Ubungakanani obuqhelekileyo be-ANSI-Standard check valves

Ikhangela ivalveeyilwe, yenziwa, yaveliswa kwaye yavavanywa ngokwemigangatho yaseMelika ibizwa ngokuba ngumgangatho waseMelikakhangela ivalve, ngoko yintoni ubungakanani obuqhelekileyo bomgangatho waseMelikakhangela ivalve? Uthini umahluko phakathi kwayo kunye nevalve yokujonga umgangatho wesizwe? Okwangoku, ubungakanani obuqhelekileyo bomgangatho waseMelikakhangela iivalvuithandwa kakhulu ukuyilwa kwaye iveliswe ngokuhambelana nemigangatho ye-API kunye ne-ASME, kwaye imigangatho emininzi yevalvu yaseMelika ixhaphake ngokwenene emhlabeni. Imilinganiselo yomgangatho we-American Standard check valves yile ilandelayo: Imigangatho yoyilo: API 6D, ASME B16.34, API 594, BS 1868, GB/T 12235, GB/T 12236, JB/T 8937 Ubude besakhiwo: ASME B16.10 , API 6D, GB/T 12221 Imigangatho yoQhagamshelwano: ASME B16.5, ASME B16.47, ASME B16.25, GB/T 9113, JB/T 79, HG/ T 20592 Uvavanyo loxinzelelo: API 598, API 6D, GB/T 13927, GB/T 26480 Uxinzelelo kunye neqondo lobushushu : ASME B16.34, GB/T 12224 Ukusetyenziswa komgangatho waseMelika iivalvu zeglowubhu kwiindawo ezinoxinzelelo oluphezulu Owona mahluko uphambili phakathi komgangatho waseMelikakhangela iivalvukunye nomgangatho wesizwekhangela iivalvuzezi zilandelayo: 1. Iyunithi yedayamitha yegama yahlukile; 2. Uphawu lweflange lwahlukile; 3. Ubude besakhiwo buhluke; 4. Iimfuno zokuhlola zahlukile.