Products Description
The valve stem packing seal is an essential component of valves, which is covered around the valve stem. The purpose of valve packing is to prevent leakage.
Valve Stem Packing Seal for FLS-R Gate Valve
Valve stem packing seal has good sealing performance under working pressure and a certain temperature range, and can automatically improve the sealing performance with the increase of pressure, which is suitable for type FLS and FLS-R gate valves. This seal has passed the PR2 tests. They are built to meet the American Petroleum Institute's high standards for design, materials, function, and performance.
Advantages
1. The friction between the sealing ring device and the moving parts should be small, and the friction coefficient should be stable.
2. The sealing ring has strong corrosion resistance, is not easy to age, has a long working life, has good wear resistance, and can automatically compensate to a certain extent after wear.
3. The structure is simple and easy to use and maintain so that the sealing ring has a long life.
Structural Design
Structural Composition: The valve stem packing consists of multiple parts, including the sealing ring element, support ring/activation ring, spring-activated lip seal ring, and adapter ring.
Design Advantages: Design, materials, functions, and performance by API standards; size range from 2-1/16" to 7-1/16"; pressure range from 5,000 to 15,000 PSI; PR2 test.
Material Composition: The seal consists of a PTFE shell and a filling material, which can be NBR, Viton, HNBR, etc. to adapt to different working conditions.
Functions
Prevents leakage: The main function of the stem seal is to prevent liquid or gas from leaking through the gap between the stem and the bonnet.
Reduces operating torque: The unique ball screw design of the FLS-R valve allows rolling friction instead of sliding friction, reducing the torque required for operation.
Allows Stem Movement: The packing seal provides sealing without impeding stem movement.
| Operation conditions | ||
| Pressure | Medium | Material |
| 5000~15000PSI | Hydraulic fluids, crude oil, sour oil/gas, H2S, salty water | PEEK, Elgiloy/SS steel, Filled PTFE |
about Us
Linde Polymer Tec Co., Ltd. mainly produces a variety of rubber compounds and rubber seals and currently has more than 3,000 material formulas and more than 2,000 product specifications. Products are suitable for automotive, aviation, machinery, petrochemical, medical, food, electronics, military, industrial, and other fields. Since the establishment of the factory, the company has completed the process consistency operation, and the product yield rate has reached 97.1%.
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R&D Advantages
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Manufacturing Advantages
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Product Advantages
Certification
Quality Management and Environmental Management Certification
Contact US
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amy@lindepolymer.com
mina@lindepolymer.com
+8613159203761
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