First, the American standard bevel gear valve characteristics
1, The product design and manufacture in line with the US national standard ANSI B16.34, the American Petroleum Institute standards API6D and API600 requirements.
2, Compact structure, small size, good rigidity, safe and reliable seal.
3, Closing pieces (gate) with flexible structure, in the work can automatically compensate for abnormal load or temperature caused by the deformation of the valve. Therefore, the seal is reliable and does not create gate wedges.
4, Diameter greater than or equal to NPS10 ", pressure level 150 pounds and diameter greater than or equal to NPS6", pressure level 600 ~ 2500 pounds of manual valves, the operating device is equipped with rolling bearings, opening and closing easily.
5, The main material, the inner parts of materials, packing, gaskets, fasteners, materials, according to user requirements or the actual working conditions and reasonable combination.
6, NPS ≤ 10 "gate valve, the valve seat for the exchange of female threaded valve seat can be any combination of material with the closing piece sealing surface material to meet the conditions required to extend the service life.
Second, American standard bevel gear valve standard STD
|
Design and manufacture |
Structure length |
Flange size |
Butt welding connection size |
Pressure - Temperature |
Test - test |
|
APl 600 |
ASME B16.10 |
ASME B16.5 |
ASTM B16.25 |
ASME B16.34 |
APl 598 |
Pressure test
|
Nominal pressure PN (Lb) |
Strength test |
Water seal test |
Gas seal test |
|||
|
MPa |
Lbf / in2 |
MPa |
Lbf / in2 |
MDa |
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 |
||
Third, the United States standard bevel gear valve parts materials
|
Case |
ASTM A216 WCB |
ASTM A351 CF8 |
|||
|
Gate |
WCB |
CF8 |
CF8M |
Monel |
|
|
Valve stem |
F6a |
F304 |
F316 |
Monel |
F304 |
|
Gate sealing surface |
13Cr 13Cr STL |
304 STL |
316 STL |
Monel |
304 304 STL |
|
Seat sealing surface |
13Cr STL STL |
304 STL |
316 STL |
Morel |
304 STL STL |
Fourth, American standard bevel gear valve main dimensions
| DN | 150Lb convex flange RF | ||||||||
| mm | in | L | D | D1 | D2 | b | Z-φd | H | D0 |
| 15 | 1/2 | 108 | 89 | 60.5 | 35 | 11.5 | 4-φ16 | 165 | 100 |
| 20 | 3/4 | 117 | 98 | 70 | 43 | 13 | 4-φ16 | 190 | 100 |
| 25 | 1 | 127 | 108 | 79.5 | 51 | 14.5 | 4-φ16 | 230 | 120 |
| 32 | 1 1/4 | 140 | 117 | 89 | 63.5 | 16 | 4-φ16 | 245 | 120 |
| 40 | 1 1/2 | 165 | 127 | 98.5 | 73 | 17.5 | 4-φ16 | 285 | 150 |
| 50 | 2 | 178 | 152 | 120.5 | 92 | 19.5 | 4-φ19 | 325 | 150 |
| 65 | 2 1/2 | 190 | 178 | 139.5 | 105 | 22.5 | 4-φ19 | 350 | 180 |
| 80 | 3 | 203 | 190 | 152.5 | 127 | 24 | 4-φ19 | 380 | 200 |
| 100 | 4 | 229 | 229 | 190.5 | 157 | 24 | 8-φ19 | 460 | 200 |
| 125 | 5 | 254 | 254 | 216 | 186 | 24 | 8-φ22 | 630 | 250 |
| 150 | 6 | 267 | 279 | 241.5 | 216 | 25.5 | 8-φ22 | 635 | 250 |
| 200 | 8 | 292 | 343 | 298.5 | 270 | 2 | 8-φ22 | 765 | 280 |
| 250 | 10 | 330 | 406 | 362 | 324 | 30.5 | 12-φ26 | 895 | 300 |
| 300 | 12 | 356 | 483 | 432 | 381 | 32 | 12-φ26 | 1080 | 350 |
| 350 | 14 | 381 | 533 | 476 | 413 | 35 | 12-φ29 | 1295 | 350 |
| 400 | 16 | 406 | 497 | 540 | 470 | 37 | 16-φ29 | 1435 | 400 |
| 450 | 18 | 432 | 635 | 578 | 533 | 40 | 16-φ32 | 1625 | 400 |
| 500 | 20 | 457 | 699 | 635 | 584 | 43 | 20-φ32 | 1830 | 450 |
| 600 | 24 | 508 | 813 | 749.5 | 692 | 48 | 20-φ35 | 2175 | 500 |
| 650 | 26 | 559 | 786 | 745 | 711 | 41.5 | 36-φ22 | 2235 | 550 |
| 700 | 28 | 610 | 837 | 795 | 762 | 44.5 | 40-φ22 | 2310 | 600 |
| 750 | 30 | 610 | 887 | 846 | 813 | 44.5 | 44-φ22 | 2695 | 600 |
| 800 | 32 | 660 | 941 | 900 | 864 | 46 | 48-φ22 | 3710 | - |
| 900 | 36 | 711 | 1057 | 1011 | 972 | 52.5 | 44-φ26 | 3925 | - |
| 1000 | 40 | 811 | 1175 | 1121 | 1080 | 56 | 44-φ29 | 4320 | - |
