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Accumulative fluid controlled slow closing check butterfly valve

Product Overview

Accumulative fluid controlled slow closing check butterfly valve is an advanced piping control equipment at home and abroad. It is mainly installed at the turbine inlet of hydropower station and serves as the turbine inlet valve. It is also installed at the pump outlet of various pumping stations such as water conservancy, power supply and drainage to replace the function of check valve and gate valve.When working, the valve cooperates with the main engine and according to the principle of hydraulic transition process, through preset opening and closing procedure, effectively eliminates water hammer in the pipeline, realizes reliable cut-off of the pipeline and plays a role in protecting the safety of the pipeline system.

Structural characteristics

Hydraulic control slow closing check butterfly valve is an advanced pipeline control equipment at home and abroad. It is mainly installed at the inlet of hydraulic turbine of hydropower station and used as the inlet valve of water turbine; or it is installed at the outlet of water conservancy, electric power, water supply and drainage pump stations to replace the function of check valve and gate valve. When working, the valve cooperates with the pipeline host, according to the hydraulic transition process principle, through the preset opening and closing procedures, effectively eliminates the pipeline water hammer, realizes the reliable cut-off of the pipeline, and plays a role in protecting the safety of the pipeline system. The hydraulic control slow closing check butterfly valve produced by our company has small flow resistance coefficient, high degree of automation, complete functions, stable and reliable performance. It is a new generation of intelligent, efficient and energy-saving products developed by our company's designers on the basis of extensive collection, research and summary of the performance of similar products at home and abroad, and the introduction of a number of research results in valve, hydraulic, electrical and other industries 。 The company has strong technical force, and can be designed independently according to the special requirements of users, so as to meet the needs of the majority of users.
The main features of the product are as follows:
a. It can replace the function of the original electric gate valve and check valve at the outlet of the water pump, and the mechanical, electrical and hydraulic systems are integrated as a whole to reduce the floor space and infrastructure investment.
b. The electro-hydraulic control function is complete, which can be used as an independent system for on-site debugging and control without additional configuration; it can also be used as an equipment unit of distributed control system (DCS), which is centrally managed by the central computer through 1 / 0 channel, and realizes linkage operation with water pump, turbine, bypass valve and other pipeline equipment; it is also equipped with manual function without power supply The valve can also be opened and closed manually to meet the requirements of valve debugging and control under special working conditions.
c. It has good controllability, wide adjustment range and strong adaptability. The electro-hydraulic control system is equipped with multiple adjusting nodes, which can be set for opening and closing procedures according to different pipeline control requirements, so as to ensure that when the conditions of opening and closing the valve are met, the valve can and can be opened automatically according to the preset time, angle and two-stage closing, fast and slow. It can effectively eliminate the destructive water hammer, prevent the runaway accidents of pumps and turbine units, reduce the pressure fluctuation of the pipe network system, and ensure the safe and reliable operation of the equipment.
d. The sealing pair of the main valve is three side eccentric metal seal or double eccentric rubber seal structure, which is easy to open and close and reliable to seal. There is an additional eccentricity to make the valve have good self closing and self sealing performance. The medium and small diameter butterfly plates are designed as streamline flat plate structure, and the large diameter butterfly valve is designed with double plate truss structure. The flow resistance coefficient of the valve is only 0.1 ~ 0.6, which is far less than that of the check valve (1.7 ~ 2.6).

