Vali ya kuzuia kurudi kwa ukubwa mkubwa ya Kiwango cha Marekani
Bidhaa Nyingine
I. Muhtasari wa Valvu ya Kuzuia ya Ukubwa Mkubwa wa Kiwango cha Marekani:
① Ubunifu na utengenezaji wa bidhaa hii unakidhi viwango vya Taifa la Marekani ANSI B16.34, na viwango vya Chama cha Mafuta cha Marekani API 16D.
② Sehemu ya kufungua na kufunga ya valvu ni aina ya swing, njia ya mtiririko ni ya moja kwa moja, na inaweza kusanikishwa kwenye mabomba ya mlalo na wima.
③ Pini ya lever ya swing inatumia muundo wa ndani, ambayo inapunguza uwezekano wa kuvuja nje.
④ Kifuniko cha valvu na mwili wa valvu vimeunganishwa kwa bolt. Katika hali ya shinikizo la juu, kiwango kinazidi Daraja la 600 Lb. Kifuniko cha kati cha flange kinatumia muundo wa kuziba wa ndani wa shinikizo, ambayo inafanya bidhaa iwe na uzito mdogo, na kuziba kunategemewa. Viwango (kuzuia moto, kuzuia umeme wa tuli)
II. Kiwango cha Valvu ya Kuzuia ya Ukubwa Mkubwa wa Kiwango cha Marekani STD (kuzuia moto, kuzuia umeme wa tuli)
Aina | Ubunifu na Utengenezaji | Urefu wa Muundo | Ukubwa wa Flange | Shinikizo-Joto | Majaribio-Uchunguzi |
Valvu ya kuzuia ya swing | API 16D | ASME B16.10 | ASME B16.5 | ASME B16.34 | API 598 |
III. Majaribio ya Shinikizo la Valvu ya Kuzuia ya Ukubwa Mkubwa wa Kiwango cha Marekani
Shinikizo la kawaida | Majaribio ya nguvu | Majaribio ya kuziba kwa maji | Majaribio ya kuziba kwa hewa | |||
MPa | Lbf/in² | MPa | Lbf/in² | MPa | Lbf/in² | |
150 | 3.1 | 450 | 2.2 | 315 | 0.5-0.7 | 60-100 |
300 | 7.8 | 1125 | 5.6 | 815 | ||
600 | 15.3 | 2225 | 11.2 | 1630 | ||
900 | 23.1 | 3350 | 16.8 | 2440 | ||
1500 | 38.4 | 5575 | 28.1 | 4080 | ||
2500 | 64.6 | 9367 | 47.4 | 6873 | ||
IV. Nyenzo za Sehemu Kuu za Valvu ya Kuzuia ya Ukubwa Mkubwa wa Kiwango cha Marekani
Kipochi | ASTM A216 WCB | ASTM A351 CF8 | |||
Sehemu ya kufungua na kufunga na msaada | WCB | CF8 | CF8M | Monel | |
Pini | F6a | F304 | F316 | Monel | F304 |
Sehemu ya uso wa sehemu ya kufungua na kufunga | 13Cr 13Cr STL | 304 STL | 316 STL | Monel | 304 304 STL |
Sehemu ya uso wa kiti cha valvu | 13Cr STL STL | 304 STL | 316 STL | Monel | 304 304 STL |
Kipochi | ASTM A351 CF3 ASTM A351 CF8M ASTM A351 CF3M | ||||
Sehemu ya kufungua na kufunga na msaada | |||||
Pini | F304L F316L F316L | ||||
Sehemu ya uso wa sehemu ya kufungua na kufunga | 304L 304L STL | 316 316 STL | 316L 316L STL | ||
Sehemu ya uso wa kiti cha valvu | 304L STL STL | 316 STL STL | 316L STL STL | ||
