Abstract: A valve includes a valve body having a groove and a fluid guiding element, wherein the fluid guiding element defines at least three channels and a cavity for receiving the valve body therewithin, so as to enable the communication among the channels to be adjusted by rotating the valve body.

Abstract: A valve includes a valve body having a groove and a fluid guiding element, wherein the fluid guiding element defines at least three channels and a cavity for receiving the valve body therewithin, so as to enable the communication among the channels to be adjusted by rotating the valve body.

Abstract: A lockable valve, includes: a tube body, wherein the tube body further comprises at least two opening ends and a valve end, wherein the valve end is positioned between the at least two opening ends; a rotating valve, wherein the rotating valve is disposed in the tube body for controlling a fluid flowing through the at least two opening ends of the tube body; and a locking arrangement, wherein the locking arrangement is arranged on the rotating valve to limit rotation of the rotating valve between a stopping state and a moving state, wherein when the rotating valve is in the stopping state, the rotating valve is blocked to be moved, wherein when the rotating valve is in the rotating state, the rotating valve is unlocked to be moved to adjust the flowing condition of the fluid in the tube body.

Abstract: A ball valve for refrigerating system includes a valve body, a valve seat that fits into the valve body by a screw thread, a valve ball accommodated within the valve body, two plastic sealing elements on both sides of the valve ball, a valve rod connected to the valve ball, and a valve cap on said valve rod. One of the two sealing elements is a first sealing element which is provided with a suitable spring assembly on its periphery. The spring assembly includes at least two springs with ladder-shaped longitudinal sections that are reverse-superimposed. The inside of first sealing element fits well with the surface of said valve ball, while its outside functions as a supporting surface and an acting surface for said spring assembly. The resulting configuration provides a ball valve with a desirable sealing effect.

Abstract: The invention provides a ball valve for refrigerating system. Conventional ball valves have plastic sealing gaskets on both sides of the valve ball, but they suffer from compression creep of the plastic sealing gaskets and great permanent compression deformation under high temperature and pressure, thus fail to reach desired sealing effect. The invention comprises a valve body, a valve seat that suits to said valve body by screw thread, a valve ball accommodated within said valve body, two plastic sealing elements on both sides of said valve ball, a valve rod connected to said valve ball, and a valve cap on said valve rod, wherein at lease one of said plastic sealing elements is abnormity sealing element on which suitable spring assembly is configured. The spring assembly consists of at least two springs with ladder-shaped longitudinal section that are reverse-superimposed.