Views: 0 Author: Site Editor Publish Time: 2023-12-08 Origin: Site
Seal Liner is a kind of seal spare part used for machinery, equipment and pipelines as long as liquid is present. It uses internal and external materials for sealing. Seals are made of metallic or non-metallic plate-like materials by cutting, punching or cutting processes and are used to seal connections between pipes and to seal connections between machine and equipment parts.
What are the precautions to use Seal Liner?
What are the installation requirements for the Seal Liner?
What are the steps to install the Seal Liner?
1.When installing the Seal Liner matching the protruding face flange, make sure that the gasket is concentric to the pipeline. Generally, the outer reinforcement ring is used to touch the inner circumferential surface of the screw for positioning, and eccentric installation is not allowed. When installing the wound base seal in the groove-spring sealing surface flange, ensure equal distance to the groove wall.
2.When installing a small width metal coated gasket into the Seal Liner, a steel plate of a certain thickness should be placed on the outside of the gasket, and then the flange should be compressed to prevent the metal sheath from being compressed after the coating pack has been compressed in the metal gasket. The interface (or overlap) expands and damages the Seal Liner.
1.The sealing surface of the Seal Liner and flange should be cleaned and there should be no scratches, stains and other defects affecting the sealing performance of the joint.
2.The outer diameter of the Seal Liner should be smaller than the outer diameter of the flange sealing surface, and the inner diameter of the Seal Liner should be slightly larger than the inner diameter of the pipe. Do not protrude into the container or tube so as not to obstruct the flow of liquid in the container or tube.
3.The preload force of the Seal Liner should not exceed the design regulations to prevent the Seal Liner from being compressed too much and losing its elasticity.
4. It is best to use a torque wrench to press the Seal Liner. For large and high strength screws, it is best to use hydraulic tensioners. The tightening torque should be calculated according to the specified seal, and the oil pressure of the hydraulic tensioner should also be calculated.
What are the steps to install the Seal Liner?
1. Tighten the nuts one by one when installing the Seal Liner. However, it should not even be screwed to achieve the design value. In general, it should be passed through at least 2 to 3 times cyclically so that the stress distribution of the sealing liner film is uniform.
2.For pressure vessels and pipelines with flammable and explosive media, safety tools should be used when replacing the Seal Liner to avoid sparks caused by collisions of the tool with flanges or screws, leading to fire or explosion accidents.
3.If the pipeline is leaking, it must be unpressurized before the installation of the gasket is replaced or adjusted. Operation under pressure is strictly prohibited.
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