Products Description
A check valve is a valve whose opening and closing parts are circular discs and which rely on their own weight and medium pressure to produce movement to block the backflow of the medium. It belongs to the category of automatic valves, also known as non-return valves, one-way valves, reflux valves or isolation valves. The disc movement modes are divided into lifting type and swing type. The lifting check valve is similar to the stop valve in structure, only lacking the valve stem that drives the disc. The medium enters from the inlet end (the swing check valve has a disc that is tilted and can rotate around the axis, and its working principle is similar to that of the lifting check valve. The check valve is often used as a bottom valve of a pumping device to prevent the backflow of water. The check valve is used in combination with the stop valve to play a role of safety isolation. The disadvantage is that the resistance is large and the sealing is poor when closed.
Product Features
● The "bullet head" design is adopted, and the body has a "drum" shape design, which improves the media flow valve and reduces the flow resistance coefficient
●The short-form valve structure is used. Although the head loss is slightly larger than the silent check valve valve lift, it is small in size and cheap
● The structure is compact, and a lubricating non-metallic sleeve is provided between the guide shaft and the guide frame, and the valve lift and flexibility are not generated. It will not cause locking phenomenon
●The rubber seal is directly installed on the main frame to avoid long-term direct media sealing, which has a significantly longer service life and is durable
● It is suitable for water supply and drainage systems, high-rise building pipe networks, and can be installed at the outlet of the pump. The structure is modified and can be used as a suction bottom valve
Product Specification
| Nominal pressure | PN1.6~16.0MPA |
| Applicable media | Water, oil, nitric acid, acetic acid and other media, steam |
| Diameter | DN50～800mm |
| Applicable temperature | -196℃～550℃ |
| Valve body material | Carbon steel, stainless steel, alloy steel |
| Application Areas | Commonly used valves in chemical industry, electricity, petroleum |
Product Dimensions
Product Features
● The "bullet head" design is adopted, and the body has a "drum" shape design, which improves the media flow valve and reduces the flow resistance coefficient
●The short-form valve structure is used. Although the head loss is slightly larger than the silent check valve valve lift, it is small in size and cheap
● The structure is compact, and a lubricating non-metallic sleeve is provided between the guide shaft and the guide frame, and the valve lift and flexibility are not generated. It will not cause locking phenomenon
●The rubber seal is directly installed on the main frame to avoid long-term direct media sealing, which has a significantly longer service life and is durable
● It is suitable for water supply and drainage systems, high-rise building pipe networks, and can be installed at the outlet of the pump. The structure is modified and can be used as a suction bottom valve
Product Dimensions
Product Specification
| Nominal pressure | PN1.6~16.0MPA |
| Applicable media | Water, oil, nitric acid, acetic acid and other media, steam |
| Diameter | DN50～800mm |
| Applicable temperature | -196℃～550℃ |
| Valve body material | Carbon steel, stainless steel, alloy steel |
| Application Areas | Commonly used valves in chemical industry, electricity, petroleum |
