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API gate valves refer to the valves which are made under the regulations set by the American Petroleum Institute. They are usually widely used in petroleum and industrial processing plants, playing an important role at shutting off the flow. And it is true that the featured and core part of them is called the wedge. In order to meet the various specifications, API gate valves are indeed designed a...
Valve seals precisely control the amount of oil entering the valve stem system, making them critical components in maintaining your engine’s compression levels. Having a valve stem seal that works correctly within any of your applications can save you time and money by eliminating the need for lengthy engine repairs and replacements. But how to install valve stem seals, please see below. Installat...
1. Tensile property of valve stem sealing material Tensile property is the first property to be considered for sealing materials, including tensile strength, constant tensile stress, elongation at break and permanent deformation at break. The tensile strength is the maximum stress at which the specimen is stretched to fracture. The constant elongation stress (constant elongation modulus) is the st...
JST seals produce high-quality throttle valve and gate valve equipment seals. Choke packing throttle valve are control valves for production wells, which are used to control the flow of well fluid under production. The throttle valve also compresses the pressure from the reservoir and regulates the downstream pressure in the flow line. Choke packing is available in a variety of types and material ...
PE001 is a carbon-filled PTFE material (Black color), it has better high and low temperature resistance,excellent creep performance, can withstand high pressure for a long time, and is more resistant to extrusion, excellent properties in chemical resistance, wear resistance and wide-range operation temperature. It is usually used as composite seals with energizer, making i...
JST designs and manufactures spring energized lip seals for ball valve. In this article, we will introduce some lip seals used for different sealing application in ball valve. Lip seal type FVR is used for ball valve seat sealing. As shown in picture Fig-1, the FVR lip seal contains four parts. 1- T ring (material: carbon filled PTFE), 2- U ring (material: carbon filled PTFE), 3-Spring (material: ...
Sealing at cryogenic temperatures has its own unique set of challenges. To provide superior protection against leakage in cryogenic valves for LNG, cryogenic seals should be designed with the following properties in mind: Jacket material that tolerates thermal cycling A spring energizer to compensate for shrinkage Anti-extrusion lip geometry JST has a wide range of solutions for cryogenic sealing ...
Sealing for API 6D ball valve and LNG at cryogenic temperatures has its own unique set of challenges. JST has a wide range of solutions for cryogenic sealing applications. The range includes valve stem seals and valve seat seals. Compounds and designs could vary as per specific applications. The material mainly includes polymer jacket (virgin PTFE, filled PTFE, TFM, PCTFE, UHMW-PE, PEEK, etc.) and...
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