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A28H型適用于工作溫度≤200℃的空氣、蒸汽、水、氮氫混合氣等介質(zhì)的設(shè)備或管路上，A28Y-P/10R8適用于工作溫度≤200℃有腐蝕性介質(zhì)的設(shè)備或管路上，作為超壓保護(hù)裝置。 A28H type are used for the equipment and pipeline of    the air， N2， H2 mixed gas vapour etc.medium what the working temp-erature are less than 200 . A28Y-P/10R8 type are used for the equipment    and pipeline of the quality with corrode medium what the working temperature are less than 200 . Take for extra pressure protedion devices. 主要零部件材料  Explanation of materials for main parts NO.Name of partA28H MaterialsA28Y-P MaterialsA28Y-R8            Materials 1    BodyHT200ZG1Cr18Ni9TiCF8M 2    Nozzle35ZG1Cr18Ni9TiCF8M 3      Adjusting ring2Cr131Cr18Ni9Ti316 4    Disc2Cr131Cr18Ni9Ti316 5    Spring50CrVA50CrVA  Coated Teflon50CrVA  Coated Teflon 6    Stem2Cr132Cr13316 7  Adjusting bolt452Cr13316 8      CapZG200-400ZG200-400CF8M 　Sealing surface of materialD507
Depositing D507Co
Depositing stellite 10  Adjusting nutQ235-A2Cr131Cr18Ni12Mo2Ti 　  Sealing surface of material"Y" Co  Depositing stellite， "H" D507 Depositing D507， "W"  body

外形尺寸和連接尺寸  Dimensions (mm) Nominal diameter
DN (mm)  Dimensions (mm) doRcGLL1H 15101/2"3/4"3762189 20123/4"1"4065196 25151"11/ " 
4    4572277 322011/ "  15585312 402511/ "  2"67100322 50322"21/ " 
2    76112348 654021/ "  3"  110135370 80503"4"  110145410