Globe valve structure is simple, the valve stem can both rotate and lift the principle of the valve to open or cut off, and to ensure that the valve seal and sealing function. Due to the special kinematic principle of the structure, it also brings about extremely unfavorable consequences on the force acting on the seal on the valve (the necessary vertical pressure between the seal pairs and the relative slip between the seal pairs). Practice has proved that the valve on the seal often open and close only a few times, because of the seal between the scratch caused by leakage. Slight scratches need to be disassembled and repaired, and the serious bruise is scrapped due to damage. Such consequences not only increase the manufacturing cost of the enterprise but also affect the performance of the valve. To solve such problems on the valve seal structure and materials have been tested and improved. â‘ the valve stem on the seal to move to the valve flap (purpose is to force the process, the valve flap on the sealing surface relative to the valve cover on the sealing surface in a static non-slip state). Although this improvement can improve the life of the seal, but because of the valve cover to add a valve cover between the seal makes the structure more complex, lower cost. â‘¡ change the sealing material. In the stem seal conical surfacing anti-scratch good Stellite hard alloy, although this method has achieved good results, but because Stellite alloy costs are too high, on the other hand stem The basic material for the 13Cr martensitic stainless steel, poor weldability, pre-welding to be welded when welding, welding insulation and welding process complex. In addition, to ensure the dimensional accuracy of the stem, but also increase the roughing process. Comprehensive analysis, in addition to special requirements, the program is not good value for money. Practice has proved that to improve the stem cone surface hardness is to improve the life of the valve on the feasible way. More keyword search: Globe valve
Thermoplastic Hose
Thermoplastic Hose include R7 Hydraulic Hose and R8 hydraulic Hose,which consists of a thermoplastic inner tube ,one or two tensile textile braids for reinforcement and a hydraulic fluid and weather resistant thermoplastic cover.This rubber hose is widely used in non-conductive applications where there is potential of contacting with high voltage sources ,petroleum based and synthetic hydraulic fluids with temperature ranging from -40 °C to 212 °C.The hose pipe works in construction equipment, lubrication lines and hydraulic lift equipment, pressure gauge and valve, and water jetting so on.
Thermoplastic Hose,Smooth Cover Hose,Thermoplastic Hydraulic Hose,High Pressure Rubber Hose
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