Ball Valves
0102030405
B367 Gr.C-2 Worm Gear Operated Trunnion Mounted Ball Valve
The structure of ball valves made of titanium alloy materials mainly includes components such as valve bodies, valve covers, valve stems, spheres, and valve seats. The main characteristic of titanium alloy ball valves is their excellent corrosion resistance, which can work normally in various corrosive media such as strong acids, strong alkalis, and salts. In addition, it also has advantages such as high temperature resistance, wear resistance, and light weight, making it widely used in industries such as petroleum, chemical, metallurgy, and power. Its working principle is to use the valve stem to drive the rotation of the ball, forming different channels between the ball and the valve seat, thereby achieving the opening, closing, and adjustment of the medium. When the sphere rotates 90 degrees, the medium passes through the valve; When the sphere rotates 180 degrees, the medium is completely cut off. Its sealing performance mainly depends on the contact area between the sphere and the valve seat and the performance of the sealing material.
Range
Size from 2” to 24” ( DN50mm to DN600mm).
Pressure ratings from Class 150LB to 2500LB ( PN10 to PN142).
Full bore or reduced bore.
Soft sealed or metal sealed.
RF, RTJ or BW end.
The driving mode can be manual, electric, pneumatic.
Major material: TA1、TA2、TA10、TC4、Gr2、Gr3、Gr5, etc.
Major material: TA1、TA2、TA10、TC4、Gr2、Gr3、Gr5, etc.
Standards
Design: API 608, API 6D, ASME B16.34
Flange Diameter: ASME B16.5, ASME B16.47, ASME B16.25
Face-to-face: API 6D, ASME B16.10
Pressure Test: API 598
Additional Features
1. The ball is supported by upper and lower bearings, reducing friction and eliminating excessive torque generated by the huge sealing load formed by the inlet pressure pushing the ball and sealing seat.
2. The PTFE single material sealing ring is embedded in the stainless steel valve seat, and a spring is installed at the end of the metal valve seat to ensure that the sealing ring has sufficient pre tightening force. Even if the sealing surface wears out during use, it can still ensure good sealing performance under the action of the spring.
3. In order to prevent the occurrence of fire, a fireproof sealing ring is installed between the sphere and the valve seat. When the sealing ring is burned out, under the action of spring force, the valve seat sealing ring is quickly pushed onto the sphere, forming a metal to metal seal, achieving a certain sealing effect. The fire resistance test meets the requirements of APl6FA and APl607 standards.
4. When the pressure of the trapped medium in the valve chamber abnormally increases beyond the pre pressure of the spring, the valve seat will retract and detach from the sphere, achieving the effect of automatic pressure relief. After pressure relief, the valve seat will automatically recover
5. Drain holes are installed on both sides of the valve body to check for leaks in the valve seat. During operation, when the valve is fully open or fully closed, the pressure in the middle chamber can be removed and the packing can be directly replaced; It can discharge residual substances in the middle chamber and reduce the pollution of the medium on the valve.
6. Due to foreign objects in the medium or fire causing accidental failure of the valve seat seal, the grease valve provides a quick connection with the grease gun, and the imported pump conveniently and quickly injects sealing grease into the valve seat sealing area to alleviate leakage.
7. In addition to setting standard sealing rings, O-ring seals are also installed on the packing gland, ensuring the reliability of the valve stem seal with dual sealing; The addition of graphite packing and sealing grease injection minimizes valve stem leakage after a fire. The sliding bearings and thrust bearings of the valve stem make the operation of the valve easy.
8. Full bore or reduced bore structures can be selected as needed. The flow aperture of the full bore valve is consistent with the inner diameter of the pipeline, making it easy to clean the pipeline.
9. According to installation or operation requirements, the valve stem can be extended. Extended rod ball valve, especially suitable for urban gas and other occasions that require buried pipeline laying. The size of the extended valve stem shall be determined according to customer needs.
10. The use of seat and stem bearings with small friction coefficient and good self-lubricating properties greatly reduces the operating torque of the valve. Therefore, even without providing sealing grease, the valve can be operated flexibly and freely for a long time.
Main Components
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Maintenance of titanium alloy valves.
To ensure its normal operation and service life, the valve should be regularly maintained and serviced.
1. Regularly inspect the appearance of the valve to ensure that it is free from defects, damage, and other issues.
2. Regularly lubricate the valve to reduce friction during valve operation and extend its service life.
3. Regularly clean the valve to remove dirt, deposits, etc. on the surface of the valve and ensure its sealing performance.
4. Regularly conduct pressure tests on valves to ensure that their sealing and safety performance meet the requirements.
In summary, titanium alloy ball valves have been widely used in many industries due to their excellent corrosion resistance, high temperature resistance, wear resistance, and other properties. Understanding the relevant knowledge points of titanium alloy ball valves can help us better choose and use this high-performance valve, improve production efficiency and safety.