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.

MediaRead More
  • Heat treatment for Sedelon Valves
    Heat treatment for Sedelon Valves

    Heat treatment for Sedelon Valves Heat treatment is a method used to alter the physical, and sometimes chemical properties of a material. The most common application is metallurgical. It involves the use of heating or chilling, normally to extreme temperatures, to achieve a desired result such as hardening or softening of a material. It applies only to processes where the heating and cooling are done for the specific purpose of altering properties intentionally Types of Heat Treatment (Steel): 1) Annealing / Normalizing, 2) Case hardening, 3) Precipitation hardening, 4) Tempering, and Quenching The purpose of Heat Treatment:

  • Sedelon ® Globe Valve with Locking Devices
    Sedelon ® Globe Valve with Locking Devices

    Forged steel flange globe valves are the valves whose disc move along the valve seat center-line when closing and opening. Regarding these kinds of valves , the most obvious advantage is: In the process of opening and closing, due to the friction between the disc in the valve sealing surface is smaller than gate valves, so it is much durable and wear-resisting. The rising height in the process of opening is generally only a quarter of the seat channel’s diameter, so the shape and size are much smaller than gate valves. Typically there is only one sealing surface on the valve body and disc, thus it is easy to maintenance.

  • API598 Inspection and Testing
    API598 Inspection and Testing

    API598 Inspection and Testing Inspection Range: This standard covers the inspection, test, complementary inspection and pressure test of Gate, Globe, Check, Ball, Butterfly and Plug valves. Testing Types: A shell test B backseat test C low pressure seal test D high pressure seal test E appearance inspection of casting F high pressure gas shell test.