SFA48Y適用于工作溫度C型≤425℃；I型≤500℃；V型≤500℃；的蒸汽等介質設備或管路上，作為超壓保護裝置。連接法蘭標準按JB/T……94系列1、系列2。 (電站用)主要零部件材料 NO. | 零件名稱 | C型材料 | I型材料 | V型材料 | 1 | 閥體 | WCB | ZG1Cr5Mo | ZG15Cr1Mo1V | 2 | 閥座 | 2Cr13 | 1Cr18Ni9Ti | 12Cr1MoVA | 3 | 調節圈 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 4 | 閥瓣 | 2Cr13 | 17-4PH | 17-7PH | 5 | 導向套 | 2Cr13 | 1Cr18Ni9Ti | 1Cr18Ni9Ti | 6 | 散熱器 | ZG230-450 | ZG230-450 | ZG230-450 | 7 | 閥蓋 | ZG230-450 | ZG230-450 | ZG230-450 | 8 | 彈簧 | 50CrVA | 50CrVA | 50CrVA |
(電站用)外形尺寸和連接尺寸 型號 | 公稱
通徑 | do | D | K | g | g1 | b | f | f1 | Z-?d | DN | D1 | K1 | g3 | g2 | b1 | f | f1 | z1-?d1 | L | L1 | ≈H | SFA48Y-16C
SFA48Y-16I
SFA48Y-16V | 40 | 25 | 150 | 110 |
| 85 | 18 | 3 |
| 4-18 | 50 | 165 | 125 |
| 100 | 20 | 3 |
| 4-18 | 120 | 115 | 540 | 50 | 32 | 165 | 125 |
| 100 | 20 | 3 |
| 4-18 | 65 | 185 | 145 |
| 120 | 20 | 3 |
| 4-18 | 135 | 120 | 618 | 65 | 40 | 185 | 145 |
| 120 | 20 | 3 |
| 4-18 | 80 | 200 | 160 |
| 135 | 20 | 3 |
| 8-18 | 160 | 140 | 710 | 80 | 50 | 200 | 160 |
| 135 | 20 | 3 |
| 8-18 | 100 | 220 | 180 |
| 155 | 22 | 3 |
| 8-18 | 160 | 150 | 730 | 100 | 65 | 220 | 180 |
| 155 | 20 | 3 |
| 8-18 | 150 | 285 | 240 |
| 210 | 24 | 3 |
| 8-23 | 225 | 175 | 892 | 150 | 100 | 285 | 240 |
| 210 | 24 | 3 |
| 8-23 | 200 | 340 | 295 |
| 265 | 26 | 3 |
| 12-23 | 240 | 235 | 1135 | 200 | 125 | 340 | 295 |
| 265 | 26 | 3 |
| 12-23 | 250 | 405 | 355 |
| 320 | 30 | 3 |
| 12-26 | 290 | 210 | 1135 | SFA48Y-40
SFA48Y-40I
SFA48Y-40V | 25 | 16 | 115 | 85 | 58 | 65 | 16 | 2 | 4 | 4-14 | 32 | 140 | 100 |
| 78 | 18 | 2 |
| 4-18 | 110 | 95 | 429 | 32 | 20 | 140 | 100 | 66 | 78 | 18 | 2 | 4 | 4-18 | 40 | 150 | 110 |
| 85 | 18 | 3 |
| 4-18 | 115 | 100 | 421 |
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