Excellent product quality
We bring customers leading product quality with their own dedication, integrity and dignity.
Rich experience in production
We have the industry's first-class workforce. Their professionalism with the management system can ensure that our products and services can be presented in front of customers.
Perfect inspection process
The company is equipped with physical and chemical analysis,mechanical properties,water,air pressure,testing and other advanced testing equipment,from raw materials to finished products.Each process has a special inspection.
Complete after-sales service
Welcome enquiries and visit from the customer. We look forward to working with you, let us join hands!
Wenzhou Zhengyuan Valves Co., Ltd. is located in Wenzhou Longwan District of the southeast coastal economic area, known as China Valves Town, with convenient transportation and leading economic and technological information, focusing on research and development, production and marketing. The company mainly produces forged steel valves including gate valves, globe valves, check valves, ball valves, anti-sulfur gate valves. Y-type globe valves, cryogenic valves,vacuum valves, water seal valves and other non-standard valve with product diameter of 3/8 "-2" (DN10mm-50mm), the pressure rating of 150Lb-2500Lb (0.1Mpa-42.0Mpa), the working temperature of minus 196 ℃ - 800 ℃. Valves main material is carbon steel, alloy steel, stainless steel, Monel, alloy 20, etc. All products can be manufactured according to user requirements. Products are widely used in petroleum, chemical, metallurgy, machinery, electricity, military, water supply and other industries, by the user dependent and praise.
We always pay attention to changes in the market and are concerned about the requirements of each user. Firmly grasp the latest technology today to push forward the product innovation and continuous improvement. So that products can endure and excel in today's competitive to attain the delight of our customers. At the same time, we warmly welcome friends from various circles at home and abroad to negotiate, sincere cooperation, exhibition ambitious ambition, a brilliant year.
My company aims toscience and technology development of new products as the guide to "customer first" "quality first" for the guarantee to provide customers with high-quality zero leakage products, good and thoughtful after-sales service.
We are specializing in forged steel valve development, production and sales in conformity with API, ANSI, DIN, BS, GB, JB. The company's main products are the Dalian-type small diameter, (API) forged steel valves, gate valve, cut-off valve, anti-sulfur gate valve. Y-type stop valve, cryogenic valves and other non-standard val.
1. Leakage of valve body: The reason: 1. There are sand holes or cracks in the valve body; 2. Pull crack of valve body during repair welding Processing: 1. Polish theMORE
When the gate valve closes, the sealing surface can be sealed only by the medium pressure, that is, the pressure of the medium pressure on the sealing surface of theMORE
Leakage of sealing surface Reason: 1. medium flow direction is not correct, erosion sealing surface. 2. flat sealing sMORE