Forged Brass / SS316 | Cast Aluminum / HPb59-1 Brass |
| Response Time | < 1 Second (Immediate Shutoff) | < 2 Seconds |
| Protection Class | NEMA 4X / NEMA 7 (Explosion Proof) | IP65 Dustproof |
| Certifications | SIL 2 / SIL 3 / CE / UL429 | CPA / National Safety Standards |
| Ambient Temperature | -40°C to +80°C | -20°C to +60°C |
Chengdu Factory & Office Headquarters
Deyang High-Capacity Smart 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.
Leveraging advanced manufacturing paradigms to secure competitive cost structures and global supply chain resilience.
By using fully automated multi-axis CNC milling centers, we ensure that every valve body features highly precise thread engagement (NPT or ISO) and internal seal pathways. This completely eliminates leak points, keeping processing dimensional tolerances within ±0.01mm.
Unlike standard manufacturers, Xinhaosi subjects every single 120v solenoid valve assembly to gas-tight pressure decay testing, electrical insulation withstand tests, and dynamic response tests before packaging. This results in a field reliability rate of >99.98%.
Our direct access to world-class copper and alloy smelters in Southwest China protects Xinhaosi from global commodity price swings. This ensures stable manufacturing pricing and fast lead times, even during volatile market conditions.
As the industrial world transitions to Industry 4.0, safety valves are evolving from simple mechanical components into intelligent, data-generating edge devices. Xinhaosi is at the forefront of this evolution, developing self-diagnostic solenoid valves that integrate seamlessly with our proprietary IoT platforms.
Our upcoming smart valve line combines gas control with active flow and pressure sensors. By transmitting data to our cloud platform, these valves monitor coil temperature, electrical current variations, and seat degradation. The system alerts engineering teams before a physical breakdown occurs, reducing unscheduled facility shutdowns and maintenance costs.
In addition, we are expanding our wireless, low-power gas safety architectures. This allows 120V solenoid shut-off units to pair directly with remote, battery-operated gas leak detectors over secured industrial RF or Zigbee networks. This setup makes safety installations straightforward and highly adaptable, without requiring expensive physical wiring.
Analyzing current waveforms to detect magnetic armature wear, warning teams of valve degradation 30 days in advance.
Developing electronic modules that reduce solenoid holding power by up to 70%, minimizing heat generation and energy use.
Redesigning sealing elements and material structures to withstand high-purity hydrogen, supporting the transition to clean energy.
Helping complex global operations maintain strict safety standards and operational uptime.
Protecting critical production lines against combustible gas buildups. Our explosion-proof 120v solenoid valves handle severe environments and are designed for zone-classified hazardous areas.
Supporting municipal gas distribution grids with reliable shutoff systems. Our solutions integrate pressure monitoring with emergency backup power systems to protect residential zones.
Designed for industrial burners, ovens, and furnaces. Our valves provide immediate gas shutoff upon power interruption or temperature limit violation, meeting strict safety guidelines.
Helping procurement managers verify certifications, reduce supply risks, and access localized technical support.
Industrial procurement managers look for reliable partners, not just parts. At Xinhaosi, we minimize supply risks by providing comprehensive documentation, trace metal reports, and third-party safety certificates.
We work with international logistics providers to coordinate shipping, customs, and duty processing. This ensures that custom OEM valves and control systems arrive at your project site on schedule.
We work with regional field engineering offices in North America, Europe, and Asia to assist with local safety codes and installation support. From initial selection to onsite commissioning, our team helps keep your projects on track.
Need support? Our technical engineering team is available for custom manifold configurations, pressure drop calculations, and safety control design reviews.
Two decades of engineering growth, standard-setting innovation, and global safety solutions.
Established on April 17th, 2003. Launched our first-generation gas leakage detection systems and specialized fire protection components.
Expanded our manufacturing lines to include gas safety solenoid valves. Developed OEM product lines and moved our main offices to the Longtan Industrial District.
Reached a milestone of 10 million cumulative gas safety detectors sold. Moved into our Chengdu production facility and developed a comprehensive distribution network across China.
Launched our proprietary cloud IoT monitoring platform. Developed smart emergency lighting systems and earned High-Tech Enterprise status. We became a certified supplier to China's top five major energy utility companies.
Began construction on our high-capacity Deyang manufacturing plant. Formed our specialized International Petrochemical Business Division and was recognized as a Provincial Technology Center.
Successfully opened our new Deyang manufacturing facility. Launched our latest urban pipeline network telemetry systems, wireless safety devices, and AI-enabled solenoid valves.
Answers to common technical questions about 120v gas solenoid valves, safety standards, and project specifications.
A 120v AC power supply provides reliable torque and strong electromagnet performance, and it integrates directly into standard North American industrial grids without needing separate step-down transformers. This simplifies the wiring design and reduces failure points.
These units use a direct-acting or pilot-operated internal piston. The internal spring holds the valve shut under normal conditions. When electrical energy powers the solenoid, it creates a magnetic field that lifts the core, opening the path for gas. When power is cut, the field collapses instantly, and the spring snaps the valve shut to stop flow.
Forged brass is the standard choice for general utility gas lines because it is robust, easy to machine, and economical. For corrosive, high-moisture, or offshore environments, stainless steel 316 is recommended. Lightweight aluminum is typically reserved for large-diameter, low-pressure commercial utility lines.
SIL 2 (Safety Integrity Level 2) certification verifies that the product's probability of failure on demand (PFD) meets strict international safety standards. In high-risk environments, using SIL-rated valves helps facilities meet regulatory requirements and reduce liability.
Xinhaosi products hold a full range of safety approvals, including ISO9001, CE, SIL 2, CPA measurement approval, fire protection product certification, and explosion-proof ratings. We also perform certified calibration testing inside our CNAS-accredited testing laboratory.
Helping facilities maintain safe environments with certified signal alarms, interlocks, and low-voltage electrical panels.
