What is the selection principle of the forged steel globe valve?
The selection principle is as follows: 1. Forged steel globe valves should be used on the pipeline or device of high temperature and high pressure medium. Such as thermal power plants, nuclear power plants, high-temperature, high-pressure pipelines of petrochemical systems. 2. On the pipeline where the flow resistance is not strict on the pipeline. That is, the place where the pressure loss is not considered. 3. Small valves can be used with needle valves, instrument valves, sampling valves, pressure gauge valves, etc. 4, there are flow adjustment or pressure regulation, but the adjustment accuracy is not high, and the pipeline diameter is relatively small, such as the nominal diameter of ≤ 50mm pipeline, should be used. 5. For small chemical fertilizers and large chemical fertilizers in synthetic industrial production, high-pressure angle forging steel shut-off valves or high-pressure angle throttle valves with nominal pressure PN160 nominal pressure 16MPa or PN320 nominal pressure 32MPa should be used. 6. In the desiliconization workshop and the easy coking pipeline in the production of alumina Bayer method, it is easy to select the DC forging valve or the DC throttle valve with the valve body separated, the valve seat can be removed, and the carbide seal pair. . 7. In the water supply and heating projects in urban construction, it is known to pass through smaller pipelines, and the cut-off, balance valve or plunger valve can be used, such as the pipeline passing the nominal less than 150mm.
The main advantages of forged steel globe valves
The most obvious advantages of the forged steel globe valve are: During the opening and closing process, the friction between the valve flap and the sealing surface of the valve body is smaller than that of the gate valve, so it is wear-resistant. The opening height is generally only 1/4 of the diameter of the seat channel and therefore much smaller than the gate valve. Usually there is only one sealing surface on the valve body and the valve flap, so the manufacturing process is better and easy to repair. Applicable temperature: -196°C～700°C Driving mode: manual, bevel gear transmission, pneumatic, electric, hydraulic, gas-liquid linkage, electro-hydraulic linkage valve body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8(304), CF3 (304L ), CF8M (316), CF3M (316L), Ti. Different materials can be used for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.
