精品国产一区二区三区四区阿崩-曰韩精品无码一区二区视频-天天狠天天天天透在线-欧美性插b在线视频网站-高潮流白浆潮喷在线播放视频

DRVZ(H42X) silent check valve is mainly composed of valve body, seat, guide body, disc, bearing and spring and other main parts. The internal flow passage adopts linear design with minimal pressure loss.The opening and closing stroke of the valve disc is very short. It can be closed quickly when the pump stops to prevent the huge water hammer sound. It has the characteristics of quiet closing.The valve is mainly used for water supply and drainage, fire fighting, hvAC system, can be installed in the pump outlet, to prevent backflow and water hammer damage to the pump.

Product model: DRVZ
Nominal diameter: DN40~600mm
Nominal pressure: PN1.0~ 2.5MPa
Applicable temperature: 0~80℃
Suitable medium: water
Main material: cast iron, ductile iron, carbon steel, etc