Explanation of fully welded ball valves

The fully welded ball valve produced by WENBAO valve is composed of three independent forged parts that are welded together to ensure that the ball valve is connected to the valve body without leakage under allowable working conditions. The product is mainly used in natural gas, oil, water and other media, suitable for pipeline use in residential heating, urban gas, petrochemical, steel, shipbuilding, metallurgy, power plants, pressure regulating stations and other industries. Wenbao Valve provides comprehensive quality assurance and excellent after-sales service for your purchase of WENBAO series products.

Design features

1. The valve body material is made of high-grade low-carbon steel and high-grade low-carbon steel pipes that comply with international standards. Advanced fully automatic welding machines are used for welding, and the welds pass non-destructive testing.

2. The connecting pipe is formed by forging and pressing in one piece, so that the performance of the disc spring can still be used normally at minus 200 degrees. At the same time, multiple connection methods can be designed according to the user's requirements for the valve connection end.

3. The valve stem is made of high-performance stainless steel material, which has good corrosion resistance, anti blow design, and better use. The sealing materials are fluororubber (FPM), carbonized PTFE+C, PEEK, which have the characteristics of high strength, high temperature and high pressure resistance, good corrosion resistance, and long service life.

4. The ball valve is made of high-performance stainless steel, and after processing, it is tracked and tested by the Tokyo precision roundness tester RONDCOM30C in Japan, with very precise accuracy.

technical parameter

Nominal diameter: DN15~DN1200 (1/2~48)

Nominal pressure: PN16-PN100 (Class150 Class600)

Applicable temperature: -20 ℃~200 ℃

Valve body material: carbon steel, stainless steel

Ball core material: stainless steel 304, 316

Valve stem material: 2Cr13, 304, 316

Connection method: butt welding, flange

Driving methods: handle, turbine (vertical/horizontal), pneumatic, electric, etc

Execution standards: According to GB/T12237-2007, AP16D, ASME, B 16.34, certified by ISO9001, Korean KC, and TS.

1. Fully welded ball valve:

Valve body material: carbon steel

Ball core material: SUS 304;

Valve stem material: 2Cr13, 304

Nominal pressure: PN25~Pn40

Applicable temperature: -20 ℃~2000C

Diameter: DN15~DN125 using manual operation

DN150~DN300 are driven by turbines

The fully welded ball valve adopts a bidirectional sealing structure, and the valve seat uses a carbonized PTFE sealing ring, which has high strength and good self-lubricating performance; Low friction coefficient; The disc spring behind the valve seat has a compensation function, ensuring that the sealing surface of the valve seat is tightly adhered to the spherical surface and will not leak within the specified pressure and temperature range. The connection methods include butt welding and flange connection. Applicable media include: water, natural gas, steam, and oil products.

2. Fixed fully welded ball valve

Valve body material: carbon steel

Ball core material: SUS 304

Valve stem material: 2Cr13, 304

Nominal pressure: PN16~PN40

Applicable temperature: -20 ℃~2000C

The ball of DN350~DN1200 fixed fully welded ball valve is a fixed structure, with composite bearings installed on the upper and lower shafts of the ball, which further reduces the operating torque of the valve during opening and closing. When subjected to medium pressure, the floating valve seat will move to make the sealing surface tightly adhere to the spherical surface. When under low pressure, the necessary thrust is provided by the screw spring behind the valve seat to ensure a high degree of sealing. It is also possible to design structures such as long valve bodies, long valve stems, diameters, and reduced diameters according to user needs. Applicable media include: water, natural gas, steam, and oil products.

3. Directly buried fully welded ball valve

Valve body material: carbon steel

Ball core material: SUS 304

Valve stem material: 2Cr13, 304

Nominal pressure: 300LB~1500LB

Applicable temperature: -20 ℃~200 ℃

The directly buried fully welded ball valve can be directly buried underground without the need to build a tall valve well or underground operating room. It can be operated on the ground using a T-shaped handle transmission, eliminating the hidden danger of entering the underground operating room. Applicable media include: water, natural gas, steam, and oil products.

4. High pressure fully welded ball valve

Valve body material: carbon steel

Ball core material: SUS 304

Valve stem material: 2Cr13 three hundred and four

Nominal pressure: 300LB~1500LB

Applicable temperature: -20 ℃~200 ℃

Design standards: API6D, API608

The valve body is composed of three independent forgings welded together. The size of the valve body meets the strength and rigidity requirements of relevant standards. Teflon and carbonized Teflon can be used for valve seat sealing in different situations. When under low pressure, the necessary thrust is provided by the spiral spring behind the valve seat to ensure high sealing. In addition, sealant can be injected to assist the sealing system. The valve stem is designed with an anti blow out structure, which will not spray out due to improper operation. It has an independent seal and can also be injected with sealant to assist the sealing system. The valve is designed with fire and anti-static properties. Applicable media include: water, natural gas, steam, and oil products.

Since its establishment, Wenbao Valve Co., Ltd. has been committed to combining talents, creating high-quality products, improving systems, ensuring security, providing honest services, striving for excellent business, and wholeheartedly providing customers with excellent products and services.