double sealing hydraulic automatic control valve
technical parameter
item model number: bfdz701hr
nominal diameter: dn700~ dn3000mm
nominal pressure: 0.6~ 2.5mpa
applicable temperature: 0~80℃
applicable medium: clean water, sewage, raw water, oil, etc.
sealing performance: gb/t13927 standard
product description
double sealing hydraulic automatic control valve is a product developed by our company on the basis of digesting the excellent performance of many valves such as micro-resistance slow-closing check valve, hydraulic control butterfly valve, multi-functional hydraulic control valve and so on. it has the functions of electric gate valve, electric butterfly valve and check valve, and eliminates water hammer hazards through quick closing and slow closing actions, and protects the safety of water pumps and pipe network systems. widely used in electric power, metallurgy, urban construction, water supply and drainage and other automatic pumping station systems.
product features
1. cut-off check: when the pump is stopped, the medium of the pipe network is cut off to prevent backflow;
2. start the pump at light load: first open the valve, then start the pump, start the pump under light load, reduce the starting current of water, and protect the safety of electrical equipment used in the power grid;
3. elimination of water hammer: when the pump is stopped, the large valve plate closes quickly, and the small valve plate closes slowly to eliminate destructive water hammer;
4. pump-valve linkage: the water pump and valve are electrically interlocked and automatically controlled according to the set procedure, without manual intervention;
5. opening degree display: the opening height of the valve can be observed locally, or a valve position signal display device can be selected to realize remote digital display;
6. it can also output 4-20ma dc current for centralized computer control.
product structure model
code | bfdz701 | bfdz702 | bfdz703 | bfdz704 |
product | normal type | adjustable | sewage type | low pressure |
material of main parts
no | seal type code | seat sealing surface | plate sealing surface | |
1 | soft and hard composite seal | yx | carbide | carbide rubber |
2 | hx | stainless steel | stainless steel rubber | |
3 | hard seal | y | carbide | carbide |
4 | h | stainless steel | stainless steel |
main external connection dimensions
dn | l | d | d1 | n-d | b | l1 | l2 | h1 | h | a | b |
700 | 430 | 895 | 840 | 24-30 | 34 | 850 | 1350 | 520 | 1280 | 230 | 760 |
800 | 470 | 1015 | 950 | 24-33 | 34 | 900 | 1500 | 550 | 1320 | 350 | 820 |
900 | 510 | 1115 | 1050 | 28-33 | 36 | 950 | 1540 | 630 | 1400 | 408 | 950 |
1000 | 550 | 1230 | 1160 | 28-36 | 38 | 1130 | 1790 | 700 | 1520 | 430 | 1040 |
1200 | 630 | 1455 | 1380 | 32-39 | 44 | 1270 | 2035 | 800 | 1750 | 475 | 1240 |
1400 | 710 | 1675 | 1590 | 36-42 | 48 | 1350 | 2260 | 900 | 1740 | 525 | 1450 |
1600 | 790 | 1915 | 1820 | 40-48 | 52 | 1780 | 2830 | 1020 | 2000 | 610 | 1520 |
1800 | 870 | 2115 | 2020 | 44-48 | 56 | 1850 | 3010 | 1175 | 2350 | 600 | 1620 |
2000 | 950 | 2325 | 2230 | 48-48 | 60 | 2000 | 3210 | 1250 | 2430 | 743 | 1800 |
2200 | 1000 | 2550 | 2440 | 52-62 | 64 | 2120 | 3480 | 1320 | 2600 | 808 | 1980 |
2400 | 1100 | 2760 | 2650 | 56-56 | 68 | 2240 | 3720 | 1430 | 2810 | 856 | 2320 |
2600 | 1200 | 2905 | 2810 | 60-48 | 72 | 2440 | 3960 | 1500 | 2950 | 900 | 2380 |
2800 | 1300 | 3115 | 3020 | 64-48 | 76 | 2550 | 4220 | 1600 | 3160 | 1025 | 2520 |
3000 | 1400 | 3315 | 3200 | 68-48 | 80 | 2680 | 4460 | 1700 | 3360 | 1102 | 2990 |