Valve cone burning caused by bad valve cone seal leakage, overheating and burning will ultimately make the valve

Valve cone burning caused by bad valve cone seal leak, will ultimately make the valve overheating and burning. Causes more bad seal seat centerline offset, tilt or seat, the valve is deformed, so that the sealing cone is bad; valve tap coke or slag accumulation  Double ferrule fitting , the sealing cone indentation and gradually expand to form pits; accumulation of  Needle valve  and shedding forming a trench; carbide surfacing impact stress and thermal stress generated by joint action of the valve seat and cracks occur; valve clearance cold too small, so that the valve can not be seated;

The main way of transportation of natural gas, which has a full bore ball valves open and close rapidly, good sealing performance advantages

Pipeline transport is the main way oil, natural gas transportation, which has a full bore ball valves open and close rapidly, good sealing performance advantages can be buried in the ground, so that the valve member from erosion, with the pipeline with life, oil, ideal gas valve. To ensure the quality of welding pressure valve, we  Instrument valve manifolds  submerged arc welding equipment, high-pressure valve for this will be discussed during the submerged arc welding process. Pressure valve test weldment welding groove before welding submerged arc welding preparation must be done before the preparation work, beveling weldments, surface cleaning parts to be welded, cleaning the surface of the clamping and welding weldment , flux drying.  Double ferrule fitting  welding groove test weldment weldment cleanup is to remove the rust, oil and water, to prevent the generation of pores. Grinder mill and flames with baking parts to be welded. Before welding groove and groove on both sides should be in each port area and the parts to be welded 20mm surface rust, scale, oil and other clean up. Stepping the workpiece chuck, the other end on the driven wheel using the outer working surface for welding pieces of alignment of the workpiece in a horizontal working position.