Weidouli Valves Co.,Ltd.

Product Development | Pneumatic Full-pass Plug Valve QX647F-150LB-20"

Research and Development Background

This batch of R&D products serves the caprolactam project, and the main medium of the service section is ammonium sulfate powder.


This section initially used a flapper valve, which had internal leakage during use, seriously affecting the project production progress. Then the customer consulted our company and hoped to find a  valve solution suitable for the on-site working conditions.


After multiple technical communication, we decided to try to use a large-size full-bore plug valve for design and development. After repeats of tests in stages such as mold design, machining, and pressure testing, the product was put into mass production.


Manufacturing Difficulties

  • Casting of valve body: Easily to deform during casting.  

  • Machining of the valve: The concentricity needs to be consistent during machining.   

  • Assembly of the valve: The sealing compression ratio should be reasonable during assembly.


Product Advantages

The full-bore plug valve not only combines the requirements of the full bore flow channel of  ball valve ,but also retains the original advantages of the plug valve such as good sealing, no cavity, no deposition, anti-crystallization, and anti-erosion.


Compared with the Venturi structure plug valve: The conventional Venturi rotary valve cannot meet the flow rate of the medium.


Compared with the ball valve: There is a cavity inside the ball valve, which can easily crystallize under special working conditions and cause the valves can't be opened and closed.

Related News & Blog
Gate Valve Mastery in Chemical Processing: Ensuring Fluid Control
Gate valves are essential components in chemical processing plants, enabling precise control over the flow of fluids. Among the various types of valves available, gate valves stand out for their excep...
Metals to Polymers: Exploring Butterfly Valve Materials in Fluid Handling Systems
In the field of fluid handling systems, butterfly valves play a crucial role in regulating the flow of various liquids and gases. These valves are known for their simple design, which includes a rotat...
The Role of Stainless Steel Check Valves in Fluid Control
Fluid control is an integral aspect of various industrial and residential applications. Whether it's managing the flow of water in a household plumbing system or regulating the movement of corrosi...
Product Inquiry
No.20, Xingyu Road, Airport Industrial Zone, Wenzhou city, 325024 P.R.
No.20, Xingyu Road, Airport Industrial Zone, Wenzhou city, 325024 P.R.