亚洲精品国产成人AV麻豆_成人毛片18女人毛片免_熟妇无码视频在线播放_日日夜夜狠狠操B视频_激情无码综合一区二区_欧美国a级毛一级_黄色三级在线观看_苍井空无码丰满尖叫高潮_妺妺窝人体色WWW网站孕妇_2021给个免费网站好人有好报

Technical Parameters

Product model: H61Y/H
Nominal diameter: DN10~200mm
Nominal pressure: PN10~32MPa
Working temperature: ≤450°C
Design and manufacture: ASME B16.34, JB/T3595, E101
Pressure temperature: ANSI B1 6.34, JB/T74, JB/T3595, E101
Structure length: ANSI B16.10, E101, GB/T15188.1, JB/T2766
Butt welding connection size: ASME B16.25, GB/T12224, E101
Inspection and test: ISO5208, GB/T13927, JB/T3595

Product description

The two ends of the branch pipe of the power station lifting check valve are welded knots, and the welded junction groove can be made according to standards or user requirements. It is suitable for thermal power plants, petrochemical industry, metallurgy and other high temperature and high pressure water, steam, oil, superheated steam pipelines as a device to prevent medium backflow.

Structural features

1. The valve disc is quenched as a whole, and can move up and down the valve body, and when the medium flows back, the automatic disc is closed by medium pressure and spring.
2. The valve body and bonnet are die forgings.
3. The sealing surface on the valve seat is made of cobalt-based cemented carbide plasma spray welding surface. Good abrasion resistance and anti-scratch performance.
4. The check valve should be installed on the horizontal pipeline, and the medium flow direction is from bottom to top (positive flow).

Key Performance Specifications

Main connection size  H61Y/H -250/320/P55140V/P55170V