RE: High temperature butterfly valve

From: <Nashine>
Date: Thu Jan 08 2004 - 22:46:00 EST

You can use ASTM A515 Gr 80 for valve body ; which is carbon steel boiler quality plate for high temperature services. Same shall have water cooled jacket.
For trims use Inconel which is suited for such high temperature services

With best regards

Akash K. Nashine
SIEMENS
Siemens Power Engineering
INDIA
*Phone: +91 124 2842006
*Mail : << mailto:<a href="/group/PipingDesign/post?postID=U0wq38BKDCgalhVeCNWghdNGoiCzfFZOPPCKGF6JdlpbDdTnf3OUfE3YswB3jFJzMo_T2iRF6NKrwBb9KuY">A-K.Nashine@siemens.com</a> <mailto:<a href="/group/PipingDesign/post?postID=U0wq38BKDCgalhVeCNWghdNGoiCzfFZOPPCKGF6JdlpbDdTnf3OUfE3YswB3jFJzMo_T2iRF6NKrwBb9KuY">A-K.Nashine@siemens.com</a>>

-----Original Message-----
From: JIMÉNEZ L. Homero TAMSAVER [mailto:hjimenez@tamsa.com.mx] Sent: 08 January 2004 22:36
To: <a href="/group/PipingDesign/post?postID=qiaxhIwO4PMiDlNiapHsEPzQdiHPaX5ZDDpOJF7fa5XvQysGaj9d0SALUEsnZesBcJYKn5igrKgrAnzPJo09vlHaNEXo">PipingDesign@yahoogroups.com</a> Subject: [PipingDesign] High temperature butterfly valve

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

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[Non-text portions of this message have been removed] Received on Thu Jan 08 22:46:00 2004