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Within large-scale industrial fluid systems, municipal heat infrastructures, and global gas transmission networks, the 4 inch solenoid valve (commonly designated as DN100) is recognized as a vital engineering control hub. Tasked with handling massive volumetric flows under variable pressures, these valves require absolute precision, structural integrity, and lightning-fast actuation to prevent localized leaks from escalating into catastrophic industrial disasters.
Procurement directors and pipeline engineers in areas like the Middle East, Europe, and the Americas seek customizable OEM/ODM emergency shut-off valves that comply with stringent certifications (such as ATEX for explosion prevention and SIL functional safety). Standard solutions often fall short in demanding industrial settings, driving the demand for specialized Chinese manufacturers capable of configuring and manufacturing high-performance, cost-effective solenoid valves tailored to custom specifications.
A technical roadmap for engineering custom 4-inch gas solenoid valves suited for extreme temperatures and high-pressure operations.
As a leading supplier and direct manufacturer of commercial and industrial valves, our production pathways leverage advanced materials science. A 4-inch gas solenoid valve undergoes substantial mechanical stress due to piping weight, thermal expansion, and fast fluid flow. To ensure structural reliability, we select premium body materials and utilize robust internal components.
| Technical Parameters | Standard Configuration | OEM Custom Options (ODM Tailored) |
|---|---|---|
| Nominal Diameter | 4 Inch (DN100) | Flanged ANSI/DIN, custom face-to-face dimensions |
| Body Materials | Cast Steel, Ductile Iron (QT450-10) | Stainless Steel (CF8/CF8M), Low Temp Carbon Steel |
| Actuation Method | Normally Open / Electromagnetic Release | Normally Closed, Manual Reset, Multi-stage Control |
| Working Medium | Natural Gas, LPG, Town Gas, Methane | Biogas, Synthesis Gas, Non-corrosive industrial gases |
| Seal Compounds | NBR, FKM (Viton) | PTFE (Teflon), HNBR for cryogenic gas networks |
| Operating Pressure | 0 - 0.6 MPa (Low-to-Medium Pressure) | Up to 1.6 MPa (High pressure pipeline series) |
| Certificates | GB Explosion-Proof, Fire Product Standard | CE, ATEX, SIL2/SIL3 Compliant Layouts |
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.
Chengdu R&D Factory & Corporate Office
Deyang Advanced Intelligent Manufacturing Base
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.
A history of safety innovation: from our initial startup in 2003 to the launch of AI-enabled solenoid valves and smart city network integrations.
Established on April 17th, 2003. We launched our first generation of gas leak alarms & fire fighting systems, laying the groundwork for electronic sensors and safety signaling interfaces in residential markets.
We started full-scale production of gas safety valves and expanded our global OEM partnership framework. During this period, we relocated to a modern office building within Chengdu's Longtan Industrial Park to handle growing order volumes.
Achieved a milestone of 10 million cumulative gas detector sales. The organization expanded into its primary Chengdu factory and established a sales & service network across China while launching high-demand fire-power monitoring units.
We launched our self-developed IoT platform alongside advanced fire automatic alarms and emergency evacuation technologies. We received our official National High-Tech Enterprise Certificate and became a qualified supplier to China's top five gas companies.
Began construction of the Deyang manufacturing facility to expand industrial safety valve capacity. Established our dedicated Petrochemical & International Business Divisions, and were recognized as a Sichuan Provincial Technology Center.
Operations began at the Deyang factory, doubling production capacity for 4-inch solenoid valves. We have introduced urban gas pipeline monitoring products, wireless detection tools, and AI-enabled smart safety valves featuring real-time diagnostic reporting.
Providing custom valve engineering to support safety and regulatory compliance across diverse industries.
Within hazardous environments, 4-inch solenoid valves are paired with explosion-proof controllers to isolate pipelines instantly if a leak is detected, reducing danger to operators and machinery.
Large DN100 emergency valves serve as safety barriers at city gate stations and district distribution nodes, mitigating risks from seismic activity or pressure imbalances in public utility systems.
Large-scale boilers and gas turbines require stable, high-capacity fuel systems. Our 4-inch valves deliver high flow rates with minimal flow resistance, ensuring reliable fuel delivery during heavy load demands.
Modern industrial sites cannot risk safety system failures. Our in-house CNAS laboratory calibrates every 4-inch valve unit according to strict ISO/IEC 17025 protocols. We verify seal integrity, coil insulation resistance, and response times under simulated field conditions, ensuring each valve performs reliably when commissioned.
Technical guidance on procurement, installation, and custom setups for industrial gas networks.
Our DN100 gas emergency shut-off valves are designed to close in under 1 second. This rapid response helps prevent gas release down-line in the event of an upstream pipe breach or major leak.
Yes. As a direct OEM manufacturer, we customize flange dimensions to match ANSI Class 150, EN 1092-1 (PN16/PN25), or JIS standards, allowing for seamless integration into existing pipeline infrastructures.
Manual-reset valves require an operator to physically pull the reset handle before the valve can reopen, ensuring a technician inspects the system after a shutdown. Automatic-reset models reopen once control current is restored, which is suitable for remote or automated stations.
Yes. We offer material configurations with 316 Stainless Steel bodies and specialized Viton or PTFE seals to protect internal surfaces from hydrogen sulfide (H2S) degradation.
Explore our core gas detectors, controllers, and normally open solenoid valves designed for industrial hazards.
