German interpak valves interpak models interpak prices

With a constant pressure differential across the interpak 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-operated flow control valves and self-operated differential pressure control valves.

interpak 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 oil, hemp, and PTFE raw tape are often used; 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 oil 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.

interpak valve sealing requirements

The sealing performance of a valve refers to the ability of its sealing parts to prevent medium leakage, which is the most important technical performance indicator. There are three sealing locations in a valve: the contact between the closing member and the valve seat sealing surfaces; the interface 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 shut off the medium. Internal leakage is not allowed for shut-off valves. 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 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.

interpak 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/closing by rotating just 90°; it also offers good flow regulation and tight sealing characteristics. In applications with medium-to-large diameters and medium-to-low pressures, the electric ball valve is the dominant valve type. When fully open, the disc thickness is the only resistance to the medium flowing through the valve body, resulting in a small pressure drop and good flow control characteristics. Electric ball valves have two sealing types: elastic sealing and metal sealing. For elastic sealing valves, the seal ring can be embedded in the valve body or attached to the disc periphery. Metal-sealed valves generally have a longer service life than elastic-sealed valves but are difficult to achieve complete sealing with. Metal seals can withstand higher operating temperatures, while elastic seals have temperature limitations. If an electric ball valve is used 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-type. Wafer-type electric ball valves are connected between two pipe flanges using double-headed bolts, while flanged electric ball valves have flanges on the valve itself, which are bolted to the pipe flanges. The strength performance of a valve refers to its ability to withstand medium pressure. As a mechanical product subjected to internal pressure, it 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 solenoid valves to achieve opening and closing actions. Pneumatic ball valves enable intelligent control, rapid opening or closing of pipelines, and effective control and management of pipeline networks.

Weidou Intelligent Technology specializes in selling German interpak valves, interpak safety valves, interpak globe valves, interpak control valves, interpak solenoid valves, interpak ball valves, interpak proportional valves, interpak diaphragm valves, interpak butterfly valves, interpak hydraulic actuated valves, interpak check valves, interpak pressure reducing valves, interpak relief valves, interpak sequence valves, interpak balance valves, interpak throttle valves, interpak directional control valves, all original imports from Germany. Customers are welcome to inquire and order.