Refrigerator Strip PVC Curtain Refrigerator Strip Pvc Curtain,Freezer Strip Door Curtain,Strip Curtains For Freezers,Cold Room Pvc Curtain LONG TERM ELEC. CO., LTD , https://www.longterm-hvac.com
Floating ball valve and fixed ball valve difference
Floating ball Valve ball is floating, under medium pressure, the ball can produce a certain displacement and squeeze the seal on the outlet end, to ensure that the outlet end of the seal, is a single-sided mandatory seal. Fixed ball valve ball is fixed, does not produce any movement after compression, therefore, in the design of the two seals should have sufficient preload to ensure that the seal is a double-sided forced seal. Usually with the ball in one of the upper and lower stem mounted with thrust or sliding bearings. Floating ball valve design should focus on whether the seal material can withstand the sphere of media load. Because the ball to withstand the load of the working medium all passed to the export seal, therefore, this floating ball structure is widely used in low pressure ball valve. In addition, the design should also consider the large-diameter ball valve operation requires a larger torque.