Copper valve is a safety valve made of metal copper for water conservancy, gas, hydraulic, etc. The design of copper valve products is described from four aspects: mold making, product classification editing, selection principle editing and installation method editing.
Valve casting and forging
(1) Sand casting: the earliest production mode in the field Wholesale Plumbing Full Flow Durable Cw617n 1inch Female Ferrule Angle Seat Brass Ball Valve, because there is not enough pressure in the casting process, the valves produced by this process are prone to sand holes, resulting in a series of problems caused by product leakage.
(2) Hot forging: the forged valve body will have no trachoma and more beautiful appearance.
Product classification editing
Copper gate valve: gate valve refers to the valve whose closing piece (gate) moves in the vertical direction along the channel axis. It is mainly used to cut off the medium on the pipeline, that is, fully open or fully closed.
Copper ball valve: evolved from plug valve, its opening and closing part is a ball, which is used to rotate 90 ° around the axis of the valve rod to achieve the purpose of opening and closing.
Copper stop valve: refers to the valve whose closing part (disc) moves along the centerline of the valve seat. According to this movement form of the valve disc, the change of the valve seat port is in direct proportion to the valve disc travel.
Copper check valve: It is a valve that automatically opens and closes the valve disc depending on the flow of the medium itself, and is used to prevent the backflow of the medium.
Selection principle editing
According to the selection of control functions, all kinds of valves have their own functions. Pay attention to their corresponding functions when selecting.
According to the working conditions, the technical parameters of commonly used valves include the working pressure, the maximum allowable working pressure, the working temperature (minimum and maximum temperature) and the medium (corrosivity and flammability). When selecting, it should be noted that the above parameters of working conditions are consistent with the technical parameters of valves.
Select according to the installation structure. The installation structure of pipeline system includes pipe thread, flange, ferrule, welding, hose, etc. Therefore, the installation structure of the valve must be consistent with the installation structure of the pipeline, and the specifications and dimensions must be consistent.
Installation method editing
The valve connected by pipe thread is connected with the pipe thread at the pipe end. The internal thread can be either cylindrical pipe thread or conical pipe thread, while the external thread must be conical pipe thread.
The gate valve connected with internal thread is connected with the pipe end, and the length and size of external thread at the pipe end shall be controlled. In order to avoid excessive screwing of the pipe end to the inner end face of the pipe thread of the top pressure gate valve, causing the deformation of the valve seat and affecting the sealing performance.
Wholesale Plumbing Full Flow Durable Cw617n 1inch Female Ferrule Angle Seat Brass Ball Valve When installing and screwing the valve connected by pipe thread, the hexagonal or octagonal part at the same end of the thread shall be wrenched, and the hexagonal or octagonal part at the other end of the valve shall not be wrenched, so as to avoid the deformation of the valve.
The flange of the flanged valve and the flange of the pipe end are not only consistent with the specification and size, but also with the nominal pressure.
When the valve stem leakage is found during the installation and commissioning of the stop valve and gate valve, tighten the compression nut at the packing, and pay attention not to use too much force, subject to no water leakage.
Post time: Feb-27-2023