Material of Construction for Pumping Sulphuric Acid at 98% Concentration

for small volumes I would consider a vinyl transparent hose pump. Easy to maintain and to check. If maintenance is needed, just replace the hose.

For higher volumes you might think of a separate pump house and rotor in plastic of PTFE with a magnetic coupling to a motor. Some models work without shaft.

For the big work try to get a ceramic one.

Thanks for prompt reply.

The flow rate is around 350lph and head requirement is 24 mts water column

pneumatic pressure can also be used for batch pumping. better the air is dry.

other options is CI pumps.

Not vinyl! Severe effect!

http://www.coleparmer.com/techinfo/chemcomp.asp

Select "PVC" on the left and "Sulfuric acid, 75-100%" on the right to see.

The temperature is ambient ie around 35 to 40 deg.C.As suggested mag-drive pumps seem to be ideal as seal problems can be avoided.

Further would like to know the indian suppliers.

Iwaki MDT series should be just right. I don't kinow if they have distributors in India, you'll have to look it up:

http://www.iwakipumps.jp/e_products/e_cascade/e_mdt.html

You could try these folks:

http://www.peerlesspump.com/fire_pumps_appnews07.aspx

Are you referring to the seal of the vessel (I assume agitated) for the acid or the pumps? If you are referring to the vessel agitator seal, then unless you are working at high temperatures, you may use a single mechanical seal, sulphuric acid has relatively low vapor pressure, so it should be fine unless you are working in a very humid atmosphere.

It is good to use AODD pump u should first confirm the material of construction of the pump. it must be anti corrosive such as PTFE. and use FRL for air in line.