Ukubwa | Daraja la 150 (PN20) | Daraja la 300 (PN50) | |||||||||
DN | NPS | L | d | H | L | d | H | ||||
RF | RTJ | BW | RF | RTJ | BW | ||||||
50 | 2 | 203 | 216 | 203 | 51 | 132 | 267 | 283 | 267 | 51 | 144 |
65 | 2 1/2 | 216 | 229 | 216 | 64 | 147 | 292 | 308 | 292 | 64 | 169 |
80 | 3 | 241 | 254 | 241 | 76 | 176 | 318 | 333 | 318 | 76 | 210 |
100 | 4 | 292 | 305 | 292 | 102 | 198 | 356 | 371 | 356 | 102 | 260 |
125 | 5 | 330 | 343 | 330 | 127 | 255 | 400 | 416 | 400 | 127 | 295 |
150 | 6 | 356 | 368 | 356 | 152 | 320 | 445 | 460 | 445 | 152 | 326 |
200 | 8 | 495 | 508 | 495 | 203 | 380 | 533 | 549 | 533 | 203 | 380 |
250 | 10 | 622 | 635 | 622 | 254 | 440 | 622 | 638 | 622 | 254 | 440 |
300 | 12 | 699 | 711 | 699 | 305 | 480 | 711 | 727 | 711 | 305 | 520 |
350 | 14 | 787 | 800 | 787 | 337 | 530 | 838 | 854 | 838 | 337 | 540 |
400 | 16 | 864 | 876 | 864 | 387 | 580 | 864 | 879 | 864 | 387 | 588 |
450 | 18 | 978 | 991 | 978 | 438 | 618 | 978 | 994 | 978 | 438 | 670 |
500 | 20 | 978 | 991 | 978 | 489 | 657 | 1016 | 1035 | 1016 | 489 | 720 |
Daraja la 600 (PN110) | Daraja la 900 (PN150) | ||||||||||
50 | 2 | 292 | 295 | 292 | 51 | 170 | 368 | 371 | 368 | 51 | 200 |
65 | 2 1/2 | 330 | 333 | 330 | 64 | 178 | 419 | 422 | 419 | 64 | 220 |
80 | 3 | 356 | 359 | 356 | 76 | 246 | 381 | 384 | 381 | 76 | 280 |
100 | 4 | 432 | 435 | 432 | 102 | 290 | 457 | 460 | 457 | 102 | 320 |
125 | 5 | 508 | 511 | 508 | 127 | 320 | 559 | 562 | 559 | 127 | 360 |
150 | 6 | 559 | 562 | 559 | 152 | 360 | 610 | 613 | 610 | 152 | 400 |
200 | 8 | 660 | 664 | 660 | 203 | 430 | 737 | 740 | 737 | 203 | 480 |
250 | 10 | 787 | 791 | 787 | 254 | 502 | 838 | 841 | 838 | 254 | 560 |
300 | 12 | 838 | 841 | 838 | 305 | 554 | 965 | 968 | 965 | 305 | 632 |
Daraja la 1500 (PN260) | Daraja la 2500 (PN420) | ||||||||||
50 | 2 | 368 | 371 | 368 | 51 | 210 | 451 | 454 | 451 | 42 | 230 |
65 | 2 1/2 | 419 | 422 | 419 | 64 | 240 | 508 | 514 | 508 | 52 | 260 |
80 | 3 | 470 | 473 | 470 | 76 | 303 | 578 | 584 | 578 | 62 | 330 |
100 | 4 | 546 | 549 | 546 | 102 | 340 | 673 | 683 | 673 | 87 | 370 |
125 | 5 | 673 | 676 | 673 | 127 | 380 | 794 | 807 | 794 | 96 | 410 |
150 | 6 | 705 | 711 | 705 | 144 | 430 | 914 | 927 | 914 | 131 | 460 |
200 | 8 | 832 | 841 | 832 | 192 | 500 | 1022 | 1038 | 1022 | 179 | 530 |
250 | 10 | 991 | 1000 | 991 | 239 | 590 | 1270 | 1292 | 1270 | 223 | 620 |
| Jamii ya Sekta: | Machinery & Equipment/Valves/Check Valves |
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