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WENZHOU YONGIDE VALVE CO.,Ltd.
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D771H clip-on liquid to move the butterfly valve
Mainly used in turbine exhaust pipe, the residual pressure power generation device (TRT) in the blast furnace gas high level of security systems, and media for water, sewage, smoke, air, oil and other industrial pipe-line for emergency shut-off valve.
The valve is widely used in metallurgical industry, blast furnace gas pipe network system, to prevent the gas tube tempering; in the power industry in order to prevent the steam turbine unit load rejection, the sudden drop in pressure within the turbine, the exhaust pipe and the heater inside the steam into the turbine within caused by the turbine blade smashed serious accident, damage to the turbine generator for emergency shut-off valve with this. To implement the emergency shut valve system dangerous working conditions in 0.5 seconds, the reliable cut-off of the pipe. Effectively prevent the end of the turbine steam and condensed water intrusion, to protect the safety of the Steam Turbine.
 
 
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The D743H fluid control triple eccentric metal sealing butterfly valve
Performance description
  The butterfly valve body of homogeneous material into the ring, hydraulic way.
  Generally applicable to industrial, utilities, environmental protection and other piping.
  Standard
  Flange connecting dimensions: GB4216.4;
  The length of the structure: to GB12221-89
  Pressure Test: GB44981-85;
  
The main technical parameters
Nominal diameter DN (mm) 1000 ~ 3200
Nominal pressure PN (MPa) 0.6 1.0 1.6
Test pressure PS (MPa) strength test 0.9 1.5 2.4
  
Applicable to the media water, air, steam, oil, etc.
Suitable temperature -40 ~ 600

Main parts and materials
Name Materials
Body gray iron, ductile iron, carbon steel, stainless steel, chrome-nickel, molybdenum and titanium steel.
Valve plate gray iron, ductile iron, carbon steel, stainless steel, chrome-nickel, molybdenum and titanium steel.
Valve rod of stainless steel, 2Cr13, chrome-nickel, molybdenum and titanium steel
Body seal copper alloy, stainless steel
Valve plate seal NBR oil resistant rubber, stainless steel

Mounting dimensions
Diameter (DN) of L, D1, D, z-d H H0 A, B, Wt / Kgs
1000723110140 4-14 70 215 270 65 9
1200868130160 4-14 80 235 270 65 12
14,001,000,150,190 4-18 95 263 270 65 15
16,001,130,170,210 4-18 105 283 270 65 17
18,001,260,200,240 8-18 120 313 310 65 23
20,001,380,225,265 8-18 132.5 3383106525
22,001,550,280,320 8-18 160 493 365 90 42
24,001,710,335,375 12-18 187.5 550 365 90 60
26,001,800,395,440 12-22 220 615 365 90 80
28,001,870,445,490 12-22 245 678 365 90 100
30,001,970,495,540 16-22 270 727 365 90 120
32,002,100,550,595 16-22 297.5 782 365 90 160
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