Your position:Home -> News NEWS

Mounting requirements for gasket caps

Date:2013-2-3 09:46
1, gasket gasket and flange sealing surface should be cleaned, shall not have any influence on the sealing performance of scratches, spots and other defects exist.
2, the sealing gasket than the flange sealing surface diameter should be small, the gasket diameter should be slightly larger than the inner diameter of the pipe diameter, two difference 2 times the thickness of the gasket, to ensure that the gasket is compressed, not into the inner edge of a container or a pipe, so as not to impede the flow of liquid container or pipeline flow.
3, the gasket preload should not exceed the design requirements, so as to avoid excessive compression gasket, loss of resilience.
4, when sealing gasket is pressed, it is better to use torque wrench. For large bolts and high strength bolts, it is better to use hydraulic tightening devices. The tightening torque shall be calculated by calculation according to the given gasket. The size of the hydraulic pressure of the hydraulic tightening device shall also be determined by calculation.
5. When installing the gasket, tighten the nut in sequence. However, the design value should not be screwed once. Generally should be recycled at least 2~3 times so that the gasket can be evenly distributed.
6, the flammable and explosive medium pressure vessel and piping, replacing gasket should be used to avoid security tools, tool and flange bolts or collide, sparks, causing a fire or explosion accident.
7, if there is leakage of the pipeline, it is necessary to reduce the pressure, then replace or adjust the installation of gasket, strictly prohibited with pressure operation.
TypeInfo: Company news Keywords for the information: