Where Precision Meets Hygiene, and Quality Flows Forever.
Where Precision Meets Hygiene, and Quality Flows Forever.
Zhejiang Mingzheng Valve Technology Co., LTD. (formerly Dongming Valve) is renowned as the king of stainless handle sanitary and food-grade valves and pipe fittings. It mainly produces 304 and 316 L sanitary butterfly valves, ball valves, check valves, P pair valves, and sampling valves. Sanitary grade elbows, tees, reducers, quick couplings, round thread union joints; Sanitary stainless steel pipes, mirror-finished pipes and other non-standard thin-walled and thick-walled stainless steel products have connection methods including: threaded type, welded type, clamp quick-installation type and flange type, etc.
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To be the global leader in high-precision sanitary valves and pipe fittings, delivering innovative, hygienic, and reliable fluid solutions that meet the strictest industry standards.
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Founding & Early Growth (Dongming Valve Era)
Established as Dongming Valve, focusing on stainless steel sanitary valves and fittings for China's growing food and pharmaceutical industries.
Where Precision Meets Hygiene, and Quality Flows Forever.
To empower industries like food & beverage, pharmaceuticals, and biotechnology with cutting-edge fluid control technology, ensuring safety, efficiency, and sustainability in every application.
Quality First！We adhere to ISO, DIN, IDF, SMS, and 3A standards, ensuring every product meets FDA, EHEDG, and GMP compliance.
From material selection to final delivery, we uphold transparency, craftsmanship, and durability.Our team is committed to continuous improvement, ensuring Mingzheng remains synonymous with precision and trust.
Where Precision Meets Hygiene, and Quality Flows Forever.
Butterfly valves feature a simple structure, small size, light weight, low material consumption, small installation dimensions, rapid opening and closing, 90° reciprocating rotation, and low driving torque. They are used to cut off, connect, and regulate the medium in pipelines, and have excellent fluid control characteristics and sealing performance when closed.
Youdaoplaceholder0 Chemical industry : Butterfly valves are used to control the flow of various corrosive media and are suitable for high-temperature, high-pressure environments with strict sealing requirements .
Butterfly valves have a simple structure, mainly consisting of the valve body, valve stem, butterfly plate and sealing assembly. They have few parts and low material usage.
Regularly conduct a visual inspection of the butterfly valve, including the valve body, disc, stem and other components, to check for wear, corrosion or looseness. At the same time, check whether the connecting bolts between the valve and the pipeline are loose, as well as whether there are any signs of leakage in the valve's stuffing box, flange gasket and other parts. In addition, check whether the valve opening is consistent with the actual control signal by the opening indication of the electric actuator or by manual operation on site .
Where Precision Meets Hygiene, and Quality Flows Forever.
Tel: +86 13736365580Fax: 0577-86829718Tel: 0577-85827667
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