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Hydraulic controlled slow closing check valve

Product Overview

Hydraulic controlled slow closing check valve is a more advanced pipeline control equipment at home and abroad. It is mainly installed at the inlet of hydraulic turbine of hydropower station as the inlet valve of water turbine; or it is installed with the pump outlet of various pump stations such as water conservancy, electric power, water supply and drainage to replace the function of check valve and gate valve. When working, the valve cooperates with the pipeline host to install the principle of water conservancy transition process, which can effectively eliminate the pipeline water hammer through the preset opening and closing procedures, realize the reliable cut-off of the pipeline, and protect 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 widely collecting, researching and summarizing the performance of similar products at home and abroad, introducing a number of research results of 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.

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 L5 L6 H H1 H2 H3 B1 B2 B3 B4 B5 b1 d1 e d2
300 178 435 395 366 26 4 12 23 900 850 100 150 120 180 300 365 800 280 285 900 320 380 683 30 30 24
350 190 490 445 413 28 4 12 23 900 850 100 150 120 180 320 365 800 280 309 930 320 380 713 30 30 24
400 216 540 495 463 32 4 16 23 900 850 120 180 120 180 350 390 880 280 365 980 340 420 765 30 30 24
500 229 645 600 568 34 4 20 23 1200 850 150 220 120 180 400 443 1070 280 440 1145 400 500 830 40 32 24
600 267 755 705 667 35 5 20 26 1275 860 150 250 160 220 460 860 1245 610 525 1210 450 550 965 40 32 65 24
700 292 860 810 772 35 5 24 26 1275 860 180 290 160 220 520 860 1245 610 555 1250 570 700 1005 40 32 65 24
800 318 975 920 878 40 5 24 31 1275 860 180 310 160 220 580 860 1245 610 605 1300 650 780 1055 40 32 65 24
900 330 1075 1020 978 40 5 24 31 1450 860 180 330 160 220 640 935 1350 685 670 1360 700 860 1110 40 35 40 24
1000 410 1175 1120 1078 42 5 28 31 1450 860 200 360 160 220 690 935 1350 685 755 1480 740 900 1237 40 35 40 24
1200 470 1375 1320 1280 45 5 32 31 1450 860 200 360 160 220 810 935 1350 685 855 1580 790 950 1337 40 35 40 24
1300 530 1475 1420 1380 30 5 32 31 1510 870 260 400 160 220 860 1065 1475 820 935 1695 820 960 1468 40 42 40 28
1400 530 1575 1520 1480 30 5 36 31 1765 870 260 400 160 220 940 1065 1475 820 1010 1760 840 1000 1536 40 42 40 28
1500 600 1690 1630 1590 30 5 36 31 1765 870 260 400 160 220 1000 1065 1475 820 1055 1800 900 1040 1572 40 42 40 28
1600 600 1790 1730 1690 32 5 40 31 1765 870 270 400 160 220 1080 1075 1720 820 1120 1875 1100 1300 1598 40 42 40 28
1750 670 1935 1880 1840 32 5 44 31 1960 870 270 500 160 220 1130 1075 1720 820 1175 1910 1350 1500 1682 45 42 40 28
