2. lift check valve
For the check valve whose disc slides along the vertical center line of the valve body, the lift check valve can only be installed on the horizontal pipeline, and the disc on the high-pressure small-diameter check valve can adopt a ball. The body shape of the lift check valve is the same as that of the stop valve (which can be common with the stop valve), so its fluid resistance coefficient is large. Its structure is similar to the stop valve, and the valve body and disc are the same as the stop valve. The upper part of the valve clack and the lower part of the valve cover are machined with a guide sleeve. The guide sleeve of the valve clack can rise and fall freely in the guide sleeve of the valve cap. When the medium flows downstream, the valve clack is opened by the thrust of the medium. When the medium stops flowing, the valve clack falls on the valve seat by itself to prevent the reverse flow of the medium. The direction of the medium inlet and outlet channel of the straight through lift check valve is perpendicular to the direction of the valve seat channel; For the vertical lift check valve, the direction of the medium inlet and outlet channel is the same as that of the valve seat channel, and its flow resistance is smaller than that of the straight through type.
3. disc check valve
A check valve in which the disc rotates about a pin in the seat. The disc check valve has simple structure and can only be installed on the horizontal pipeline with poor sealing performance.
4. pipeline check valve
A valve in which the disc slides along the centerline of the valve body. Pipeline check valve is a new type of valve. It has small volume, light weight and good processing technology. It is one of the development directions of check valve. However, the fluid resistance coefficient is slightly larger than that of swing check valve.
5. compression check valve
This valve is used as boiler feed water and steam shut-off valve. It has the comprehensive function of lift check valve, stop valve or angle valve.
Nortech is one of the leading industrial valve manufacturers in China with quality certification ISO9001.
Major products: Butterfly Valve, Ball Valve,Gate Valve, Check Valve, Globe Vavlve,Y-Strainers, Electric Acurator , Pneumatic Acurators .
For more interest, welcom to contact at: Email: sales@nortech-v.com
Post time: Jun-06-2022