Execution standard

Product standard: GB/T 14478, GB/T 12238, JB/T 8527
Transmission: JB/T5299
Structure length: GB/T12221
Pipe flange: gray cast iron flange GB/T17241.6, ductile cast iron flange GB12380.1~12380.3, steel flange GB/T9113, JB/T79, HG/T20592
Accumulator standard: GB/T2352-2003
Test and inspection: GB/T14478, GB/T13927
Quality assurance: ISO9001:2008

Performance parameter

Main materials: gray cast iron, ductile cast iron, carbon steel
Nominal diameter: DN300~4000mm
Nominal pressure: PN0.25~ 4.0mpa
Applicable temperature: < 80℃
Applicable medium: clean water, sea water, sediment water, oil, etc

Product Dimensions

PN0.25MPa
(mm) Nominal diameter L D D1 D2 b f n d L1 L2 L3 L4 H H1 H2 B1 B2 B3 B4 b1 d1
300 178 435 395 366 26 4 12 23 210 705 100 150 300 650 860 280 765 320 380 30 30
350 190 490 445 413 28 4 12 23 210 705 100 140 320 650 860 305 810 320 380 30  30
400 216 540 495 463 32 4 16 23 210 705 120 180 350 650 860 365 860 340 420 30 30
500 229 645 600 568 34 4 20 23 210 705 150 220 400 650 860 440 930 400 500 40  32
600 267 755 705 667 35 5 20 26 235 740 150 250 460 730 1020 525 1066 450 550 40 32
700 292 860 810 772 35 5 24 26 235 740 180 290 520 730 1020 555 1080 570 700 40  32
800 318 975 920 878 40 5 24 31 335 740 180 310 580 730 1020 605 1240 650 780 40 32
900 330 1075 1020 978 40 5 24 31 380 890 180 320 640 960 1160 670 1310 700 860 40  35
1000 410 1175 1120 1078 42 5 28 31 380 890 200 360 690 960 1160 755 1360 740 900 40 35
1200 470 1375 1320 1280 45 5 32 31 380 890 200 360 810 960 1160 855 1500 790 950 40  35
1300 530 1475 1420 1380 30 5 32 31 460 920 260 400 860 1040 1210 935 1565 820 960 40 42
1400 530 1575 1520 1480 30 5 36 31 460 920 260 400 940 1040 1210 1010 1630 840 1000 40  42
1500 600 1690 1630 1590 30 5 36 31 460 920 260 400 1000 1040 1210 1055 1670 900 1040 40 42
1600 600 1790 1730 1690 32 5 40 31 540 980 270 400 1080 1105 1320 1120 1830 1100 1300 40  42
1750 670 1935 1880 1840 32 5 44 31 540 980 270 500 1130 1105 1320 1175 1955 1350 1500 45 42
1800 670 1990 1930 1890 34 5 44 31 540 980 270 500 1130 1105 1320 1210 1980 1370 1570 45  42
2000 760 2190 2130 2090 34 5 48 31 680 1040 360 560 1250 1250 1380 1380 2250 1370 1650 45 42
2200 800 2405 2340 2295 36 6 52 34 680 1040 360 600 1320 1250 1380 1480 2350 1600 1880 45  42
2400 850 2605 2540 2495 38 6 56 34 850 1090 450 600 1440 1360 1540 1590 2470 1740 2020 45 42
2600 900 2805 2740 2695 40 6 60 34 850 1090 500 700 1520 1360 1540 1670 2520 1850 2200 50  42
2800 950 3030 2960 2910 42 6 64 37 850 1090 600 750 1620 1360 1540 1775 2630 2000 2400 50 48
3000 1000 3230 3160 3110 42 6 68 37 920 1140 600 800 1720 1430 1620 1885 2770 2160 2560 50  48
3200 1100 3430 3360 3310 44 6 72 37 920 1140 700 900 1820 1430 1620 1970 2910 2360 2760 50 48
3400 1200 3630 3560 3510 46 6 76 37 920 1140 750 1000 1920 1430 1620 2060 3050 2420 2920 50  48
3500 1200 3730 3660 3610 48 6 78 37 920 1140 750 1000 1980 1430 1620 2110 3120 2680 3180 50 48
3600 1200 3840 3770 3720 48 6 80 37 750 1000 2050 3000 2750
3800 1200 4045 3970 3920 48 6 80 40 750 1000 2100 3100 2850
4000 1300 4245 4170 4020 50 6 84 40 800 1100 2200 3200 2950

