In simple industrial butterfly valves the shaft is located in the centre of the disc. The disc in high performance butterfly halves is eccentric: the shaft is offset from the centreline of the valve body, the geometry of the disc/seat sealing surface is altered (conical profile). These valves are used for more challenging applications, or [...]
The most common seal material used for ball valves is pure PTFE (high chemical resistance), or PTFE with glass fibre filler (increased abrasion resistance), graphite (high temperature resistance) and even stainless steel (abrasion and high temperature resistance). There are also seals made of PEEK (high strength and temperature resistance), and PA or POM used in [...]
The nominal pressure for typical valves is usually specified at room temperature (about +20°C). There is often a relationship between working pressure and working temperature for industrial valves. As the working temperature increases, the allowable working pressure for the valve decreases. To determine the value of the allowable working pressure, tables or diagrams showing the [...]
Industrial valves can be divided according to their function, material, construction, etc. Based on their function, industrial valves can be divided into: shut-off, control and safety valves. The most common classification of industrial valves based on their construction: ball valves, gate valves, poppet valves, butterfly valves (throttle valves), non-return valves, diaphragm valves and safety valves. [...]
Yes. UHP rubber hoses, that is, Waterblast hoses come with inner and outer layers of synthetic rubber, which is suitable for water. In hydraulic hoses, the rubber is also synthetic, but is not suitable for water - it is designed for hydraulic oil. Thermoplastic hydraulic hoses usually have an inner layer of polyester, sometimes polyamide. [...]
Yes, according to ISO19880-5, pressure can reach up to 700 bar in hydrogen refuelling systems.
The abbreviation UHP stands for ultra high pressure, with up to 4000 bar for Spir Star hose assemblies.
When selecting a pressure reducing valve, apart from the supply pressure and operating temperature, it is necessary to take into account the required flow rate which is related to the size of a connection. Whereas the control range should be matched to the required operating pressure (a pressure reducing valve maintains the set value more [...]
A lubricator is recommended for: - operation in a damp and dusty environment, - operation of actuators at speeds > 1 m/s, - valve switching frequency > 3 Hz.
Depending on the application, compressed air filters are equipped with filter elements of different gradations. A filtration level, expressed in micrometres (µm), determines the size of particles above which the particles are retained by the filter. The most common levels of filtration: Pre-filtration (coarse) - 5µm or 20µm filter element Fine filtration - 0.01 µm [...]
