Zhejiang Sedelon Valve Co.,Ltd, China gate valve, globe valve, butt weld globe valve, expanding plug valves, stainless steel ball valve, lug-style butterfly valves, cast steel butterfly valves, low temperature ball valves, socket weld end ball valves manufacturer and factory. Welcome to contact us.

The company has passed ISO9001:2008
quality management system certification.

  • Special Equipment Type-examination Certificate-Globe valves
  • Special Equipment Type-examination Certificate-Gate valves
  • Special Equipment Type-examination Certificate-Ball valves
  • Manufacture License of Special Equipment People's Republic of China
  • ISO9001
  • CE-1521-1
  • CE-1521-2
  • CE-1521-3
  • CE-1521-4
  • CE-1521-5
About Sedelon
Sedelon Valve Co.,LtdRead

SedelonValve Company is established in 1998. Based in “the valve county”---Wenzhou, Zhejiang, China, this company integrates manufacturing and trading together.
The main products of this company are Bronze valves, API/DIN gate/globe/ check valves/butterfly valve/plug valve, ball valves and forged steel valves. Its products have been widely used in petroleum, petrochemical, chemical, metallurgy, electric power, water conservancy, machinery and many other fields.
In order to provide customer high-quality and better service, the company has equipped the system certification such as API6D, CE, ISO9001, TS, ect.
We have a strong technical and management team which is formed by advanced technical experts, engineers, managers, salesmen. We emphasize the importance of teamwork. Working together and helping each other, we are just like a big and warm family.

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  • Penetrant Testing(PT)
    Penetrant Testing(PT)

    Penetrant Testing(PT) By applying penetrant, the redundant parts is removed with a detergent, and if necessary, applying imaging agent to obtain an indication of some defects opening on the surface in the part. Penetration testing is based on the liquid to the solid's wetting ability and capillary phenomenon in the physics, first let contain dyes and high penetration of the liquid penetrant, coated to the surface of the tested workpiece, due to the liquid's wetting action and capillary action, the penetrant infiltration into the surface opening defects. After applying the penetrant, it is permitted to sit on the surface for a specified period of time (the "penetrant dwell time"), then the part is carefully cleaned to remove excess penetrant from the surface. A light coating of developer is then be applied to the surface and given time ("developer dwell time") to allow the penetrant from any voids or fissures to seep up into the developer, creating a visible indication.

  • Sedelon® High Pressure Seal Tilting Disc Check Valve
    Sedelon® High Pressure Seal Tilting Disc Check Valve

    Sedelon Valve Provide a lot of Check Valves.Such as Swing Check Valves,Lift Check Valves,Wafer or Dual Palte Check Valves,Tilting Disc Check Valve and so on. Today we specially recommend the High Pressure Seal Tilting Disc Check Valve. The High Pressure Seal Tilting Disc Check Valves’ Main Feature: 1.Design of double eccentric disc,When valves closed, the valve seat and the sealing surface gradually touch, in order to achieve no impact, no noise. 2.The design of High Pressure Seal and Micro elastic metal seat can make good sealing performance. 3.Small flow resistance and save energy 4.Butterfly valve design, quick, sensitive switch, long service life. Tilting Disc Check valve generally applies to clean medium, should not be used for medium containing solid particles and viscosity is bigger. As a one of main products in Sedelon Valve Company,The main production material of Tilting disc Check Valves is Cast steel, Stainless steel and Alloy steel ,Bronze,Cast Iron and so on.

  • PMI Test on Sedelon Valves
    PMI Test on Sedelon Valves

    Positive Material Identification (PMI) is the analysis of a metallic alloy to establish composition by reading the percentage quantities of its constituent elements. The object of this nondestructive testing method is to identify metal alloys in place using a portable X-Ray fluorescent analyzer that determines the elemental composition of the material. At Sedelon, we have our own hand held Positive Material Analyser for confirming all stainless steel grades, Inconels, Hastelloys, Duplexes Steels and much more, without having to transport, alter, or damage the material. For Duplex Stainless Steel and Stainless Steel valves, PMI is conducted by using PMI XRF portable test gun, pointed at the external surface of completed valves. Parts of valves to be PMI tested are: a)Body, b)Bonnet, c)Stem, (for all valves having externally-exposed stems) By using PMI test, we can confirm all material received against orders raised by clients, and all tests can be witnessed by clients or their nominated inspectors.