PN0.6MPa
(mm) Nominal diameter L D D1 D2 b f n d L1 L2 L3 L4 H H1 H2 B1 B2 B3 B4 b1 d1
300 178 440 395 363 26 4 12 23 210 705 100 150 300 650 860 280 765 320 380 30 30
350 190 490 445 413 28 4 12 23 210 705 100 140 320 650 860 305 810 320 380 30  30
400 216 540 495 463 32 4 16 23 210 705 120 180 350 650 860 365 860 340 420 30 30
500 229 645 600 568 34 4 20 23 210 705 150 220 400 650 860 440 930 400 500 40  32
600 267 755 705 667 35 5 20 28 235 740 150 250 460 730 1020 525 1066 450 550 40 32
700 292 860 810 772 35 5 24 28 235 740 180 290 520 730 1020 555 1080 470 700 40  32
800 318 975 920 878 40 5 24 31 235 740 180 310 580 730 1020 605 1240 650 780 40 32
900 330 1075 1020 978 40 5 24 31 380 890 180 320 640 960 1160 670 1310 700 860 40  35
1000 410 1175 1120 1078 42 5 28 31 380 890 200 360 690 960 1160 755 1360 740 900 40 35
1200 470 1405 1340 1295 45 5 32 34 380 890 200 360 810 960 1160 855 1500 790 950 40  35
1300 530 1520 1450 1405 35 5 32 37 460 920 260 400 860 1040 1210 935 1565 820 960 40 42
1400 530 1630 1560 1510 46 5 36 37 460 920 260 400 940 1040 1210 1010 1630 840 1000 40  42
1500 600 1730 1660 1610 40 5 36 37 460 920 260 400 1000 1040 1210 1055 1670 900 1040 40 42
1600 600 1830 1760 1710 50 5 40 37 540 980 270 400 1080 1105 1320 1120 1830 1100 1300 40  48
1750 670 1995 1920 1868 50 5 44 40 540 980 270 500 1130 1105 1320 1175 1955 1350 1500 45 48
1800 670 2045 1970 1918 52 5 44 40 540 980 270 500 1130 1105 1320 1210 1980 1370 1570 45  48
2000 760 2265 2180 2125 40 5 48 43 680 1040 360 560 1250 1250 1380 1380 2250 1370 1650 45 48
2200 800 2475 2390 2335 42 6 52 43 680 1040 360 600 1320 1250 1380 1480 2350 1600 1880 45  48
2400 850 2685 2600 2545 45 6 56 43 850 1090 450 600 1440 1360 1540 1590 2470 1740 2020 45 48
2600 900 2905 2810 2750 46 6 60 49 850 1090 500 700 1520 1360 1540 1670 2520 1850 2200 50  56
2800 950 3115 3020 2960 48 6 64 49 850 1090 600 750 1620 1360 1540 1775 2630 2000 2400 50 56
3000 1000 3315 3220 3160 50 6 68 49 920 1140 600 800 1720 1430 1620 1885 2770 2160 2560 50  56
3200 1100 3525 3430 3370 54 6 72 49 920 1140 700 900 1820 1430 1620 1970 2910 2360 2760 50 56
3400 1200 3735 3640 3580 56 6 76 49 920 1140 750 1000 1920 1430 1620 2060 3050 2420 2920 50  56
3500 1200 3840 3745 3685 58 6 78 49 920 1140 750 1000 1980 1430 1620 2110 3120 2680 3180 50 56

