How to select the right valve for your pipeline

The medium transported basically determines the selection of valves. Pressure and temperature are important criteria. The valve best suited for a particular pressure and temperature can be determined from the technical data of the respective valve. The selection of the material for the valve seals needs to be selected. This is best decided by consulting the chemical resistance list. Also to be considered is compressible media. Suitable materials for compressible media are those that under standard conditions and at low temperatures do not tend toward brittle fractures owing to their ductility. Such materials include polyethylene (PE) and acrylonitrile-butadiene-styrene (ABS). All other raw materials such as polypropylene (PP-H), polyvinyl chloride (PVCU/-C) or polyvinyliden fluoride (PVDF) are to be limited to ≤ 0.1 bar with respect to the operating pressure of gases. Higher pressures are possible if secondary containment piping systems are used (for environmental protection, brittle effects, gas shocks,...