skivbackventil

Skivbackventil, commonly referred to as a disc check valve, is a type of non-return valve used to prevent backflow in piping systems. The valve consists of a circular disc that sits against a seating surface to form a seal. In forward flow, fluid pressure lifts the disc from the seat, allowing passage. If flow reverses or stops, back pressure or an accompanying spring pushes the disc back onto the seat, blocking the flow.

Construction and variants: Disc check valves are produced in several configurations, including wafer, lug, and flanged styles to fit standard pipe connections. Some designs are spring-assisted, providing rapid closure to reduce backflow and minimize water hammer. The disc and seat materials vary with application, commonly using stainless steel, bronze, ductile iron, or plastics, with elastomeric or metal seats. The choice of materials depends on the fluid, temperature, and pressure requirements.

Applications and performance: Skivbackventiler are used in water distribution, wastewater, heating, ventilation and air conditioning systems, and various industrial processes where backflow must be prevented. They offer low forward-flow resistance and require relatively simple maintenance, but they can be sensitive to debris and improper installation. Closure speed and seal reliability depend on the design and operating conditions.

Installation and maintenance: Proper orientation and installation between flanges are important for reliable operation. Periodic inspection and cleaning of the seat and disc, along with replacement of worn components, help extend service life. They are selected to meet relevant industry standards and compatibility with the conveyed fluid.