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Clamp type multi-level metal hard seal butterfly valve

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.

Key words:

Classification:

Cast steel valve series

Product Consulting:

Description


A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

◆ Product use

The butterfly valve is suitable for food, medicine, petrochemical, power plants, steel mills, industrial environmental protection water treatment and high-rise buildings, water supply and drainage pipelines, is an ideal device for regulating flow and cutting off fluid.

◆Product features

The butterfly valve system absorption, digestion of foreign technology, and combined with the views of domestic users and the experience accumulated in the production and carefully developed a new generation of products.
1, the use of three-dimensional eccentric structure, the valve body sealing ring using multi-level sealing ring structure, so that the butterfly plate with the valve body sealing surface uniform and reliable contact, can achieve gas seal without leakage.
2, unique structure, flexible operation, labor saving, convenient, long service life.
3. High temperature resistance, corrosion resistance and wear resistance of three-dimensional eccentricity.


◆ Executive standards

design and manufacture Flange connection Structure length TEST AND INSPECTION
GB/T 12238、JB/T8527 GB/T9113、JB/T79、HG20592 GB/T 12221 GB/T 13927
API 609 EN1092-1/2 、 ANSI/ASME B16.5/B16.47 the
JIS B2220
API 609、EN558 API 598

 

◆Main technical parameters

Nominal diameter DN(mm) 50~2000 50~500
Nominal pressure PN(MPa) 0.6 1.0 1.6 2.5 4.0
Test pressure Ps(MPa) Strength test 0.9 1.5 2.4 3.75 6.0
Sealing test 0.66 1.1 1.76 2.75 4.4
Gas seal test 0.6 0.6 0.6 0.6 0.6
leakage rate Zero leakage or <0.1 × DNmm ³/s (in line with GB/T13927 standard)
Applicable temperature Carbon steel: -29 ℃ ~ 425 ℃ Stainless steel: -40 ℃ ~ 600 ℃
Applicable media Air, water, steam, gas, oil and acid, alkali, salt with weak corrosive medium
Drive form Worm gear drive, pneumatic drive, electric drive, hydraulic drive

 

◆ Main parts materials

Part Name Materials
Valve body Cast steel, chromium molybdenum steel, alloy steel, dual phase steel
Butterfly plate Cast steel, chromium molybdenum steel, alloy steel, dual phase steel
Valve seat Stainless steel, hardfacing stellite and other hard alloys
Sealing ring Stainless steel and high temperature resistant asbestos board combined into multi-level
Stem 20Cr13, 1Cr13 stainless steel, chromium molybdenum steel, special materials
Shaft sleeve Austenitic stainless steel, 304 nitriding
Packing Flexible graphite, PTFE
Packing gland Cast steel, stainless steel
Bracket Cast steel, stainless steel

 

◆ Main outline connection dimension

DN L H D373H D673H D973H PN0.6MPa PN1.0MPa
mm Inches Short Long H1 A1 B1 H2 A2 B2 H3 A3 B3 D1 Z-Fd D1 Z-Fd
40 11/2 33 33 107 330 180 200 625 245 72 530 250 255 100 4-14 110 4-18
50 2 43 43 112 350 180 200 625 245 72 530 250 255 110 4-14 125 4-18
65 2 ¹/2 46 46 115 370 180 200 625 245 72 530 250 255 130 4-14 145 8-18
80 3 46 64 125 380 180 200 645 245 72 565 250 255 150 4-18 160 8-18
100 4 52 64 138 420 180 200 675 355 92 600 250 255 170 4-18 180 8-18
125 5 56 70 164 460 180 200 715 355 92 640 250 255 200 8-18 210 8-18
150 6 56 76 175 555 270 280 800 355 92 704 300 315 225 8-18 240 8-22
200 8 60 89 215 780 400 425 850 250 170 775 300 315 280 8-18 295 8-22
250 10 68 114 243 840 400 425 925 250 170 945 300 315 335 12-18 350 12-22
300 12 78 114 285 995 450 560 1035 450 220 1070 300 315 395 12-22 400 12-22
350 14 78 127 320 1050 450 560 1070 450 220 1140 300 315 445 12-22 460 16-22
400 16 102 140 350 1220 535 580 1190 450 220 1210 300 315 495 16-22 515 16-26
450 18 114 152 350 1280 535 580 1250 650 280 1335 575 714 550 16-22 565 20-26
500 20 127 152 380 1365 535 580 1290 650 280 1415 575 714 600 20-22 620 20-26
600 24 154 178 435 1460 570 660 1455 850 380 1605 656 810 705 20-26 725 20-30
700 28 165 229 480 1520 750 550 1585 850 380 1844 656 810 810 24-26 840 24-30
800 32 190 241 530 1710 750 550 1700 1250 380 2040 656 810 920 24-30 950 24-33
900 36 203 241 595 1810 750 550 1965 1250 380 2255 785 863 1020 24-30 1050 28-33
1000 40 216 300 650 1900 900 750 2015 1250 380 2380 785 863 1120 28-30 1160 28-36
1200 48 254 360 775 1180 1000 925 2250 1250 380 2640 785 863 1340 32-33 1380 32-39

 

◆ Main outline connection dimension

DN L H D373H D673H D973H PN1.6MPa PN2.5MPa
mm Inches Short Long H1 A1 B1 H2 A2 B2 H3 A3 B3 D1 Z-Fd D1 Z-Fd
40 11/2 33 33 107 330 180 200 625 245 72 530 250 255 110 4-18 110 4-18
50 2 43 43 112 350 180 200 625 245 72 530 250 255 125 4-18 125 4-18
65 2 46 46 115 370 180 200 625 245 72 530 250 255 145 8-18 145 8-18
80 3 46 64 125 380 180 200 645 245 72 565 250 255 160 8-18 160 8-18
100 4 52 64 138 420 180 200 675 355 92 600 250 255 180 8-18 190 8-22
125 5 56 70 164 460 180 200 715 355 92 640 250 255 210 8-18 220 8-26
150 6 56 76 175 555 270 280 800 355 92 704 300 315 240 8-22 250 8-26
200 8 60 89 215 780 400 425 850 250 170 775 300 315 295 12-22 310 12-26
250 10 68 114 243 840 400 425 925 250 170 945 300 315 355 12-26 370 12-30
300 12 78 114 285 995 450 560 1035 450 220 1070 300 315 410 12-26 430 16-30
350 14 78 127 320 1050 450 560 1070 450 220 1140 300 315 470 16-26 490 16-33
400 16 102 140 350 1220 535 580 1190 450 220 1210 300 315 525 16-30 550 16-36
450 18 114 152 350 1280 535 580 1250 650 280 1335 575 714 585 20-30 600 20-36
500 20 127 152 380 1365 535 580 1290 650 280 1415 575 714 650 20-33 660 20-36
600 24 154 178 435 1460 570 660 1455 850 380 1605 656 810 770 20-36 770 20-39
700 28 165 229 480 1520 750 550 1585 850 380 1844 656 810 840 24-36 875 24-42
800 32 190 241 530 1710 750 550 1700 1250 380 2040 656 810 950 24-39 990 24-48
900 36 203 241 595 1810 750 550 1965 1250 380 2255 785 863 1050 28-39 1090 28-48
1000 40 216 300 650 1900 900 750 2015 1250 380 2380 785 863 1170 28-42 1210 28-56
1200 48 254 360 775 1180 1000 925 2250 1250 380 2640 785 863 1390 32-48 1420 32-56

Note: The flange size in this table is in accordance with JB/T79 standard series 1 and EN 1092-1/2, and the structure length is in accordance with GB/T12221, API609 and EN558 standards.

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