English
BALL VALVE SEAT INSERT MATERIALS
创建于2024.08.06
1. Synthetic rubber
The comprehensive properties of synthetic rubber such as oil resistance, temperature resistance and corrosion resistance are better than those of natural rubber. Generally, the use temperature of synthetic rubber is t ≤ 150 °C, natural rubber is t ≤ 60 °C, and rubber is used for sealing valves such as globe valves, gate valves, diaphragm valves, butterfly valves, check valves, and pinch valves with nominal pressure PN ≤ 1MPa.
2. Nylon
Nylon has the characteristics of low coefficient of friction and good corrosion resistance. Nylon is mostly used for ball valves and globe valves with a temperature of t ≤ 90°C and a nominal pressure of PN ≤ 32MPa.
3. PTFE
PTFE is mostly used for globe valves, gate valves, ball valves, etc. with a temperature of t ≤ 232°C and a nominal pressure of PN ≤ 6.4MPa.
4. Cast iron
Cast iron is used for temperature t ≤ 100°C, nominal pressure PN ≤ 1.6MPa, gate valves, globe valves, plug valves for gas and oil, etc.
5. Babbitt
Babbitt alloy is used for ammonia globe valves with temperature t -70~150°C and nominal pressure PN ≤ 2.5MPa.
6. Copper alloy
Common materials for copper alloys include 6-6-3 tin bronze and 58-2-2 manganese brass. Copper alloy has good wear resistance, suitable for water and steam with temperature t ≤ 200°C and nominal pressure PN ≤ 1.6MPa, and is often used in gate valves, globe valves, check valves, plug valves, etc.
7. Chromium stainless steel
The commonly used grades of chromium stainless steel are 2Cr13 and 3Cr13, which have been quenched and tempered and have good corrosion resistance. It is commonly used in valves for water, steam and petroleum media with a temperature of t ≤ 450°C and a nominal pressure of PN ≤ 32MPa.
8. Incontinol stainless steel
The commonly used grade of chromium-nitinol stainless steel is 1Cr18Ni9ti, which has good corrosion resistance, erosion resistance and heat resistance. It is suitable for steam, nitric acid and other media with temperature t ≤ 600°C and nominal pressure PN ≤ 6.4MPa, and is used for globe valves, ball valves, etc.
9. Nitriding steel
The commonly used grade of nitriding steel is 38CrMoAlA, which has been carburized and has good corrosion resistance and abrasion resistance. It is commonly used in power station gate valves with temperature t ≤ 540°C and nominal pressure PN ≤ 10MPa.
10. Boronization
Boron infiltration is directly processed from the valve body or disc body material to produce the sealing surface, and then the boron infiltration surface is treated, and the sealing surface has good wear resistance. It is used for power station blowdown valves.
Contact
Leave your information and we will contact you.