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The Valve Seats are used for regulating fluid flowing through a section of pipe, and it is a demountable component in valve for ensuring the valve is completely off at the right position. Also, using the filled PTFE compound could provide an better wear resistance, high temperature resistance and high pressure resistance.
Main Features
Excellent chemical resistance
Extremely resistant to aging
Dimensional stability
Resistance to stress cracking
Lower torque, easy to operate the ball valve
Excellent sealing performance in clean service application
Typical Applications
Ball valves
Process valves
Materials Selection Guide
One of the most important factors affecting shutoff capability is the nature of media being handled. Service life is affected by all of the following factors such as pressure, temperature, degree of pressure fluctuation and thermal fluctuation, type of media, cycling, frequency, velocity of media & speed of valve operation. The following seat & seal materials can be used in various valve such as ball, plug, butterfly, needle, etc.
Material Selection
| Materials | Characteristics | Temperature Range |
| Virgin PTFE | This valve seat has a high chemical resistance and excellent sealing performance. | -200°C ~ +260°C |
| Modified PTFE | Excellent resistance to creep or compression and abrasion service, featuring of high elasticity and resilience. Also it has a good chemical resistance so they can be used for a wide range of chemical industry. | -200°C ~ +260°C |
| PTFE + carbon fibre | With the additional added carbon fibre, this valve seat has a high mechanical strength and abrasion resistance. | -200°C ~ +260°C |
PTFE + carbon/graphite | PTFE's mechanical properties are enhanced by adding percentage of filler material to provide improved strength, This valve seat can be used at a temperature as high as 300°C ,the highest service temperature among based ball seats. | -200°C ~ +300°C |
| PTFE + glass fibre | This material is compounded with a percentage of fiber glass to provide additional strength, size stability and resistance to abrasive wear, cold flow and permeation in molded seats. It could be applied at higher temperature, pressure applications. | -200°C ~ +260°C |
| PEEK | PEEK has good chemical resistance, and also high temperature tolerance. Ideal for high pressure applications. It performs very well if exposed toradiation. | -40°C ~ +260°C (short periods +310°C) |
| PCTFE | PCTFE is well suited for cryogenic parts such as ball valve seats. | -240°C ~ +120°C |
| UHMW-PE | UHMW-PE is a durable, long-wearing,corrosion resistant material. It meets FDA acceptance for food and pharmaceutical equipment and is a good performance in applications up to 80°C . Also UHMW-PE is ideal for applications such nuclear, tobacco, and low temperature. | -260°C ~ +80°C |
Your Benefits
Our extensive manufacture experience and material could assures a close tolerance. This guarantees that the valve seats will fit and seal in whatever climate the seals are used.
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