German AIR TEK valves, AIR TEK models, AIR TEK prices

With a constant pressure differential across the AIR TEK valve, the flow rate of a standard valve changes little when the opening varies over a wide range, but changes sharply at a certain opening, indicating poor regulation performance. A control valve adjusts the valve core stroke according to the direction and magnitude of the signal to change the valve's resistance coefficient, thereby achieving flow regulation. Control valves are divided into manual and automatic types, with various subtypes exhibiting different regulation performances. Automatic control valves include self-acting flow control valves and self-acting differential pressure control valves.

AIR TEK valve connection method: threaded connection

This is a simple connection method, commonly used for small valves. It is divided into two cases: 1) Direct sealing: internal and external threads directly provide the seal. To ensure no leakage at the connection, lead paste, hemp, and PTFE raw tape are often used for filling; among these, PTFE raw tape is increasingly widely used. This material has excellent corrosion resistance, provides superior sealing, and is convenient to use and store. It can be removed intact during disassembly because it is a non-adhesive film, making it far superior to lead paste and hemp. 2) Indirect sealing: the tightening force of the thread is transmitted to the gasket between the two planes, allowing the gasket to provide the seal.

AIR TEK valve sealing requirements

Valve sealing performance refers to the ability of the valve's sealing parts to prevent medium leakage, which is the most important technical performance indicator of a valve. There are three sealing locations in a valve: the contact area between the closing member and the valve seat sealing surfaces; the mating area between the packing, valve stem, and stuffing box; and the connection between the valve body and bonnet. Leakage at the first location is called internal leakage, commonly known as incomplete closure, which affects the valve's ability to cut off the medium. For shut-off valves, internal leakage is not permitted. Leakage at the latter two locations is called external leakage, where the medium leaks from inside the valve to the outside. External leakage causes material loss, environmental pollution, and can even lead to accidents in severe cases. For flammable, explosive, toxic, or radioactive media, external leakage is strictly prohibited; therefore, valves must have reliable sealing performance.

AIR TEK valve advantages

The electric ball valve structure consists of only a few components, saving material usage; it features small volume, light weight, compact installation dimensions, low driving torque, simple and agile operation, and rapid opening and closing by rotating just 90°; it also offers good flow regulation and tight sealing characteristics. In applications involving large to medium diameters and medium to low pressures, the electric ball valve is the dominant valve type. When fully open, the disc thickness is the resistance to the medium flowing through the valve body, resulting in a small pressure drop and thus good flow control characteristics. Electric ball valves have two sealing types: elastic sealing and metal sealing. For elastic sealing valves, the sealing ring can be embedded in the valve body or attached to the periphery of the disc. Valves with metal sealing generally have a longer service life than those with elastic sealing, but it is difficult to achieve complete sealing. Metal sealing can adapt to higher operating temperatures, while elastic sealing has the disadvantage of being limited by temperature. If an electric ball valve is required for flow control, it is important to accurately select the valve size and type. The structural principle of the electric ball valve is particularly suitable for manufacturing large-diameter valves. Electric ball valves are widely used not only in general industries such as petroleum, gas, chemical, and water treatment, but also in cooling water systems of thermal power stations. Common electric ball valves include wafer-type and flanged types. Wafer-type electric ball valves connect the valve between two pipe flanges using double-headed bolts, while flanged electric ball valves have flanges on the valve, connecting to pipe flanges with bolts. Valve strength performance refers to the ability of the valve to withstand medium pressure. As a mechanical product subjected to internal pressure, the valve must have sufficient strength and rigidity to ensure long-term use without rupture or deformation. A pneumatic ball valve consists of a ball valve equipped with a pneumatic actuator. Pneumatic actuators are divided into double-acting and single-acting types, controlled by solenoid valves to realize ball valve switching actions. Pneumatic ball valves enable intelligent control, rapid opening or closing of pipelines, and effective control and management of pipeline networks.

Weidou Intelligent Technology professionally sells German AIR TEK valves, AIR TEK safety valves, AIR TEK globe valves, AIR TEK control valves, AIR TEK solenoid valves, AIR TEK ball valves, AIR TEK proportional valves, AIR TEK diaphragm valves, AIR TEK butterfly valves, AIR TEK hydraulic transmission valves, AIR TEK check valves, AIR TEK pressure reducing valves, AIR TEK relief valves, AIR TEK sequence valves, AIR TEK balance valves, AIR TEK throttle valves, AIR TEK directional control valves, all original imports from Germany. Welcome customers to inquire and order.