The Use And Maintenance Of Brass Ball Valve:
The brass ball valve is mainly used to cut off or connect the medium in the pipeline, and can also be used for the regulation and control of the fluid. The brass ball valve has small flow resistance, simple structure, small volume, light weight, good sealing performance, convenient operation, rapid opening and closing, and is convenient for long-distance control. It is most suitable for switching and shut-off valves.
Material of ball valve:
Metal material ball valve:
Such as carbon steel ball valve, alloy steel ball valve, stainless steel ball valve, cast iron ball valve, titanium alloy ball valve, copper alloy ball valve, aluminum alloy ball valve, etc.
Metal Body Lined Ball Valves:
Such as rubber-lined ball valves, fluorine-lined ball valves, lead-lined ball valves, plastic-lined ball valves, and enamel-lined ball valves.
Non-metallic ball valve:
Such as ceramic ball valve, glass ball valve, plastic ball valve.
Operation of the ball valve:
Before operation, it is necessary to confirm that the pipeline and valve have been flushed; the operation of the valve drives the rotation of the valve stem according to the size of the input signal of the actuator: when the forward rotation is 1/4 turn, the valve is closed. When the reverse rotation is 1/4 turn, the valve is open; when the direction indicating arrow of the actuator is parallel to the pipeline, the ball valve is open; when the indicating arrow is perpendicular to the pipeline, the ball valve is closed.
Maintenance precautions for copper ball valve:
When the ball valve is closed, there is still pressurized fluid inside the valve body. Before maintenance, release the pipeline pressure and keep the ball valve in the open position, disconnect the power supply or gas source, and disengage the actuator from the bracket; it is necessary to first check that the pressure of the upstream and downstream pipelines of the ball valve has been relieved, and then the disassembly and decomposition operation can be carried out; And during reassembly, care must be taken to prevent damage to the sealing surfaces of parts, especially non-metallic parts, special tools should be used when taking out the O-ring; the bolts on the flange must be tightened symmetrically, gradually and evenly during assembly; the cleaning agent should be mixed with the ball valve. Rubber parts, plastic parts, metal parts and working medium are all compatible. When the working medium is gas, gasoline can be used to clean metal parts. The non-metal parts are cleaned with pure water or alcohol; the decomposed single parts can be cleaned by dipping, and the metal parts with non-decomposed non-metal parts can be scrubbed with a clean and fine silk cloth impregnated with cleaning agent . When cleaning, all grease, dirt, glue, dust, etc. adhering to the wall must be removed; non-metallic parts should be removed from the cleaning agent immediately after cleaning, and should not be soaked for a long time; Assemble, but do not leave it for a long time, otherwise it will rust and be polluted by dust; new parts should also be cleaned before assembly; use grease for lubrication, and the grease should be consistent with the metal materials, rubber parts, plastic parts and working medium of the ball valve. compatible. When the working medium is gas, for example, special 221 grease can be used. Apply a thin layer of grease on the surface of the seal installation groove, a thin layer of grease on the rubber seal, and a thin layer of grease on the sealing surface and friction surface of the valve stem; no metal should be allowed during assembly Debris, fibers, grease, dust and other impurities, foreign matter, etc. contaminate, adhere or stay on the surface of the part or enter the cavity.
