Flow Regulation Of Forged Steel Gate Valve
Oct 18, 2017
The general gate valve can not be used as a regulated flow. Gate valve can be applied to low temperature and low pressure can also be applied to high temperature and pressure, and according to the different materials of the valve for a variety of different media, but the gate valve is generally not used to transport mud and other particles in the pipeline.
The advantage of the gate valve is a small flow resistance, not the mouth of the flow resistance and short flow resistance similar to the short. The gate valve with orifice is mounted on the pipe and can be cleaned directly with the pig. As the gate is sliding on both seats, the plate gate valve can be applied to media with suspended particles, and the sealing surface of the plate gate is actually automatically positioned.
The sealing surface of the valve seat is not damaged by the thermal deformation of the valve body. And even if the valve is closed in a cold state, the thermal elongation of the valve stem does not overload the sealing surface. At the same time when the valve is closed, no guide hole of the gate valve does not require the gate of the closed position has a higher accuracy, so the electric flat valve can be used to control the opening and closing position. Due to the many advantages of the gate valve, so the use of a wide range. In the absence of damage to the valve and materials under the premise of the use of various characteristics of the material to identify.
The use of materials to identify the combustion properties of materials, commonly used metal materials are not burning. The rubber and plastic easy to burn, they are lining in the valve, seals, gaskets, fillers and so on. Chemical analysis method to analyze the content of various elements in the material, according to the material standards, look-up table to determine the material grade. The material is soaked in solvent and corrosive liquids, and the material is identified according to the degree of deformation and corrosion of the material. It can be distinguished according to the corrosion resistance of the different materials in the corrosion protection manual.