What are the use of all - way ball valves and reducing ball valves respectively? What are the advantages?
According to the API6D standard, valve necking and full size two, valve necking in DN300 and shrinkage within a specification, 250-600 and two specifications of more than 600, according to the contract agreement; ^/ & H6 D2 O; H& oAccording to the GB standard, the ball valve is divided into three sizes, the standard has a list of the size of the path.
But for the need for regular pigging of the pipeline, no matter what medium to transport, you must use full diameter ball valve.
Ball valves used for conveying viscous, easily slagging medium piping shall be of all sizes, allowing regular blow through of wax scraper. Used to transport gas or physical properties similar to the water medium of the pipeline should be used to reduce the diameter of the ball valve, because its weight than the full diameter of the ball valve about 30%, is conducive to reducing pipeline load and reduce costs.
