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JST SealsItem NO.:
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50Ball valve seat seals for Cryogenic Valve and LNG Application
The BVR series is made of a canted level spring and a polymer jacket, which is mainly used as a seat seal.
The cryogenic valve seat seals for 6D Ball valve is mainly used for single-piston valve seat of 6D ball valve (temperature range IS-50~260 pressure range can reach 2500LB). A support ring is needed to protect the sealing lip when the reverse pressure in the middle cavity exceeds 1.33 times of rated pressure. When it is above 1500LB, need to add back-up ring the bottom.
According to different working conditions and application, JST will make related adjustments to the products, including but not limited to: changing the seal jacket material, changing the spring technology, adding T cover, adding gaskets, etc.
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Advantages:
1. Material compound passed API 6A FF/HH Immersion Testing; |
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Working Conditions |
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Temperature range |
Pressure |
Medium |
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-50~180℃ |
150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB |
LNG, Low temperature ethylene |
| API 6D Stem Seal selection table | ||||||
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Groove DWG:
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| Temperature Rating | JST Series | Spring | 0~900（LBS) | 900~2500(LBS) |
G=(OD-ID)/2
Standard CS:G=(OD-ID)/2
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L Value |
| (-50℃~180℃) | BVR |
Elgiloy
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 |
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3.1 | 7 |
| 4.55 | 9 | |||||
| 6.1 | 13 | |||||
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Categories
Bidirectional high-pressure ball valve seat seal is a type of seat sealing that can withstand bidirectional pressure, with good low-temperature performance and airtightness, and is widely used in 6D ball valves.
JST FHR series is made of a helical wound spring and a polymer jacket, which is mainly used for rod.
JST FHP series is made of a helical wound spring and a polymer jacket, which is mainly used for piston.
The FHB seal is made of a helical wound spring and a polymer jacket, which is mainly used as a Flange internal face seal.
The spring energized seal is widely used in medical equipment, which is generally composed of a corrosion resistant spring and a seal ring made of U-shaped filled PTFE/UPE material.
JST's back up ring compensate for large temperature fluctuations. Using Back-up Rings allows O-Rings to be utilized in higher pressure applications, where larger extrusion gaps are required and where there are reciprocating or rotating movements. Back-up Rings are protective and supporting elements with no sealing function. The back up ring material could be PEEK, modified PTFE.
ID Face Seal for Cameron Type FLS Gate Valves, are spring-loaded, pressure-energized lip seal that improve gate and seat service life for all Cameron style FLS gate valves.
Hammer Union Seals are used in hammer union-style pipe connections to establish flow lines and prevent leakage. It is widely used in the oil & gas industry.
For inquiries about our products or pricelist, please leave to us and we will be in touch within 24 hours.
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