Linde Polymer Tec Co.,Ltd. is one of the most experienced manufacturers and suppliers of high pressure ball valve seat seals in China, also supports customized service. Please feel free to buy high quality high pressure ball valve seat seals for sale here from our factory.
What are High Pressure Ball Valve Seat Seals
The ball valve seat seal is a key sealing component, used to ensure the sealing performance of the high-pressure ball valve in the closed state and prevent fluid leakage and wear of valve components. High pressure ball valve seat seals are usually made of materials that are resistant to high pressure, wear, and corrosion, such as polytetrafluoroethylene (PTFE), etc. These materials have good sealing properties and chemical stability, providing reliable sealing under high pressure and corrosive conditions.
Structural characteristics
■ Double seal structure: High-pressure ball valve seat seal usually adopts a double seal structure, namely inner seal and outer seal. The inner seal refers to the seal between the seat seal and the ball, while the outer seal refers to the seal between the seat seal and the valve body. This double-sealing structure can provide more reliable sealing performance and effectively prevent fluid leakage.
■ Seat seal material selection: The material selection of the high-pressure ball valve seat seal is very important. Commonly used materials include polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), and other high-pressure and corrosion-resistant materials. These materials have good sealing properties and chemical stability, providing reliable sealing under high pressure and corrosive conditions.
■ Seat seal structural design: The structural design of the high-pressure ball valve seat seal usually considers the following factors. The first is the shape and size of the seat seal, which needs to match the structure of the ball and valve body to achieve a good sealing effect. The second is the elastic design of the seat seal, which can adapt to the movement of the ball and changes in pressure and maintain good sealing performance. In addition, seat seals often have structures to prevent fluid penetration, such as auxiliary seals or gaskets.
■ Sealing force adjustment: Some high pressure ball valve seat seals have a sealing force adjustment function that can be adjusted as needed. This adjustment is usually achieved by adjusting the pressing force of the seat seal or the setting of the adjustment device to ensure that appropriate sealing force can be maintained under different working conditions.
Production Process
1. Material preparation: Choose materials suitable for high-pressure and corrosive environments, such as polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), etc. Materials need to be inspected and screened to ensure their quality meets requirements.
2. Mold manufacturing: According to the design requirements, the mold for the seat seal is manufactured. The design and manufacture of the mold need to consider the shape and size of the seat seal, as well as the characteristics of the material.
3. Mold injection molding: Heat the prepared material to the appropriate temperature and then inject it into the mold. During the injection molding process, the temperature and pressure are controlled so that the material fills the mold and forms the predetermined shape of the seat seal.
4. Sintering or curing: Depending on the characteristics of the material, the seat seal may need to be sintering or curing. Sintering is heating materials to a certain temperature so that they melt and combine to form a solid structure. Curing refers to exposing a material to the appropriate temperature and time to solidify it into a solid state.
5. Processing and adjustment: After sintering or curing, the seat seal may need to be processed and adjusted to meet design requirements. This may include cutting, trimming, grinding, and other processes to ensure the seat seal is accurate in size and shape.
6. Quality inspection: Carry out quality inspection on the produced seat seals. This includes visual inspection, dimensional inspection, sealing performance testing, etc. to ensure that the seat seal meets the required quality standards.
7. Packaging and storage: Pack the seat seals with qualified quality and store them properly. The packaging is usually moisture-proof and dust-proof to ensure that the seat seal is not damaged during transportation and storage.
The above is the production process of high pressure ball valve seat seals under normal circumstances. Specific process flows and steps may vary based on different manufacturers and product requirements.
Working conditions and dimensions
| Working Conditions | ||
| Temperature range | Pressure | Medium |
| -100~180℃ | ≤400 bar | Gas, water |
| Cross section NO. | O ring section diameter | Recommended inner diameter range d(mm) | Width of groove L(mm) | Depth of groove G(mm) | Maximum gap(mm) | Maximum fillet radius R1(mm) | |
| ≥ | ＜ | ||||||
| A | 1.78 | 4 | 10 | 2.4 | 1.45 | 0.13 | 0.4 |
| B | 2.62 | 10 | 20 | 3.6 | 2.25 | 0.13 | 0.4 |
| C | 3.53 | 20 | 40 | 4.8 | 3.1 | 0.15 | 0.6 |
| D | 5.33 | 40 | 120 | 7.1 | 4.7 | 0.17 | 0.8 |
| E | 6.99 | 120 | 700 | 9.5 | 6.1 | 0.25 | 0.8 |
| F | Non-standard items (please specify groove dimensions when ordering) | ||||||
*Special reminder, if you need this seal product, please provide us with the corresponding drawings so that we can provide you with better help.
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