German Pister Kugelhaehne valves Pister Kugelhaehne models Pister Kugelhaehne prices

Pister Kugelhaehne valves: With a constant pressure differential across the valve, the flow rate of a standard valve changes little when the opening varies over a wide range. However, at a certain opening, the flow rate changes sharply, 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. Both manual and automatic control valves come in many varieties with different regulation performances. Automatic control valves include self-operated flow control valves and self-operated differential pressure control valves.

Pister Kugelhaehne valve connection type: Threaded connection

This is a simple connection method, commonly used for small valves. It is divided into two cases: 1) Direct sealing: The internal and external threads provide the sealing directly. To ensure no leakage at the connection, lead paste, hemp yarn, and PTFE raw tape are often used as fillers. 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. During disassembly, it can be removed intact because it is a non-adhesive film, making it far superior to lead paste and hemp yarn. 2) Indirect sealing: The tightening force of the thread is transmitted to the gasket between the two planes, allowing the gasket to provide the sealing.

Pister Kugelhaehne valve sealing requirements

Valve sealing performance refers to the ability of the valve's sealing parts to prevent medium leakage. It 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 interface between the packing, the valve stem, and the stuffing box; and the connection between the valve body and the 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.

Pister Kugelhaehne valve advantages

The electric ball valve structure consists of only a few components, saving material usage; it is small in volume, light in weight, has compact installation dimensions, requires low driving torque, is easy and quick to operate, and can be rapidly opened or closed by rotating just 90°. It also offers good flow regulation capabilities 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 the electric ball valve is fully open, the disc thickness is the resistance to the medium flowing through the valve body, resulting in a very 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 withstand higher operating temperatures, whereas elastic sealing has the disadvantage of being limited by temperature. If an electric ball valve is required for flow control, it is important to select the correct 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 plants. Common electric ball valves include wafer-type and flanged-type. Wafer-type electric ball valves are connected between two pipe flanges using double-headed bolts. Flanged electric ball valves have flanges on the valve, which are bolted to the pipe flanges at both ends. Valve strength performance refers to the valve's ability to withstand medium pressure. As a mechanical product subjected to internal pressure, a valve must have sufficient strength and stiffness 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 a solenoid valve, they realize the opening and closing action of the ball valve. Pneumatic ball valves enable intelligent control, rapid opening or closing of pipelines, and effective control and management of the pipeline network.

Weidou Intelligent Technology specializes in selling German Pister Kugelhaehne valves, Pister Kugelhaehne safety valves, Pister Kugelhaehne globe valves, Pister Kugelhaehne control valves, Pister Kugelhaehne solenoid valves, Pister Kugelhaehne ball valves, Pister Kugelhaehne proportional valves, Pister Kugelhaehne diaphragm valves, Pister Kugelhaehne butterfly valves, Pister Kugelhaehne hydraulic transmission valves, Pister Kugelhaehne check valves, Pister Kugelhaehne pressure reducing valves, Pister Kugelhaehne relief valves, Pister Kugelhaehne sequence valves, Pister Kugelhaehne balance valves, Pister Kugelhaehne throttle valves, Pister Kugelhaehne directional control valves. Original German imports. Welcome inquiries and orders from customers.