Little Giant Pump

[stevepelle91]

I've been looking at these for quite a while now and i am planning on buying one soon. Almost everyone i've talked to, uses their HC version, but not the SC version.


The HC Version:

Volute — Glass-filled Ryton
Backplate — Glass-filled Ryton
Impeller — Glass-filled Ryton w/ Carbon
Bushing
Shaft — Ceramic
Thrust Washers — Ceramic
O-Ring — Viton


The SC Version

Volute — Glass-filled Polypropylene
Housing — Glass-filled Polypropylene
Impeller — Glass-filled Polypropylene
Shaft — Ceramic
Thrust Washers — Ceramic
O-Ring - Nitrile (Buna - N)

The two differences would be Polypropylene vs Ryton, & Buna-N vs Viton. Now Polypro & Ryton both have excellent resistance against sulfuric acid, along with the Viton o-rings on the HC version. The only thing in either one that is susceptible to damage are the Buna-N o-rings on the SC version.

So basically could i not just buy the SC version & swap out brand new high quality Viton o-rings in the impeller housing? For the price difference of the two, it would be well worth the work, unless there is a much bigger problem i am not seeing. Your welcome to state your opinions on this matter, thanks!

Chemical Resistance Chart:
http://www.lgpc.com/MagDrive/CRC.pdf

HC Pumps:
http://www.lgpc.com/MagDrive/ByCateg...&CategoryID=19

SC Pumps:
http://www.lgpc.com/MagDrive/ByCateg...&CategoryID=18

[destroyer125]

Either will work, Buna N will last a good while with diluted sulfuric acid. If your that worried about it, find the oring Dash # used and buy a viton oring in that size.

[stevepelle91]

Thanks for the reply, gives me a huge relief. The price difference is like $150 for the same GPH.

[acidrain]

I don't know how you feel about ebay, but here's a killer deal:
LITTLE GIANT TE-5-MD-HC MAGNETIC DRIVE PUMP - 115/230V - eBay (item 230288450412 end time Sep-15-08 17:19:16 PDT)

[stevepelle91]

Heh i've had that one on watch for some time now, definitely going to bid on it. If that one fails, i will most likely go with a SC.