High temperature butterfly valve

From: <JIMÉNEZ>
Date: Thu Jan 08 2004 - 12:06:00 EST

Which is be best material to built a 2000 mm diameter, butterfly valve?. The working conditions are:

Fluid: Electric arc furnace combustion gas

Pressure: 	 -15" H20
Temperature:      Average 650 Centigrades, peak 900 Centigrades

Gas velocity 40 m/sec

Application: Melt shop fume dedusting ductwork. The valve is used to control the internal pressure in our Electric

                         arc furnace

We tried a valve made in A 316 but it failed (severe deformation in the body and melting in the seals of the electronic positioner after working only 4 weeks. Would you advice to use a water cooled valve built in ASTM A 106 schedule 160 pipe?

Any commet is welcome Received on Thu Jan 08 12:06:00 2004