American standard flange gate valve
I. Introduction:
American standard flanged gate valves are widely used in petroleum chemical industry, thermal power plants and other oil product and steam pipelines as opening and closing devices for connecting or cutting off media in pipelines.
① Product design and manufacturing comply with American National Standard ANSI B16.34, American Petroleum Institute standards API 6D and API 600.
② Compact structure, small volume, good rigidity, safe and reliable sealing.
③ The closing member adopts an elastic structure, which can automatically compensate for the deformation of the valve body caused by abnormal load or temperature during operation. Therefore, the sealing is reliable, and no gate wedge will occur.
④ For manual valves with nominal diameter ≥ NPS 10, pressure class 400, and nominal diameter ≥ NPS 6, pressure class 150~2500, their operating devices are equipped with rolling bearings, making opening and closing easy.
⑤ The materials of the main body, internal parts, packing, gaskets and fasteners can be reasonably combined according to user requirements or actual working conditions.
⑥ The valve seat can be a replaceable seat, which can be arbitrarily matched with the material of the closing sealing surface to meet the working condition requirements and extend the service life.
II. Standards for American Standard Flanged Gate Valves:
Design and Manufacturing | Structural Length | Flange Dimensions | Butt Welding Connection Dimensions | Pressure-Temperature Class | Test and Inspection |
API 600 | ANSI B16.10 | ANSI B16.5a | ANSI B16.25 | ANSI B16.34 | API 598 |
III. Pressure Test for American Standard Flanged Gate Valves:
Nominal Pressure | Strength Test | Water Sealing Test | Gas Sealing Test | |||
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. Materials and Properties of Main Parts of American Standard Flanged Gate Valves:
Valve Body | ASTM A216 WCB | ASTM A351 CF8 | |||||||||
Gate Disc | WCB | CF8 | CF8M | Monel | |||||||
Stem | F6a | F304 | F316 | Monel | F304 | ||||||
Gate Disc Sealing Surface | 13Cr | 13Cr | STL | 304 | STL | 316 | STL | Monel | 304 | 304 | STL |
Valve Seat Sealing Surface | 13Cr | STL | STL | 304 | STL | 316 | STL | Monel | 304 | STL | STL |
Valve Body | ASTM A351 CF3 | ASTM A351 CF8M | ASTM A351 CF8 | ||||||||
Gate Disc | |||||||||||
Stem | F304L | F316 | F316L | ||||||||
Gate Disc Sealing Surface | 304L | 304L | STL | 316 | 316 | STL | 316L | 316L | STL | ||
Valve Seat Sealing Surface | 304L | STL | STL | 316 | STL | STL | 316L | STL | STL | ||
V. Main Dimensions of American Standard Flanged Gate Valves (ANSI Class 150~ANSI Class 300):
ANSI Class 150 | |||||||||||||||||||||
NPS | 2 | 2 1/2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 26 | 28 | 30 | 32 | 36 | 40 | 42 | |
L | RF | 178 | 191 | 203 | 292 | 267 | 292 | 330 | 356 | 381 | 406 | 432 | 457 | 508 | 559 | 610 | 610 | 660 | 711 | 762 | 787 |
BW | 216 | 241 | 283 | 305 | 403 | 419 | 457 | 502 | 572 | 610 | 660 | 711 | 813 | 864 | 914 | 914 | 965 | 1016 | 1067 | 1118 | |
Manual | H1 | 400 | 490 | 510 | 585 | 775 | 955 | 1160 | 1375 | 1570 | 1765 | 1980 | - | - | - | - | - | - | - | - | - |
Do | 200 | 200 | 250 | 300 | 350 | 350 | 400 | 450 | 500 | 600 | 700 | - | - | - | - | - | - | - | - | - | |
Bevel Gear | H2 | - | - | - | - | - | - | - | - | 1668 | 1920 | 2115 | 2215 | 2600 | 2908 | 3046 | 3136 | 3293 | 3726 | 4060 | 4229 |
Electric | H3 | - | - | - | - | - | - | - | - | 1668 | 1920 | 2115 | 2215 | 2600 | 2908 | 3046 | 3136 | 3293 | 3726 | 4060 | 4229 |
ANSI Class 300 | |||||||||||||||||||||
NPS | 2 | 2 1/2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 26 | 28 | 30 | 32 | 36 | 40 | 42 | |
L | RF | 216 | 241 | 283 | 305 | 406 | 419 | 457 | 502 | 762 | 838 | 914 | 991 | 1143 | 1245 | 1346 | 1697 | 1524 | 1727 | - | - |
BW | 216 | 241 | 283 | 305 | 406 | 419 | 457 | 502 | 762 | 838 | 914 | 991 | 1143 | 1245 | 1346 | 1697 | 1524 | 1727 | - | - | |
Manual | H1 | 470 | 525 | 535 | 635 | 805 | 1025 | 1230 | 1460 | 1645 | - | 1840 | - | - | - | - | - | - | - | - | - |
Do | 200 | 200 | 300 | 300 | 350 | 400 | 450 | 500 | 600 | - | 600 | - | - | - | - | - | - | - | - | - | |
Bevel Gear | H2 | - | - | - | - | - | - | - | - | - | - | 1935 | 2155 | 2572 | 2908 | 3100 | 3135 | 3293 | - | - | - |
Electric | H3 | - | - | - | - | - | - | - | - | - | - | 1935 | 2155 | 2572 | 2908 | 3100 | 3135 | 3293 | 3754 | 4120 | 4530 |
VI. Main Dimensions of American Standard Flanged Gate Valves (ANSI Class 600):
ANSI Class 600 | |||||||||||||||||
NPS | 2 | 2 1/2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 | 26 | 28 | 30 | |
L | RF | 292 | 330 | 356 | 432 | 559 | 660 | 787 | 838 | 889 | 990 | 1092 | 1194 | 1397 | 1448 | 1549 | 1651 |
BW | 292 | 330 | 356 | 432 | 559 | 660 | 787 | 838 | 889 | 990 | 1092 | 1194 | 1397 | 1448 | 1549 | 1651 | |
Manual | H1 | 474 | 530 | 547 | 703 | 913 | 1077 | 1276 | 1499 | - | - | - | - | - | - | - | - |
Do | 250 | 250 | 300 | 350 | 450 | 500 | 600 | 680 | - | - | - | - | - | - | - | - | |
Bevel Gear | H2 | - | - | - | - | - | - | - | 1470 | 1625 | 2089 | 2211 | 2616 | 2921 | 2960 | 3050 | 3112 |
Electric | H3 | - | - | - | - | - | - | - | 1470 | 1625 | 2089 | 2211 | 2616 | 2921 | 2960 | 3050 | 3112 |
| Machinery & Equipment/Valves/Gate Valves | |