1800 670 1990 1930 1890 34 5 44 31 1960 870 270 500 160 220 1130 1075 1720 820 1210 1940 1370 1570 1708 45 42 40 28
2000 760 2190 2130 2090 34 5 48 31 2060 910 360 560 200 280 1250 1180 1990 910 1380 2080 1400 1650 1848 45 42 40 32
2200 800 2405 2340 2295 36 6 52 34 2060 910 360 600 200 280 1320 1180 1990 910 1480 2180 1600 1880 1948 45 42 40 32
2400 850 2605 2540 2495 38 6 56 34 2150 910 450 600 200 280 1440 1250 2080 980 1590 2350 1740 2020 2118 45 42 40 32
2600 900 2805 2740 2695 40 6 60 34 2150 910 500 700 200 280 1520 1250 2080 980 1770 2470 1850 2200 2238 50 42 40 32
2800 950 3030 2960 2910 42 6 64 37 2060 910 600 750 200 280 1620 1180 1990 1050 2640 2000 2400 2355 50 48 20 32
3000 1000 3230 3160 3110 42 6 68 37 2060 950 600 800 200 280 1720 1180 1990 1050 2820 2160 2560 2535 50 48 20 32
3200 1100 3430 3360 3310 44 6 72 37 2150 950 700 900 200 280 1820 1250 2080 1180 2980 2360 2760 2695 50 48 20 32
3400 1200 3630 3560 3510 46 6 76 37 2150 950 750 1000 200 280 1920 1250 2080 1180 3140 2420 2920 2855 50 48 20 32
3500 1200 3730 3660 3610 48 6 78 37 2150 950 750 1000 200 280 1980 1250 2080 1180 3210 2680 3180 2925 50 48 20 32
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 1000 2200 3200 2950

PN0.6MPa
(mm)
Nominal
diameter 		L D D1 D2 b f n d L1 L2 L3 L4 L5 L6 H H1 H2 H3 B1 B2 B3 B4 B5 b1 d1 e d2
300 178 440 395 363 26 4 12 23 900 850 100 150 120 180 300 365 780 280 280 900 320 380 683 30 30 24
350 190 490 445 413 28 4 12 23 900 850 100 140 120 180 320 365 780 280 305 930 320 380 713 30 30 24
400 216 540 495 463 32 4 16 23 900 850 120 180 120 180 350 390 880 280 365 980 340 420 765 30 30 24
500 229 645 600 568 34 4 20 23 1200 850 150 220 120 180 400 443 1070 280 440 1045 400 500 830 40 32 24
600 267 755 705 667 35 5 20 28 1275 860 150 250 160 220 460 860 1245 610 525 1210 450 550 965 40 32 65 24
700 292 860 810 772 35 5 24 28 1275 860 180 290 160 220 520 860 1245 610 555 1250 570 700 1005 40 32 65 24
800 318 975 920 878 40 5 24 31 1275 860 180 310 160 220 580 860 1245 610 605 1300 650 780 1055 40 32 65 24
900 330 1075 1020 978 40 5 24 31 1450 860 180 320 160 220 640 935 1350 685 670 1360 700 860 1110 40 30 40 24
1000 410 1175 1120 1078 42 5 28 31 1450 860 200 360 160 220 690 935 1350 685 755 1480 740 900 1237 40 35 40 24
1200 470 1405 1340 1295 45 5 32 34 1450 860 200 360 160 220 810 935 1350 685 855 1580 790 950 1337 40 35 40 24
1300 530 1520 1450 1405 35 5 32 37 1510 870 260 400 160 220 860 1065 1475 820 935 1695 820 960 1468 40 42 40 28
1400 530 1630 1560 1510 46 5 36 37 1765 870 260 400 160 220 940 1065 1475 820 1010 1760 840 1000 1536 40 42 40 28
1500 600 1730 1660 1,610 40 5 36 37 1765 870 260 400 160 220 1000 1065 1475 820 1055 1800 900 1040 1572 40 42 40 28
1600 600 1830 1760 1710 50 5 40 37 1765 870 270 400 160 220 1080 1075 1720 820 1120 1875 1100 1300 1598 40 48 40 28
