German Sempell valves Sempell models Sempell prices

Sempell valves include vacuum ball valves, vacuum baffle valves, vacuum venting valves, pneumatic vacuum valves, etc. Their function in a vacuum system is to change the direction of airflow, regulate the flow rate, and cut off or connect pipelines; such components are called vacuum valves.

Sempell valve connection method: Flange connection

This is the most commonly used connection form for valves. According to the shape of the mating surface, it can be divided into the following types: 1) Smooth type: Used for valves with low pressure. Easy to process. 2) Concave-convex type: For higher working pressure, medium-hard gaskets can be used. 3) Tongue-and-groove type: Gaskets with greater plastic deformation can be used. It is widely used in corrosive media and has good sealing effect. 4) Trapezoidal groove type: Uses oval metal rings as gaskets, suitable for valves with working pressure ≥ 64 kg/cm², or high-temperature valves. 5) Lens type: The gasket is lens-shaped and made of metal. Used for high-pressure valves with working pressure ≥ 100 kg/cm², or high-temperature valves. 6) O-ring type: This is a newer flange connection form, developed with the emergence of various rubber O rings. It offers effective sealing connection.

Sempell valve cleaning steps

Valve components must undergo the following processes before assembly: 1) According to processing requirements, some components need polishing; the surface must not have machining burrs, etc.; 2) All components undergo degreasing treatment; 3) After degreasing, perform acid pickling and passivation; the cleaning agent must not contain phosphorus; 4) After acid pickling and passivation, rinse thoroughly with pure water to ensure no chemical residue remains; this step is omitted for carbon steel components; 5) Wipe each component dry with non-woven fabric, ensuring no lint remains on the surface, or blow dry with clean nitrogen; 6) Wipe each component with non-woven fabric or precision filter paper soaked in analytically pure alcohol until no dirt color remains.

Sempell valve fault resolution

Ball valves have long been subjected to material scouring, causing friction and severe impact wear, which fails to meet normal production requirements and shortens equipment service life. Currently, wear-resistant materials such as ceramics and polymer composites are commonly used to address ball valve wear, with established technical systems widely applied. Polymer materials offer superior adhesion and exceptional wear resistance, safely resolving the frequent wear issues of metals and ensuring normal enterprise production. Moreover, the unique ceramic materials and special surface hardening agents in these materials provide wear and physical impact resistance in the harshest dry grinding environments that surpass any steel or even tiles. The product's non-affinity with coal makes it an ideal material for preventing coal accumulation.

Weidou Intelligent Technology professionally sells German Sempell valves, Sempell safety valves, Sempell globe valves, Sempell control valves, Sempell solenoid valves, Sempell ball valves, Sempell proportional valves, Sempell diaphragm valves, Sempell butterfly valves, Sempell hydraulic actuated valves, Sempell check valves, Sempell pressure reducing valves, Sempell relief valves, Sempell sequence valves, Sempell balance valves, Sempell throttle valves, Sempell directional control valves. Original German imports. Welcome inquiries and orders from users.