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JST ESY series design is commonly used as dynamic seal for ball valve stem, and the ESY with various V rings and T shape support rings could be used for fugitive emission valves, meeting the requirements of ISO-15848.
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GuangzhouOrder(MOQ):
50ESY Series Fugitive Emission Ball Valve Stem Seal
JST ESY series design is commonly used as dynamic seal for ball valve stem, and the ESY with various V rings and T shape support rings could be used for fugitive emission valves, meeting the requirements of ISO-15848. The seal materials are good at air sealing, compatible with oil, gas or other chemicals with acid, alkali or H2S.
This ESY design consists of U shape jacket, spring, v ring, C shape anti-extrusion ring and T shape support ring. The T shape support ring is able to protect the U shape jacket avoiding damage to the lip.
Technical requirements:
● Working pressure: ≤10,000PSI
● Working temperature: -100℃~+260℃
Materials:
● U shape jacket: modified PTFE (PE001), resistant to high temperature & high pressure, good wear resistance and low creep;
● V ring: modified PTFE (PE001), resistant to high temperature & high pressure, good wear resistance and low creep;
● V ring: Virgin PTFE (P1020), very low friction coefficient, strong air sealing and ultra-low temperature resistance;
● T shape ring: PEEK (PK002), high strength, corrosion resistance and wide application temperature range;
● C shape ring: PEEK (PK002), high strength, corrosion resistance and wide application temperature range;
● Spring: golden color alloy spring, corrosion resistance, resistant to high & low temperature.
Characteristics:
● Resistant to high temperature & high pressure;
● Compatible with chemicals of acid, alkali or H2S;
● Low friction and low gas leakage rate.
Note: Choose different materials according to different working conditions. If you have special requirements (pressure, temperature, speed, special chemicals, etc.), please contact our company.
Groove recommendation:
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Stem ID(h8）/mm |
CS G/mm |
OD OD(H8)/mm |
ESYmin. size L(+0.2,0) |
Chamfering length Min. sizeH/mm |
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15~90 |
5.0 |
ID+2G |
20 |
6 |
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25~300 |
9.525 |
ID+2G |
42 |
9.5 |
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Other CS |
Can customize as per groove size |
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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Categories
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