1750 670 1995 1995 1868 50 5 44 40 1960 870 270 500 160 220 1130 1075 1720 820 1175 1910 1350 1500 1682 45 48 40 28
1800 670 2045 1970 1918 52 5 44 40 1960 870 270 500 160 220 1130 1075 1720 820 1210 1940 1370 1570 1708 45 48 40 28
2000 760 2265 1920 2125 40 5 48 43 2060 910 360 560 200 280 1250 1180 1990 910 1380 2080 1400 1650 1848 45 48 40 32
2200 800 2475 2390 2335 42 6 52 48 2060 910 360 600 200 280 1320 1180 1990 910 1480 2180 1600 1880 1948 45 48 40 32
2400 850 2685 2600 2545 45 6 56 48 2150 910 400 600 200 280 1440 1250 2080 980 1590 2180 1740 2020 2118 45 48 40 32
2600 900 2905 2810 2750 46 6 60 49 2150 910 500 700 200 280 1520 1250 2080 980 1770 2470 1850 2200 2238 50 56 40 32
2800 950 3115 3020 2960 48 6 64 49 2050 910 600 750 200 280 1620 1180 1990 1050 2640 2000 2000 2355 50 56 20 32
3000 1000 3315 3220 3160 50 6 68 49 2050 950 600 800 200 280 1720 1180 1990 1050 2820 2160 2560 2535 50 56 20 32
3200 1100 3525 3430 3370 54 6 72 49 2150 950 700 900 200 280 1820 1250 2080 1180 2980 2360 2760 2695 50 56 20 32
3400 1200 3735 3640 3580 56 6 76 49 2150 950 750 1000 200 280 1920 1250 2080 1180 3140 2420 2920 2855 50 56 20 32
3500 1200 3840 3745 3685 58 6 78 49 2150 950 750 1000 200 280 1980 1250 2080 1180 3210 2680 3180 2955 50 56 20 32

PN1.0MPa
(mm)
Nominal
diameter 		L D D1 D2 b f n d L1 L2 L3 L4 L5 L6 H H1 H2 H3 B1 B2 B3 B4 B5 b1 d1 e d2
300 178 445 400 370 26 4 12 23 900 850 100 150 120 180 300 365 780 280 280 900 320 380 683 30 30 65 24
350 190 505 460 429 28 4 16 23 900 850 100 140 120 180 320 365 780 280 305 930 320 380 713 30 30 65 24
400 216 565 515 480 32 4 16 28 900 850 120 180 120 180 350 390 880 280 365 980 340 420 765 30 30 65 24
500 229 670 620 582 34 4 20 28 1200 850 150 220 120 180 400 443 1070 280 440 1045 400 500 830 40 32 40 24
600 267 780 725 682 35 5 20 31 1275 860 150 250 160 220 460 860 1245 610 525 1210 450 550 965 40 32 40 24
700 292 895 840 794 35 5 24 31 1275 860 180 290 160 220 520 860 1245 610 555 1250 570 700 1005 40 32 40 24
800 318 1015 950 901 40 5 24 34 1275 860 180 310 160 220 580 860 1245 610 605 1300 650 780 1055 40 32 40 24
900 330 1115 1050 1001 40 5 28 34 1450 860 180 320 160 220 640 935 1350 685 670 1360 700 860 1110 40 35 40 24
1000 410 1230 1160 1112 42 5 28 37 1450 860 200 360 160 220 690 935 1350 685 755 1480 740 900 1237 40 35 40 24
1100 470 1340 1270 1222 42 5 28 37 1450 860 200 360 160 220 750 935 1350 685 805 1530 760 920 1287 40 35 40 24
1200 470 1455 1380 1328 45 5 32 40 1450 860 200 360 160 220 810 935 1350 685 855 1580 790 950 1337 40 35 40 24
1250 530 1505 1430 1378 45 5 32 40 1510 870 200 360 160 220 810 1065 1475 760 910 1670 1140 1280 1442 40 42 40 24
1300 530 1575 1490 1425 45 5 32 43 1510 870 260 400 160 220 860 1065 1475 820 935 1695 820 960 1468 40 42 40 28
