概述；節(jié)流截止放空閥的詳細(xì)資料：產(chǎn)品引用標(biāo)準(zhǔn)：　　API?6D　　　　　管道閥門規(guī)范?　　GB12235?　　　　通用閥門法蘭連接鋼制截止和升降式止回閥?　　ANSI?B16.5a?　　管法蘭及法蘭管件?　　JB/T79.1-79.2?　整體鑄鋼管法蘭?　　GB/T13927?　　　通用閥門壓力試驗?　　JB/T9092　　　　閥門的檢驗與試驗?主要性能規(guī)范：壓力等級常溫下壓力試驗（MPa）適用溫度℃適用介質(zhì)密封上密封殼體氣體密封“G”型“D”型普通型抗硫型基本型公稱壓力PN（MPa）1.61.761.762.40.6-29～250-46～121-29～121含H 2 S和Co 2 >500Mg/m 3 的介質(zhì)石油、天然氣、水等2.52.752.753.750.64.04.44.46.00.66.47.047.049.60.610.011.011.015.00.616.017.617.624.00.6????????????????????主要零件的材料說明：零件名稱閥體、閥蓋閥瓣閥桿閥座閥桿螺母密封圈填料密封指基本名稱WCB合金鋼（特殊處理）不銹鋼合金鋼（特殊處理）鋁青銅填充聚四氟乙烯填充聚四氟乙烯膨脹石墨耐油密封脂抗硫型抗硫不銹鋼抗硫密封脂?主要外形尺寸：?公稱壓力PN（MPa）尺寸（mm）DN（mm）254050801001502002501.6L216230230310350480600730H243265346409484521594621H186108115146163202292355D0180250250300300350350400重量（Kg）1724275260125165285?2.5L216230230310350480600730H243265346409433521594621H186108115146163202292355D0180250250300300350350400重量（Kg）1724275566140180310?4.0L216230230310350480600730H243265346409433521594621H186108115146163202292355D0180250250300300350350400重量（Kg）2029326780168215372?6.4L216230230310350480600730H243265346409433521594621H186108115146163202292355D0180250250300300350350400重量（Kg）2029326780168215372?10.0L23020300380430559660787H245265287409433531709817H178106110152169225321399D0200250300350250400500500重量（Kg）29425595120240310530?16.0L230260300390450???H215265237414440???H178105110155175???D0200250300350350???重量（Kg）355065116145?