Due to the difference in upstream and downstream pressure, the flow of material through the valve is called pressure drop (△P) or differential pressure.
View details01 Why is the two-seat valve easy to oscillate when working with small opening?For a single core, when the medium is flow open, the valve stability is good; When the medium is flow closed type, the stability of the valve is poor. The double-seat valve has two spool, the lower spool is in the flo…
View detailsValve body blank heat treatment process according to different materials are as follows:1. Heat treatment of gray cast iron
View detailsCauses of ball valve internal leakage1. Reasons for internal leakage of the valve during the construction period:① Improper transportation and hoisting causes the overall damage of the valve, resulting in internal leakage of the valve;
View detailsSealing gasket is a sealing part often used in machinery, equipment, etc., is a sealing material, but also an indispensable part of machinery and equipment, so it is very important to know how to install sealing gasket. The correct installation can ensure the sealing performance of the machinery …
View detailsValve storage and maintenance1. The purpose of storage and maintenance is to prevent valve damage or reduce quality during storage. In fact, improper storage is one of the important reasons for valve damage.2. Valves should be kept in an orderly manner. Small valves should be placed on shelves, w…
View detailsWorking principle of self operated regulating valve:The operation of a self operated regulating valve is based on a basic principle: to use the energy of the process fluid to adjust the position of the valve. These valves integrate a self regulating mechanism that can respond to fluctuations in p…
View details