Valve Manufacturing Service Provider
Apr 17,2025
A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for on-off control of low-pressure pipeline media. A butterfly valve refers to a valve in which the closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing.
Knowledge
Apr 17,2025
In accordance with the relevant provisions of the "Management Measures for the Certification of High-tech Enterprises" (Guokefahuo [2016] No. 32) and the "Guidelines for the Management of the Certification of High-tech Enterprises" (Guokefahuo [2016] No. 195), the fourth batch of 228 high-tech enterprises registered and reported by the Henan Certification Agency in 2024 (see the attachment for details) are hereby announced.
Company News
Apr 17,2025
Zhengzhou Zhongnan Valve Co., Ltd. was recognized as a high-tech enterprise
On December 24, the official website of High-tech Enterprise Certification disclosed an announcement on the filing of the fourth batch of high-tech enterprises certified and reported by the Henan Provincial Certification Agency in 2024. Zhengzhou Zhongnan Valve Co., Ltd. was on the list, with certificate number GR202441003423 and issuance date of December 24, 2024.
Company News
Apr 17,2025
The difference in softness and hardness of sealed butterfly valves
Hard seal: A seal where both sides of the sealing pair are made of metal or other harder materials is called a "hard seal".
Knowledge
Apr 17,2025
Characteristics and installation of electric butterfly valve
Electric butterfly valve is an important execution unit in the field of industrial automation control.
Knowledge
Apr 17,2025
The structural differences between soft sealed butterfly valves and hard sealed butterfly valves
Soft sealed butterfly valves are mostly of the medium line type, while hard sealed butterfly valves are mostly of the single eccentric, double eccentric, or triple eccentric types.
Knowledge
Apr 17,2025
How to choose a soft sealed flange butterfly valve
When choosing a soft seal flange butterfly valve, the following factors need to be considered
Knowledge
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