對夾式止回閥 產品型號：H71(2)H/Y 產品引用標準： 設計與制造：API 594、API 6D 結構長度：ANSI 594、API 6D、DIN3202 法蘭標準：DIN 2543-2548、API605、ASME B 16.47 壓力檢驗：API 598 主要性能規范： 配管法蘭 公稱壓力 常規產品型號 JB/T 74 ~90、 GB/T 9112 ~9124、 HG 20592 ~20614 PN1.0MPa H71H-10C H71W-10P H71W-10P8 H71W-10P3 H71W-10R H71W-10R8 H71W-10R3 PN1.6MPa H71W-16C H71W-16P H71W-16P8 H71W-16P3 H71W-16R H71W-16R8 H71W-16R3 PN2.5MPa H71W-25 H71W-25P H71W-25P8 H71W-25P3 H71W-25R H71W-25R8 H71W-25R3 PN4.0MPa H71W-40 H71W-40P H71W-40P8 H71W-40P3 H71W-40R H71W-40R8 H71W-40R3 PN6.3MPa H71W-63 H71W-63P H71W-63P8 H71W-63P3 H71W-63R H71W-63R8 H71W-63R3 PN10.0MPa H71W-100 H71W-100P H71W-100P8 H71W-100P3 H71W-100R H71W-100R8 H71W-100R3 PN16.0MPa H71W-160 H71W-160P H71W-160P8 H71W-160P3 H71W-160R H71W-160R8 H71W-160R3 GB/T 9112 ~9124、 HG 20615 ~20635、 SH 3406 PN2.0MPa H71H-20C — H71W-20P8 H71W-20P3 — H71W-20R8 H71W-20R3 PN5.0MPa H71H-50 — H71W-50P8 H71W-50P3 — H71W-50R8 H71W-50R3 PN11.0MPa H71H-110 — H71W-110P8 H71W-110P3 — H71W-110R8 H71W-110R3 PN15.0MPa H71H-150 — H71W-150P8 H71W-150P3 — H71W-150R8 H71W-150R3 ANSI B 16.5 Class150 H71H-A1C — H71W-A1P8 H71W-A1P3 — H71W-A1R8 H71W-A1R3 Class300 H71H-A3 — H71W-A3P8 H71W-A3P3 — H71W-A3R8 H71W-A3R3 Class600 H71H-A6 — H71W-A6P8 H71W-A6P3 — H71W-A6R8 H71W-A6R3 Class900 H71H-A9 — H71W-A9P8 H71W-A9P3 — H71W-A9R8 H71W-A9R3 主　要 零　件 材　料 閥體 WCB(A105) ZG1Cr18Ni9Ti CF8(304) CF3(304L) ZG1Cr18Ni12Mo2Ti CF8M(316) CF3M(316L) 閥瓣 2Cr13 1Cr18Ni9Ti 0Cr18Ni9 00Cr19Ni10 1Cr18Ni12Mo2Ti 0Cr17Ni12Mo2 00Cr17Ni14Mo2 壓圈 2Cr13 1Cr18Ni9Ti 0Cr18Ni9 00Cr19Ni10 1Cr18Ni12Mo2Ti 0Cr17Ni12Mo2 00Cr17Ni14Mo2 彈簧 0Cr18Ni9 0Cr18Ni9 0Cr18Ni9 00Cr19Ni10 0Cr17Ni12Mo2 0Cr17Ni12Mo2 00Cr17Ni14Mo2 適　用 工　況 適用介質 水、蒸汽、油品等 硝酸等腐蝕性介質 強氧化性介質 醋酸等腐蝕性介質 尿素等腐蝕性介質 適用溫度(℃) -29~425 -196~540 -196~425 -196~540 -196~455 　　注：本表為常規對夾式止回閥的型號編制、主要