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High Temperature Hot Blast Valve

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Qinhuangdao Yutian Science and Technology Co.,Ltd
[China]

Address
No.16 West Heilongjiang Road, Economy and Technology  Qinghuangdao Hebei
Phone
86-0335-8015982
Contact name
sofina lee

Quick Information

  • Place of Origin: China

Description

Specification DN500-1500
Application suitable for branch hot blast pipes of the hot blast furnace system, working as hot blast valve, back-draft valve and combustion valve etc
Model QYTR744R,QYTR944R
 

 

The round water channel lining high temperature hot blast valve designed and manufactured by YuTian is classified into 2 models: QYTR744R and QYTR944R.

  • Driving modes: hydraulic driving and electric driving
  • Welded structure, round shape water cooled channel is designed at the sealing surface. The valve body and valve disc are water cooled.
  • A floating seal device connects the stem and the bonnet of the valve.
  • Medium pressure difference ensures the valve seal completely. Valve has to be open/closed after pressure equalization.
  • The main material is Q235, 20g, 1Cr18Ni9Ti and the special heat-resistant alloy steel.

Parameters

  • Nominal Diameter: 1100~1500
  • Working Pressure: 0.4MPa
  • On-and-Off Pressure Difference: ≤0.01
  • Temperature Requirement: DN1100_1200: ≤1350℃                DN1300~1500: ≤1450℃
  • Medium Requirement: high temperature air, smoke and combustion gas

 

 

Conditions for cooling:

  1. The pressure requirement of the cooling water ranges from 0.4 to 0.6MPa. Valve of small size is applied to the min. pressure, while valve of big size is applied to the max. pressure. The cooling water volume depends on the blast temperature and the local air temperature.
  2. The valve is cooled by the industrial cycled water. The temperature difference of inlet and outlet water is below 12℃. This valve needs to be prevented frostbite when not working.
  3. Water shortage and cutoff is strictly banned in the water-cooling channel. A water-supply system is needed. This valve needs to be prevented frostbite s when not working.

 

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