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Blast Furnace Gas Cut Off Valve

Blast Furnace Gas Cut Off Valve

Application
Blast furnace gas cut off valve is widely applied in blast furnace hot stove system of iron and steel enterprises as chimney valve, air cut off valve, coal gas cut off valve, exhaust valve, cold air valve.

Features
1. The control signal adopts a 24V or 220V proximity switch.
2. Blast furnace gas cut off valve can be driven electrically or hydraulically.
3. Blast furnace gas cut off valve has single valve plate. It features compact structure and flexible operation.
4. The size of connecting flanges meets the standard of GB/T9119.
5. Out test method is in line with GB/T13927 standard.
6. There is no slant compression device on the valve body and valve plate to ensure the good sealing effect of valve when there is no back pressure.

Technical Parameters
Type Parameters ZR743H-2 ZR741H-2 (4) ZR941H-2 (4)
DN700~1100 DN800~2000 DN800~2000
Nominal pressure (Mpa) 0.2 0.4 0.4
Strength test pressure (Mpa) 0.3 0.6 0.6
Sealing test pressure (Mpa) 0.22 0.44 0.44
Working temperature (℃) ≤420
Medium Air, coal gas, fume
Leakage rate (mm3/s) 150 ×DN
Connecting flanges GB/T9119
Material of Main Parts
Name of parts Valve body Valve plate Sealing surface Valve rod Stuffing
Material Cast iron, steel plate Nickel-plated chrome alloy 40Cr or 45# steel hardening and tempering Asbestos, graphite
ZR743H-2 Gas Cut off Valve
Hydraulic Actuator Parameters
Cylinder Limit switch
Diameter Oil pressure Port size Voltage Current
100mm 8MPa M18 ×1.5 24V, 220V 0.8-8mA
Limit switch Type Voltage Current
IAS-2408LA 220V 0.5mA~8mA
Main Structure Dimension /Unit: mm
DN D D0 D1 L L1 H H1 B b N- φd Weight(KG)
700 895 700 840 600 493 2171 525 970 35 24- φ30 2500
800 1015 800 950 680 526 2538 630 1180 40 24- φ33 2800
900 1115 900 1050 750 526 2796 720 1280 40 28- φ33 3200
1000 1230 1000 1160 750 535 3190 750 1380 40 28- φ36 4000
1100 1305 1100 1240 750 555 3345 800 1490 40 28- φ33 4500
ZR741H-4 Gas Cut off Valve
Hydraulic Actuator Parameters
Cylinder Limit switch
Diameter Oil pressure Port size Voltage Current
100mm 8MPa M18 ×1.5 24V, 220V 0.8-8mA
Main Structure Dimension /Unit: mm
DN D D0 D1 L A A1 A2 H H1 b N- φd Weight(KG)
800 1015 800 950 680 1180 1300 890 3900 3225 40 24- φ33 4800
900 1115 900 1050 750 1280 1350 940 4175 3448 40 28- φ33 5150
1000 1230 1000 1160 750 1380 1500 990 4640 3860 40 28- φ36 5960
1100 1305 1100 1240 750 1480 1550 1040 4940 4110 50 28- φ33 6550
1200 1420 1200 1350 800 1590 1605 1090 5275 4390 50 28- φ36 7235
1300 1520 1300 1450 800 1700 1660 1150 5575 4635 50 32- φ36 8920
1400 1650 1400 1560 850 1850 1765 1225 5900 4900 55 36- φ36 10450
1600 1870 1600 1770 850 2080 2074 1340 6620 5545 55 44- φ39 11800
1800 2060 1780 1970 900 2200 2100 1400 7215 6015 65 48- φ39 13590
2000 2280 1980 2180 900 2440 2270 1520 7815 6510 65 48- φ45 15820
ZR941H-4 Gas Cut off Valve
Electric Actuator Parameters
Electric actuator Limit switch
Type Voltage Power Voltage Current
RDY300-A AC, 380V 3KW 24V, 220V 0.5-20mA
Main Structure Dimension /Unit: mm
DN D D0 D1 L A A1 A2 H H1 b N- φd Weight(KG)
800 1015 800 950 680 1180 1020 1060 3830 3155 40 24- φ33 4800
900 1115 900 1050 750 1280 1020 1060 4110 3380 40 28- φ33 5150
1000 1230 1000 1160 750 1380 1120 1160 4510 3730 40 28- φ36 5960
1100 1305 1100 1240 750 1480 1120 1160 4810 3980 50 28- φ33 6550
1200 1420 1200 1350 800 1590 1120 1160 5150 4260 50 28- φ36 7235
1300 1520 1300 1450 800 1700 1120 1160 5420 4480 50 32- φ36 8920
1400 1650 1400 1560 850 1850 1150 1190 5740 4740 55 36- φ36 10450
1600 1870 1600 1770 850 2080 1300 1340 6750 5675 55 44- φ39 11800
1800 2060 1780 1970 900 2200 1340 1420 7320 6120 65 48- φ39 13590
2000 2280 1980 2180 900 2440 1450 1550 7920 6615 65 48- φ45 15820
ZR741W-2(4) Hydraulic Cut off Valve
Technical Parameters
Working temperature ≤400 ℃
Working pressure 0.3MPa
Medium Fume, hot air
Cylinder diameter 50mm
Oil pressure 8MPa
Main Structure Dimension /Unit: mm
DN D D1 L B H H1 N- φd Weight(KG)
150 265 225 300 22 1260 190 8-17.5 150
200 320 280 300 22 1410 220 8-17.5 175
250 375 335 340 25 1560 250 12-17.5 200
300 440 395 340 25 1560 270 12-22 225
250 490 445 400 28 1960 300 12-22 275
400 540 495 400 28 2110 330 16-22 310
ZR941W-2(4) Electric Cut off Valve
Technical Parameters
Nominal pressure 0.2 MPa 0.4 MPa
Strength test pressure 0.3 MPa 0.6 MPa
Working temperature ≤400 ℃
Flow rate ＜20m /s
Medium Air, coal gas, fume etc.
Connecting flanges GB/T9119 standard
Leakage ratio 150XDN
Main Structure Dimension /Unit: mm
DN D D1 L B H H1 N- φd Electric actuator Power (KW) Weight (KG)
150 265 225 300 22 1350 190 8-17.5 ZA20-36 0.75 200
200 320 280 300 22 1410 220 8-17.5 ZA20-36 0.74 225
250 375 335 340 25 1630 250 12-17.5 ZA30-36 1.1 250
300 440 395 340 25 1790 270 12-22 ZA30-36 1.1 275
350 490 445 400 28 2050 300 12-22 ZA30-36 1.1 325
400 540 495 400 28 2260 330 16-22 ZA30-36 1.1 360
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