Since its establishment, Zhejiang Maria Valve Co., Ltd. has specialized in manufacturing a wide range of industrial valves, serving key sectors such as petroleum, steel, power generation, chemical, and water treatment. Leveraging years of experience and advanced engineering technology, we have consistently delivered high-quality, reliable valves to clients worldwide. Founded with a commitment to innovation and excellence, Zhejiang Maria Valve has become a trusted supplier for global process control solutions, offering products that meet rigorous international standards.
As one of the pioneers in China’s valve manufacturing industry, we have contributed to advancing control valve technology and elevating product standards across the market. We focus on combining cutting-edge technology with practical engineering solutions to ensure efficiency, safety, and long-term reliability.
We provide a comprehensive range of valves, including control valves, ball valves, butterfly valves, gate valves, and custom-designed specialty valves for industrial applications. Since 2003, our company has been dedicated to the development and design of high-performance valves for pipeline and instrumentation control systems.
Serving customers in multiple countries with a reliable supply chain. Our innovation leadership and continuous R&D allow us to develop advanced valve solutions that thrive in the most demanding environments, from deep-sea pipelines to cryogenic storage terminals.
The global shift towards Liquefied Natural Gas (LNG) and Liquid Hydrogen (LH2) has created an unprecedented demand for valves that can maintain seal integrity at temperatures as low as -253°C. Information gain: Modern cryogenic valves now utilize advanced PCTFE (Polychlorotrifluoroethylene) and reinforced PTFE to prevent brittle failure.
Industry 4.0 is entering the cryogenic space. We are now integrating sensors that monitor stem seal integrity and packing friction in real-time, allowing for predictive maintenance in air separation units (ASU) and satellite launch facilities.
Regulatory bodies like the EPA and EU Environmental Agency are tightening standards on methane leakage. Our latest cryogenic ball valves feature "Low Fugitive Emission" packing designs that meet ISO 15848-1 Class A standards.
Pipe Production
Injection Molding
Precision Cutting
Heavy Forging
CNC Machining
Quality Control
Final Assembly
Export Packaging
PPR Production
Modern Machinery
Auto Cutting
Precision Lathe
For cryogenic service, the "Extended Bonnet" design is crucial. It keeps the stem packing away from the cryogenic fluid, allowing it to remain at a temperature high enough to maintain a functional seal. Our OEM designs optimize the length of this extension based on the specific gas properties (Oxygen, Nitrogen, Argon, or LNG) to ensure zero icing and maximum safety.
We utilize CF8M and CF3 stainless steels, which retain their impact strength at absolute zero. Every valve undergoes cryogenic testing in liquid nitrogen to verify seat tightness and torque requirements before shipment.
Every industrial project has unique footprint requirements. We offer custom face-to-face dimensions, specialized end connections (Butt-weld, Flanged, or Socket-weld), and integration with world-class actuators (Pneumatic, Electric, or Hydraulic).
Zhejiang Maria Valve ensures that every product complies with ASME B16.34, API 6D, and CE/PED standards. We provide full material traceability (MTRs) and 24/7 technical support to ensure your plant operation never sees a second of unplanned downtime.
Maria Valve