1400 530 1675 1590 1530 46 5 36 43 1765 870 260 400 160 220 940 1065 1475 820 1010 1760 840 1000 1536 40 42 40 28
1500 600 1785 1700 1640 46 5 36 49 1765 870 260 400 160 220 1000 1065 1475 820 1055 1800 900 1040 1572 40 42 40 28
1600 600 1915 1820 1750 50 5 40 49 1765 870 270 400 160 220 1080 1075 1020 820 1120 1875 1100 1300 1598 40 48 40 28
1750 670 2065 1970 1900 50 5 44 49 1960 870 270 500 160 220 1130 1075 1720 820 1175 1910 1350 1500 1682 45 48 40 28
1800 670 2115 2020 1950 52 5 44 49 1960 870 270 500 160 220 1130 1075 1720 820 1210 1940 1370 1570 1708 45 48 40 28
2000 760 2325 2230 2150 54 5 48 49 2060 910 360 560 200 280 1250 1180 1895 910 1380 2080 1400 1650 1848 45 48 32
2200 800 2550 2440 2370 58 5 52 56 2060 910 360 600 200 280 1320 1180 1990 910 1480 2180 1600 1880 1948 45 56 32
2250 800 2600 2490 2420 60 5 52 56 2060 910 360 600 200 280 1330 1180 1990 910 1510 2210 1600 1880 1978 45 56 32
2400 850 2760 2650 2570 65 6 56 56 2150 910 450 600 200 280 1440 1250 2080 980 1590 2350 1740 2020 2118 45 56 32

PN1.6MPa
(mm)
Nominal diameter 		L D D1 D2 b f n d L1 L2 L3 L4 L5 L6 H H1 H2 H3 B1 B2 B3 B4 B5 b1 d1 e d2
300 178 460 410 375 26 4 12 27 900 850 100 150 120 180 300 365 780 280 280 900 320 380 683 30 30 65 24
350 190 520 470 429 28 4 16 27 900 850 100 140 120 180 320 365 780 280 305 930 320 380 713 30 30 65 24
400 216 580 525 480 32 4 16 31 900 850 120 180 120 180 350 390 880 280 365 980 340 420 765 30 30 65 24
500 229 715 650 609 34 4 20 34 1200 850 150 220 120 180 400 443 1070 280 440 1045 400 500 830 40 32 40 24
600 267 840 770 720 35 5 20 37 1275 860 150 250 160 220 460 860 1245 610 525 1210 450 550 965 40 32 40 24
700 292 910 840 794 35 5 24 37 1275 860 180 290 160 220 520 860 1245 610 555 1250 570 700 1005 40 32 40 24
800 318 1025 950 901 40 5 24 40 1275 860 180 310 160 220 580 860 1245 610 605 1300 650 780 1055 40 32 40 24
900 330 1125 1050 1001 40 5 28 40 1450 860 180 320 160 220 640 935 1350 685 670 1360 700 860 1110 40 35 40 24
1000 410 1255 1170 1112 42 5 28 43 1450 860 200 360 160 220 690 935 1350 685 755 1480 740 900 1237 40 35 40 24
1100 470 1370 1280 1222 42 5 28 43 1450 860 200 360 160 220 750 935 1350 685 805 1530 760 920 1287 40 35 40 24
1200 470 1485 1390 1328 45 5 32 49 1510 870 200 360 160 220 810 1065 1475 760 855 1605 790 950 1387 40 35 40 24
1250 530 1535 1440 1378 46 5 32 49 1510 870 200 360 160 220 810 1065 1475 760 910 1670 1140 1280 1442 40 42 40 24
1300 530 1585 1490 1425 50 5 32 49 1510 870 260 400 160 220 860 1065 1475 820 935 1695 820 960 1468 40 42 40 28
1400 530 1685 1590 1530 54 5 36 49 1765 870 260 400 160 220 940 1065 1475 820 1010 1760 840 1000 1536 40 42 40 28
1500 600 1820 1710 1640 54 5 36 49 1765 870 260 400 160 220 1000 1075 1720 820 1055 1800 900 1040 1572 40 42 40 28
