In order to ensure that the installed flange does not leak oil, what problems should be paid attention to during installation? 1. The flange shall have sufficient strength and shall not be deformed during fastening. The flange sealing surface shall be smooth and clean, and oil stains and rust spots shall be carefully cleaned during installation. 2. The gasket should have good oil resistance and aging resistance, as well as good elasticity and mechanical strength. Installation should be based on the shape of the joint selection of different cross-section and size of the gasket, and placed correctly. 3, flange tightening force should be uniform, rubber pad compression should be controlled in 1/3 left.

孔板法兰的连接方式和普通的法兰有何不同？ 就是把两个管道、管件或器材，先各自固定在一个法兰盘上，两个法兰盘之间，加上法兰垫，用螺栓紧固在一起，完成了连接。 孔板法兰是孔板流量计上将孔板连接（孔板流量计的测量部分）到管道上，两面法兰将孔板固定在中间，通过法兰上的取压点，引到差压变送器上，来测量流量。

The flange is used for positioning. For example, there is an installation method for the oil cylinder called flange installation. For example, four symmetrical holes are punched around the cuboid, and a large hole is in the middle with the same outer diameter as the oil cylinder. The cuboid is sleeved on the oil cylinder and can be fixed together in other ways after welding. The oil cylinder and other things are connected by the four holes around the cuboid, and the cuboid can be called flange.