Founded in 2003, Xinhaosi has established itself as one of the most influential and trusted manufacturers in the global gas safety and process control industry. Over the past two decades, we have built a robust and comprehensive production and service system. This ecosystem integrates cutting-edge R&D, intelligent manufacturing driven by advanced automation, digital global marketing channels, professional after-sales technician support, and flexible OEM/ODM options. Additionally, we run a CNAS-Accredited laboratory calibration service that satisfies international calibration and testing requirements.
Our diversified product portfolio covers industrial & residential gas detection & alarm systems, industrial & household gas solenoid valves (featuring the widely used 1/2 Normally Closed Solenoid Valve), and urban gas pipeline network monitoring systems. Each component is engineered to operate reliably in highly corrosive atmospheres, high-pressure situations, and hazardous industrial conditions. Annually, our facilities manufacture and ship tens of millions of units, supporting mission-critical operations in oil & gas exploration, petrochemical refining, steel production, municipal gas distribution networks, automotive manufacturing, pharmaceutical processing, and food & beverage production.
Our core philosophy, "Making Gas Safety Accessible Everywhere," guides our dedication to providing customized solenoid valves and safety systems designed for modern industrial processes. Through strict ISO 9001 compliance, continuous component testing, and specialized metallurgical selections, Xinhaosi remains a key partner for global EPC projects and OEM distributors.
Adhering to strict ISO 9001 Quality Management System guidelines, Xinhaosi's valves and detection instruments have achieved a complete suite of global standards, including European CE certification, Functional Safety (SIL 2/3), explosion-proof approvals (Ex d IIC T6 Gb), fire safety listings, and CPA measurement type approvals. As a primary compiler of Chinese national safety standards for solenoid valves and an active member of the China Fire Protection Association, we maintain a strong commitment to quality and engineering excellence.
In terms of intellectual property, Xinhaosi holds over 50 patents and software copyrights. Our developments include a network-enabled graphical monitoring system that monitors valve and gas detector telemetry in real-time, using historical trends for predictive maintenance to decrease field failures by more than 30%. In addition, our integrated flow-monitoring safety valves provide dual functionality by measuring throughput while executing high-speed, bubble-tight safety shutoffs.
A key element of our Quality Assurance protocol is our in-house testing laboratory, which is fully accredited by the China National Accreditation Service for Conformity Assessment (CNAS) and operates under the international ILAC-MRA mutual recognition agreement. The lab operates in strict compliance with ISO/IEC 17025 testing requirements. This facility verifies the accuracy of gas detection calibrations, solenoid coil response times, leak testing, and thermal resistance across extreme temperatures (-40°C to +80°C). This ensures that all OEM shipments meet safety regulations before export.
A deep technical breakdown of the fluid dynamics, electromagnetic performance, and metallurgical options configuration that define Xinhaosi's industrial-grade Solenoid Valves.
Featuring Class H insulation (rated to 180°C) and options for continuous duty (100% ED), Xinhaosi coils are encapsulated in flame-retardant epoxy. This design minimizes inductive heating and prevents breakdown from moisture ingress, ensuring stable switching operations in harsh process environments.
Offered in Forged Brass (HPb59-1) for general utility or Cast Stainless Steel (CF8M/316) for aggressive chemical processes. Solid wall structures prevent stress cracking under heavy hydraulic shock or high piping mechanical stresses.
We use specific elastomers based on the media type. Choose NBR for general hydrocarbon gases, FKM (Viton) for high-temperature and oil applications, or EPDM for clean water and steam lines. This ensures a bubble-tight, zero-leak closure.
| Performance Metric | Direct-Acting Configuration | Pilot-Operated (Diaphragm) | Explosion Proof Option (Ex d) |
|---|---|---|---|
| Nominal Port Diameter | 1/2" NPT / BSPP (DN15) | 1/2" NPT / BSPP (DN15) | 1/2" NPT / BSPP / Flanged (DN15) | Operating Pressure Range | 0 to 10 Bar (0 - 145 PSI) | 0.5 to 16 Bar (7.25 - 232 PSI) | 0 to 25 Bar (0 - 362 PSI) |
| Cv Flow Factor | 0.60 to 0.85 | 4.0 to 4.5 | Configurable up to 4.8 |
| Response Shut-off Time | < 20 milliseconds | < 60 milliseconds | < 30 milliseconds |
| Standard Voltage Supply | 12V DC, 24V DC, 110V AC, 220V AC | 24V DC, 220V AC | 24V DC, 110V AC, 220V AC |
Our Deyang and Chengdu manufacturing sites utilize modern automated machining centers and lean production systems. By integrating advanced vertical CNC centers, automated coil winding machinery, and multi-station inspection benches, we minimize the impact of manual assembly errors. This automation allows us to produce highly consistent solenoid valves with precise dimensions.
Our raw material logistics are integrated via an ERP and MES execution setup. Every bar of stainless steel or brass receives a unique digital identifier, linking it to raw material mill sheets and chemical analysis reports. In an era of volatile material pricing and shifting shipping conditions, Xinhaosi's strong supply chains ensure consistent production capacity and stable pricing for our global OEM clients.
Furthermore, automated optical inspection (AOI) and computerized mass spectrometer leak testers check the dimensional accuracy and seal integrity of each valve body before assembly. This level of quality management reduces field failure rates to less than 150 PPM (Parts Per Million), protecting process safety in chemical plants, commercial buildings, and domestic gas lines.
When purchasing 1/2 Normally Closed Solenoid Valves, global engineers and supply chain managers require strict adherence to international standard criteria, including:
Xinhaosi's engineering department supports industrial clients by providing customized documentation, design drawings in STEP format, and rapid prototype manufacturing to accelerate project execution.
The evolution of flow control engineering: From analog mechanical valves to intelligent, self-diagnosing, and networked IoT safety nodes.
Moving toward Smart Cities, Xinhaosi is developing low-power LoraWAN and NB-IoT telemetry modules that sit directly inside the solenoid enclosure. These units report valve status, cycles, and temperature to a central cloud dashboard.
By monitoring micro-fluctuations in magnetic flux during actuation cycles, our upcoming digital controllers can detect armature wear or debris buildup. This enables maintenance before an unplanned system shutdown occurs.
We are engineering next-generation power-reduction circuits. Once open, these coils drop the holding current by up to 70%, lowering power consumption and heat output for green hydrogen and gas applications.
As chemical plants and city gas distribution networks grow, safety requirements become more complex. Modern installations need interconnected safety systems where detection and valve actuation work in unison.
Xinhaosi supplies complete systems: linking gas detectors, alarm panels, and 1/2 Normally Closed solenoid valves into unified safety loops. In the event of a line rupture or gas leak, the monitoring panel immediately cuts power to the solenoid valve, shutting down flow in milliseconds to prevent gas buildup.
These systems are built to withstand challenging environments, protecting critical points in urban energy grids, hydrogen stations, automotive painting lines, and water treatment operations.
Navigating varying regional compliance standards can be complex for engineering and construction projects. Xinhaosi provides engineering support through international distribution channels and local partners.
Whether verifying UL standards for North America, CE-EN compliance for the European Economic Area, or UkrSEPRO for Eastern Europe, our technical division ensures all necessary certifications are in order. Our engineers can adapt body threads, coil voltages, and certifications to match local regulatory and project specifications.
Normally Closed (NC) indicates that the valve remains tightly closed by spring force when electrical power is disconnected. It only opens when the solenoid coil is energized. This design serves as a fail-safe mechanism, ensuring the line shuts off automatically in the event of a power failure.
The 1/2" (DN15) sizing is a common standard for residential gas drops, pilot burner feed lines, instrumentation headers, and pneumatic control panels. It offers a balance of flow rate (Cv value) and compact design, while keeping power consumption low.
To ensure proper configuration, specify: media type, operating pressure range, fluid and ambient temperature ranges, explosion-proof requirements (e.g., ATEX/IECEx/SIL), connection thread (NPT, BSPP, or flanged), coil voltage (AC/DC), and body material (Brass or Stainless Steel).
Every production run undergoes pressure decay and helium leak testing in our CNAS-accredited laboratory (operating under ISO/IEC 17025). This ensures zero bubble leakage and verifies the coil's electrical resistance before shipping.
Yes. Our solenoid valves can be fitted with 316 Stainless Steel bodies and waterproof, epoxy-encapsulated coils, providing IP67/NEMA 4X ingress protection for marine, petrochemical, and outdoor operations.
Yes. We offer comprehensive OEM/ODM services, including customized orifice sizes, custom thread types, integrated pressure sensors, private labeling, and regional safety certifications to fit your project requirements.