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| | SMOLENSKY CHECK VALVE (Flange Type) |
| SFS-71 | SFS-72 | SFS-73 |
| WORKING PRESSURE | Max. 10kg/cm² | Max. 20kg/cm² | Max. 10kg/cm² |
| APPLICABLE TEMPERATURE | Max. 80℃ (Option : Max. 120℃) |
| APPLICABLE FLUID | Water, Oil (Acid-Total Option) |
| MIN. OPERATING PRESSURE | 0.05 ~ 0.1kg/cm² |
| CONNECTION METHOD | KS 10K FF Flange | KS 20K RF Flange | KS 10K RF Flange |
| HYDRAULIC TEST | BODY | 20kg/cm² - 2min | 40kg/cm² - 2min | 20kg/cm² - 2min |
| SEAT RING | 15kg/cm² - 1min | 30kg/cm² - 1min | 15kg/cm² - 1min |
| METERIALS | BODY | GC 200 | SCPH 2 | SSC 13 |
| SEAT RING | YBsC 3 & BC 6 | SSC 13 |
| DISC RUBBER | N.B.R (Option : E.P.D.M) |
| HINGE STEM | C 3604 BD | C 3604 BE& STS 304 | STS 304 |
| SPRING | STS 304 WPB |
| MODEL | SFS-71 (CAST IRON 10K) | SFS-71 (CAST STEEL 10K) | SFS-73 (CAST STAINLESS STEEL 10K) |
| SIZE | L | H | D | L | H | D | L | H | D |
| 40 | 162 | 121 | 140 | 150 | 111.5 | 140 | 142 | 111.5 | 140 |
| 50 | 183 | 133 | 155 | 175 | 117 | 155 | 168 | 117 | 155 |
| 65 | 200 | 135 | 175 | 180 | 126 | 175 | 178 | 121 | 175 |
| 80 | 210 | 147 | 185 | 195 | 129 | 200 | 188 | 130 | 185 |
| 100 | 217 | 169 | 210 | 200 | 154 | 225 | 188 | 154 | 210 |
| 125 | 255 | 192 | 250 | 252 | 181.5 | 270 | 245 | 181.5 | 250 |
| 150 | 280 | 209.5 | 280 | 280 | 184 | 305 | 272 | 182.5 | 280 |
| 200 | 416 | 242 | 330 | 358 | 219 | 350 | 352 | 220 | 330 |
| 250 | 400 | BY-PASSPIPING | 400 | 405 | BY-PASS PIPING | 430 | 387 | BY-PASS PIPING | 400 |
| 300 | 460 | 445 | 459 | 480 | | | |
| 350 | 560 | 490 | 566 | 540 | | | |
| 400 | 670 | 560 | 685 | 605 | | | |
| 450 | 805 | 620 | 800 | 675 | | | |
| 500 | 875 | 675 | 890 | 730 | | | |
| 550 | 985 | 745 | | | | | | |
| MODEL | STD-72 |
| SIZE | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 |
| L | 235 | 265 | 296 | 370 | 410 | 445 | 553 | 647 | 808 | 854 | 1063 |
| L1 | 135 | 170 | 176 | 226 | 230 | 345 | 390 | 405 | 540 | 590 | 735 |
| H | 300 | 315 | 345 | 410 | 458 | 510 | 640 | 730 | 900 | 1010 | 1260 |
| B | 253 | 258 | 283 | 320 | 375 | 415 | 535 | 620 | 738 | 835 | 1040 |
| NO | DESCRIPTION |
| 1 | BODY |
| 2 | DISC RUBBER |
| 3 | SEAT RING |
| 4 | DISC HOLDER |
| 5 | D ISC WASHER |
| 6 | HINGE STEM |
| 7 | BUFFER |
| 8 | UPPER GUIDE |
| 9 | DISC LOCK NUT |
| 10 | SPRING |
| 11 | O-RING |
| 12 | BY-PASS PIPING |
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