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Professional manufacturer of high-quality ball valves
Main products: Floating flanged ball valves: GB/T12237, ASME B16.34, JISB2071, DIN3356, GB lined with fluorine Q41F46-Q41PFA
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SANYI
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Years of industry experience, an excellent R & D team, and an intelligent production system
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The company has high-precision CNC processing technology. The valve body blanks are precision cast and silica sol process is rigorous.
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The company has 500 tons of rough materials in stock all year round, ensuring that products can be processed from inquiry, processing and assembly.
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Our sales team is online all day long. Our engineers are always on call to ensure efficient handling of detailed technical issues.
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Latest News
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2026-04-27

Brief description of key points to consider during the installation and maintenance of the three-way ball valve

The three-way ball valve is a relatively new type of ball valve. It possesses some unique advantages inherent to its structure, such as no friction during opening and closing, less wear on the seal, and smaller opening and closing torque. This enables the reduction of the specifications of the accompanying actuator. When paired with a multi-turn electric actuator

Brief description of key points to consider during the installation and maintenance of the three-way ball valve

2026-04-27

If these 6 points are properly implemented during the design process, the lifespan of the black water regulating valve will be significantly extended!

In the coal-water slurry gasification process, the black water regulating valves in the gasifier and scrubber are indispensable components of the entire process. Due to extremely harsh working conditions, the service life of the black water regulating valves is very short, ranging from 1 month to 3 months. Therefore, it is crucial to design to extend their service life as much as possible.

If these 6 points are properly implemented during the design process, the lifespan of the black water regulating valve will be significantly extended!

2026-04-27

What are the causes of leakage in pneumatic butterfly valves?

Pneumatic butterfly valves are used for controlling solid materials. They are often used as discharge valves at the bottom of tanks, such as the bottoms of cement tanks and stone powder tanks, for discharging materials and quickly cutting off the flow. Since most dusty materials contain particles of various sizes, the wear on the valve sealing surface is inevitable. Incorrect selection can significantly reduce

What are the causes of leakage in pneumatic butterfly valves?

2026-04-27

When choosing the material for the valve sealing surface, the following six factors should be taken into consideration!

The sealing surface is the most critical working surface of the valve. The quality of the sealing surface directly affects the service life of the valve. The material of the sealing surface is also an important factor in ensuring the quality of the sealing surface. Therefore, when choosing the material for the valve sealing surface, the following factors should be considered:

When choosing the material for the valve sealing surface, the following six factors should be taken into consideration!

2024-09-30

The differences and comparisons between wave pipe stop valves and ordinary stop valves

The corrugated pipe stop valve, also known as the corrugated pipe sealing stop valve, is designed through automatic roll welding to create a metal barrier between the fluid medium and the atmosphere, ensuring zero leakage of the valve stem.

The differences and comparisons between wave pipe stop valves and ordinary stop valves

2024-09-30

Leakage test: Incorrect operation of gate valves and globe valves

When testing the newly constructed pipeline system, the pipes and valves need to undergo preliminary tests: two leak tests, one 150% static hydraulic test, and one N2He (nitrogen, helium) leak test. The objects of these tests include not only the flanges connecting the valves and pipes, but also the valve covers and valve body interfaces, as well as all the stop valves/valve cores in the valve body.

Leakage test: Incorrect operation of gate valves and globe valves

2024-09-30

What are the characteristics of the valve manufacturing process?

Compared with the manufacturing processes of other institutions, the valve manufacturing process has the following characteristics: 1. The manufacturing process and inspection process of the valve blank are more complex. The casting blanks of the valves are complex thin-walled shell parts. The casting requires a smooth surface and clear characters, especially with few defects. To meet these requirements, a series of process measures should be taken during the casting process, such as selecting high-temperature-resistant molding ma

What are the characteristics of the valve manufacturing process?

2024-09-30

Understand the working principle, advantages and applications of pneumatic ball valves!

The pneumatic ball valve is evolved from the plug valve. The main difference between them is that while the plug valve rotates 90 degrees, the plug body of the ball valve is a sphere with a circular passage or flow channel passing through its axis. Its working principle is to open or close the valve by rotating the valve core. The pneumatic ball valve is lightweight and compact in size. It can be made in large diameters, has reliab

Understand the working principle, advantages and applications of pneumatic ball valves!

2024-09-30

Under normal working pressure, what causes the leakage of the sphere?

The sphere has leaked. Under the normal operating pressure of the equipment, there was excessive leakage between the valve disc and the sealing surface of the valve seat. The reasons for this are as follows: five points. 1. Dirt has fallen onto the sealing surface. To solve this problem, use an extension wrench to open and close the valve several times to flush away the dirt.

Under normal working pressure, what causes the leakage of the sphere?
Super-large stock ball valve factory

2018

Established in(Year)

500+

Stock Rough(Ton)

1000+

Partner(Position)

60+

Exporting Country(Unit)

Shanghai Sanyi Fluid Equipment Co., Ltd
Address：Room 4289, Building 2, No. 288 Ningfu Road, Fengxian District, Shanghai
Mobile：+86-138 5885 5863
E-Mail：138581686@qq.com
QQ：138581686

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