1600 600 1930 1820 1750 56 5 40 56 1765 870 270 400 160 220 1080 1075 1720 820 1120 1875 1100 1300 1598 40 48 40 28
1750 670 2080 1970 1900 60 5 44 56 1960 870 270 500 160 220 1130 1075 1720 820 1175 1910 1350 1500 1682 45 48 40 28
1800 670 2130 2020 1950 60 5 44 56 1960 870 270 500 160 220 1130 1075 1720 820 1210 1940 1370 1570 1708 45 48 28
2000 760 2345 2230 2150 65 5 48 62 2060 910 360 560 200 280 1250 1180 1895 910 1380 2080 1370 1650 1848 45 48 32
2200 800 2555 2440 2360 70 5 52 62 2060 910 360 600 200 280 1320 1180 1990 910 1480 2180 1600 1880 1948 45 56 32
2250 800 2605 2490 2410 70 5 52 62 2060 910 360 600 200 280 1330 1180 1990 910 1510 2210 1600 1880 1978 45 56 32

PN2.5MPa
(mm)
Nominal
diameter 		L D D1 D2 b f n d L1 L2 L3 L4 L5 L6 H H1 H2 H3 B1 B2 B3 B4 B5 b1 d1 e d2
300 178 485 430 389 34 4 16 31 900 850 100 150 120 180 300 365 780 280 280 838 320 380 683 30 32 65 24
350 190 555 490 448 38 4 16 34 900 850 100 140 120 180 320 365 780 280 305 868 320 380 713 30 32 65 24
400 216 620 550 503 40 4 16 37 1275 860 120 180 160 220 350 860 1245 610 365 970 340 420 815 30 32 40 24
500 229 730 660 609 44 4 20 37 1275 860 150 220 160 220 400 860 1245 610 440 1090 400 500 880 40 35 40 24
600 267 845 770 720 46 5 20 40 1275 860 150 250 160 220 460 860 1245 610 525 1210 450 550 965 40 35 40 24
700 292 960 875 820 50 5 24 43 1450 860 180 290 160 220 520 935 1350 685 555 1250 570 700 1005 40 35 40 24
800 318 1085 990 928 54 5 24 49 1450 860 180 310 160 220 580 935 1350 685 605 1300 650 780 1055 40 38 40 24
900 330 1185 1090 1028 58 5 28 49 1450 860 180 320 160 220 640 935 1350 685 670 1360 700 860 1110 40 38 40 24
1000 410 1320 1210 1140 62 5 28 56 1510 870 200 360 160 220 690 1065 1475 760 755 1505 740 900 1287 40 42 40 24
1100 470 1425 1315 1245 65 5 28 56 1510 870 200 360 160 220 750 1065 1475 760 805 1555 760 920 1337 40 42 40 24
1200 470 1530 1420 1350 70 5 32 56 1765 870 200 360 160 220 810 1065 1475 760 855 1605 790 950 1387 40 48 40 24
1250 530 1575 1470 1400 70 5 32 56 1765 870 200 360 160 220 810 1065 1475 760 910 1670 1140 1280 1442 40 48 40 24
1300 530 1640 1530 1450 74 5 32 62 1765 870 260 400 160 220 860 1065 1475 820 935 1695 820 960 1468 40 48 40 28
1400 530 1755 1640 1560 76 5 36 62 1960 870 260 400 160 220 940 1075 1720 820 1010 1760 840 1000 1536 40 52 40 28
1500 600 1865 1750 1670 80 5 36 62 1960 870 260 400 160 220 1000 1075 1720 820 1055 1800 900 1040 1572 40 52 40 28
1600 600 1975 1860 1780 84 5 40 62 1960 870 270 400 160 220 1080 1075 1720 820 1120 1875 1100 1300 1598 40 56 40 28
1750 670 2145 2020 1935 90 5 44 70 2060 910 270 500 200 280 1130 1180 1895 910 1175 1935 1350 1500 1732 45 56 28
1800 670 2195 2070 1985 90 5 44 70 2060 910 270 500 200 280 1130 1180 1895 910 1210 1965 1370 1570 1758 45 56 28
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