stainless steel lift check valve -凯发彩票

stainless steel lift type flange check valve

product information

key features: chief features :

1. the middle flange bolts 1.bolted bonnet

2. horizontal and vertical pipelines 2.for horizontal or vertical lines
3. swing or lift type discs 3.swing or lift type disc
4. standard flange connection 4.flanged ends

lifting flange check valve properties

1, the valve ends must be blocked at both ends, there is dry and ventilated room. such as long-term storage, should always check the anti-corrosion.
2, the installation should be cleaned before the valve, and eliminate the defects caused in the transport process.
3, the installation must be carefully checked on the valve signs and nameplate is in line with the use requirements.
4, lift vertical flap check valve should be installed in the vertical pipe.
5, lift the level of the valve check valve should be installed in the horizontal pipe.
6, in the pipeline do not make the check valve to bear the weight, large check valve should be independent support, so that the pressure generated by the impact of piping.
7, the installation of check valve, the media should pay special attention to the direction of flow, the media should be the normal flow direction and the direction of the arrow on the valve body is consistent, otherwise it will cut off the normal flow of media. the bottom valve should be installed at the bottom of the pump suction line.
8, the general type of lift check valve should be installed in the horizontal pipe, vertical lift check valve and bottom valve is generally installed in the vertical pipe, and the media from bottom to top flow.
9, the check valve is closed, will produce water hammer in the pipeline pressure, serious will lead to damage to the valve, pipe or equipment, especially for large mouth or high pressure pipeline, it should cause the check valve selection high attention.

★ lifting flange check valve standard:

本阀门在使用过程中，介质按图示箭头方向流动。
1，当介质按规定方向流动时，阀瓣受介质力的作用，被开启介质逆流时，因阀瓣自重和阀瓣受介质反向力的作用，使阀瓣与阀座的密封面密合而关闭，达到阻止介质逆流的目的。
2，阀体及阀瓣的密封面采用不锈钢堆焊。
3，本阀门的结构长度按gb12221-1989的规定，法兰连接尺寸按jb/t79-1994的规定

升降式法兰止回阀产品规范 product specification

升降式法兰止回阀主要零部件材料 main part material

升降式法兰止回阀主要外形和连接尺寸main external and connection

主要外形和主要连接尺寸main external and connection dimension