Underground pipe network gas burner valve requirements:

Gas gas burner valve installed in the underground pipe network should be able to withstand the maximum pressure within the gas transmission and distribution pipelines, more importantly, must have sufficient rigidity to withstand the underground pipe network that is subject to a variety of external forces can maintain the gas burner Burner Valve does not deform reliably ensure the sealing performance of the gas burner valve. 1) to minimize the height of the gas burner valve structure (refer to section centerline of the flow gas burner valve to the height of the top of the gas burner valve), to reduce the pipe depth. 2) at the top of the gas burner valve should be fitted with fully enclosed hoist indicator, easy to check the status of the gas burner valve which is an important condition for safe operation. 3) Full bore design, reduce flow resistance, easy cleaning through a pipe or duct detectors, but also to meet constantly lose enclosed tapping machine openings in the pipeline. 4) reliable sealing performance, soft seal gas burner valve 111 times the nominal rated working pressure is not allowed inside any noticeable leak, hard seal gas Burner Valves 111 times the nominal rated leakage within the allowable operating pressure of less than 13DNmm3 / s. This requirement is more stringent, such as: 500mm nominal inside diameter gas gas burner valve leakage amount can not exceed 9ml / min, external leakage is absolutely not allowed. 5) used in the gas gas burner valve casing underground pipe network should be corrosion resistant, suggested a different shell material according to the medium and the use of pressure pipelines. 6) The design of the gas burner valve components should be considered low-maintenance or maintenance-free construction, repair and maintenance to minimize the workload, reducing gas burner valve repair and maintenance due to the impact of traffic and closed roads. 7) the vast majority of artificial underground pipeline gas burner valves open and close, open and close the Stove Top Burner Valve torque requirement is small, the number of full circles reasonable, after the accident as soon as possible to cut off the gas supply. 8) our urban roads under various pipelines crowded, complex, not excavated basement cellar well, it is recommended Buried gas burner valves.