PN1.0MPa
(mm) Nominal diameter L D D1 D2 b f n d L1 L2 L3 L4 H H1 H2 B1 B2 B3 B4 b1 d1
300 178 445 400 370 26 4 12 23 210 705 100 150 300 650 860 280 765 320 380 30 30
350 190 505 460 429 28 4 16 23 210 705 100 140 320 650 860 305 810 320 380 30  30
400 216 565 515 480 32 4 16 28 210 705 120 180 350 650 860 365 860 340 420 30 30
500 229 670 620 582 34 4 20 28 210 705 150 220 400 650 860 440 930 400 500 40  32
600 267 780 725 682 35 5 20 31 235 740 150 250 460 730 1020 525 1066 450 550 40 32
700 292 895 840 794 35 5 24 31 235 740 180 290 520 730 1020 555 1080 570 700 40  32
800 318 1015 950 901 40 5 24 34 235 740 180 310 580 730 1020 605 1240 650 780 40 32
900 330 1115 1050 1001 40 5 28 34 380 890 180 320 640 960 1160 670 1310 700 860 40  35
1000 410 1230 1160 1112 42 5 28 37 380 890 200 360 690 960 1160 755 1360 740 900 40 35
1100 470 1340 1270 1222 42 5 28 37 380 890 200 360 750 960 1160 805 1410 760 920 40  35
1200 470 1455 1380 1328 45 5 32 40 380 820 200 360 810 960 1160 855 1500 790 950 40 35
1250 530 1505 1430 1378 45 5 32 40 380 890 200 360 810 960 1160 910 1525 1140 1280 40  42
1300 530 1575 1490 1425 45 5 32 43 460 920 260 400 860 1040 1210 935 1565 820 960 40 42
1400 530 1675 1590 1530 46 5 36 43 460 920 260 400 940 1040 1210 1010 1630 840 1000 40  42
1500 600 1785 1700 1640 46 5 36 49 460 920 260 400 1000 1040 1210 1055 1670 900 1040 40 42
1600 600 1915 1820 1750 50 5 40 49 540 980 270 400 1080 1105 1320 1120 1830 1100 1300 40  48
1750 670 2065 1970 1900 50 5 44 49 540 980 270 500 1130 1105 1320 1175 1955 1350 1500 45 48
1800 670 2115 2020 1950 52 5 44 49 540 980 270 500 1130 1105 1320 1210 1980 1370 1570 45  48
2000 760 2325 2230 2150 54 5 48 49 680 1040 360 560 1250 1250 1380 1380 2250 1370 1650 45 48
2200 800 2550 2440 2370 58 5 52 56 680 1040 360 600 1320 1250 1380 1480 2350 1600 1880 45  56
2250 800 2600 2490 2420 60 5 52 56 680 1040 360 600 1330 1250 1380 1510 2375 1600 1880 45 56
2400 850 2760 2650 2570 65 6 56 56 850 1090 450 600 1440 1360 1540 1590 2470 1740 2020 45  56

PN1.6MPa
(mm) Nominal diameter L D D1 D2 b f n d L1 L2 L3 L4 H H1 H2 B1 B2 B3 B4 b1 d1
300 178 460 410 375 26 4 12 27 210 705 100 150 300 650 860 280 765 320 380 30 30
350 190 520 470 429 28 4 16 27 210 705 100 140 320 650 860 305 810 320 380 30 30
400 216 580 525 480 32 4 16 31 210 705 120 180 350 650 860 365 860 340 420 30 30
500 229 715 650 609 34 4 20 34 210 705 150 220 400 650 860 440 930 400 500 40 32
600 267 840 770 720 35 5 20 37 235 740 150 250 460 730 1020 525 1066 450 550 40 32
700 292 910 840 794 35 5 24 37 235 740 180 290 520 730 1020 555 1080 570 700 40 32
800 318 1025 950 901 40 5 24 40 235 740 180 310 580 730 1020 605 1240 650 780 40 32
900 330 1125 1050 1001 40 5 28 40 380 890 180 320 640 960 1160 670 1310 700 860 40 35
1000 410 1255 1170 1112 42 5 28 43 380 890 200 360 690 960 1160 755 1360 740 900 40 35
1100 470 1370 1280 1222 42 5 28 43 380 890 200 360 750 960 1160 805 1410 760 920 40 35
1200 470 1485 1390 1328 45 5 32 49 380 890 200 360 810 960 1160 855 1500 790 950 40 35
1250 530 1535 1440 1378 46 5 32 49 460 920 200 360 810 1040 1210 910 1525 1140 1280 40 42
1300 530 1585 1490 1425 50 5 32 49 460 920 260 400 860 1040 1210 935 1565 820 960 40 42
1400 530 1685 1590 1530 54 5 36 49 460 920 260 400 940 1040 1210 1010 1630 840 1000 40 42
1500 600 1820 1710 1640 54 5 36 49 460 920 260 400 1000 1040 1210 1055 1670 900 1040 40 42
1600 600 1930 1820 1750 56 5 40 56 540 980 270 400 1080 1105 1320 1120 1830 1100 1300 40 48
1750 670 2080 1970 1900 60 5 44 56 540 980 270 500 1130 1105 1320 1175 1955 1350 1500 45 48
1800 670 2130 2020 1950 60 5 44 56 540 980 270 500 1130 1105 1320 1210 1980 1370 1570 45 48
2000 760 2345 2230 2150 65 5 48 62 680 1040 360 560 1250 1250 1380 1380 2250 1370 1650 45 48
2200 800 2555 2440 2360 70 5 52 62 680 1040 360 600 1320 1250 1380 1480 2350 1600 1880 45 56
2250 800 2605 2490 2410 70 5 52 62 680 1140 360 600 1330 1250 1380 1510 2375 1600 1880 45 56

PN2.5MPa
(mm) Nominal diameter L D D1 D2 b f n d L1 L2 L3 L4 H H1 H2 B1 B2 B3 B4 b1 d1
300 178 485 430 389 34 4 16 31 210 705 100 150 300 650 860 280 765 320 380 30 32
350 190 555 490 448 38 4 16 34 210 705 100 140 320 650 860 305 810 320 380 30  32
400 216 620 550 503 40 4 16 37 235 740 120 180 350 730 1020 365 860 340 420 30 32
500 229 730 660 609 44 4 20 37 235 740 150 220 400 730 1020 440 930 400 500 40  15
600 267 845 770 720 46 5 20 40 235 740 150 250 460 730 1020 525 1066 450 550 40 35
700 292 960 875 820 50 5 24 43 380 890 180 290 520 960 1160 555 1080 570 700 40  35
800 318 1085 990 928 54 5 24 49 380 890 180 310 580 960 1160 605 1240 650 780 40 38
900 330 1185 1090 1028 58 5 28 49 380 890 180 320 640 960 1160 670 1310 700 860 40  38
1000 410 1320 1210 1140 62 5 28 56 460 920 200 360 690 1040 1210 755 1360 740 900 40 42
1100 470 1425 1315 1245 65 5 28 56 460 920 200 360 750 1040 1210 805 1410 760 920 40  42
1200 470 1530 1420 1350 70 5 32 56 460 920 200 360 810 1040 1210 855 1500 790 950 40 48
1250 530 1575 1470 1400 70 5 32 56 460 920 200 360 810 1040 1210 910 1525 1140 1280 40  48
1300 530 1640 1530 1450 74 5 32 62 460 920 260 400 860 1040 1210 935 1565 820 960 40 48
1400 530 1755 1640 1560 76 5 36 62 540 980 260 400 940 1105 1320 1010 1630 840 1000 40  52
1500 600 1865 1750 1670 80 5 36 62 540 980 260 400 1000 1105 1320 1055 1670 900 1040 40 52
1600 600 1975 1860 1780 84 5 40 62 540 980 270 400 1080 1105 1320 1120 1830 1100 1300 40  56
1750 670 2145 2020 1935 90 5 44 70 680 1040 270 500 1130 1250 1380 1175 1955 1350 1500 45 56
1800 670 2195 2070 1985 90 5 44 70 680 1040 270 500 1130 1250 1380 1210 1980 1370 1570 45  56
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