Hey guys,

Been reading here for about a year now and i want to thank all those who take the time to share their wealth of knowledge.

So, im building a GL/Appleseed and i came across 2-BELL & GOSSETT pumps series 100 and i'd like to get the skinny on these pumps.Will they work with this system? pros and cons please.

thank you, dw

HI hsolo,
I previously had a B&G ser.100 pump in my processor. It worked after I replaced the seals, but not that well. It would take awhile for it to get primed and forget about it pumping your oil in.
All that said I did use it to brew 4 100L batches that passed the 3/27 in about 2.5 hours. I had the pump plumbed in above the glycerin level in the pipe work.

If your planning to do a push/pull I would look for a bigger pump...
Your millage may vary!
Jon

B&G 100s are good pumps but normally they are used in a low head closed loop like a hydronic heating system. They wouldn't be your first choice if you were buying new pumps, however two pumps in hand are worth more than the best pump on your wish list.

Connect the two B&G 100s in parallel with check valves on the outputs. For hard pumping with cold oil run both, for warm oil circulation and transferring, one pump will be enough. They will stay primed if they're at the low point in the system. This is how most heating systems are plumbed for flexibility, back-up, and reliability.

quote:

Originally posted by Jon Heron:
HI hsolo,
I previously had a B&G ser.100 pump in my processor. It worked after I replaced the seals, but not that well. It would take awhile for it to get primed and forget about it pumping your oil in.
All that said I did use it to brew 4 100L batches that passed the 3/27 in about 2.5 hours. I had the pump plumbed in above the glycerin level in the pipe work.

If your planning to do a push/pull I would look for a bigger pump...
Your millage may vary!
Jon

I have the Taco equivalent and, although I haven't hooked it up yet, I will say unequivocally that they are NOT self priming - centrifugal pumps just won't do it.

Also, these pumps come in a bunch of different sizes. Mine is rated at 12' of head @ 0 flow, but about 50 gmp at near atmospheric, which will turn over my tank in under 2 minutes.

I have a B&G pump model 60. This a bigger than the model 100. It does a good job but not as big I thought it would be. I was hoping for 85 gallons a minute and it ended up at about 65-70 gpm. Still not bad for an 80.00 dollar pump to my front door.

I had friend who put a 3600 rmp motor in an older Taco pump (I don't think you can do this the newer ones) and it rocked.

Thanks for all the replies

Now for some follow up questions,


1) Do the circulation pumps ( b&g,taco,grundfos) prime the same as the NT or HF if placed at or below the bottom of the processor?

2) If you could choose between a nt/hf pump or a taco/grundfos pump to use on a GL 1 day/appleseed, which would you choose and why?

3) Would there be any problems using a gly pretreatment with a taco/grundfos pump?



thanks,dw

1) yes
3) they're commonly used to circulate hot glycol solutions

Hey dw,

1.) Yes

2.) I use a Grundfos and a Taco, quality wise there is no contest. Pumping capability again no contest.

3.) Should work fine.

One thing I will say about the Taco is that the impeller is fixed to the shaft with a friction ring. It WILL slip in hot oil so you will need a way of modifying that. I have used a set screw on one and works well. The larger pumps of this type have a closed impeller so will require occasional cleaning of the impeller for best performance.


Tony

You may also want to look into the Wilo circ pumps. GL now swears by them and there is even a promotion going on write now in my area at the Wolseley plumbing supply, Buy 3 get one free!
www.wilo-canada.com

Jon

quote:

Originally posted by tgomes:

One thing I will say about the Taco is that the impeller is fixed to the shaft with a friction ring. It WILL slip in hot oil so you will need a way of modifying that. I have used a set screw on one and works well. The larger pumps of this type have a closed impeller so will require occasional cleaning of the impeller for best performance.


Tony

Was the slipping impeller with the cartridge pumps? The Taco and B&G in question are an old school design - separate motor, coupling, shaft, seal, impeller. The one I will be using is probably 50 years old and comes out of my parent's old oil HW system - 190F water, all day long, for months on end.

Yes,

This was with the cartrige pumps. The 3 piece style doesn't have this design or problem. The cartrige pumps work great with water as is. It is only with hot oil that this is an issue.

Tony

Hi all,


does anyone have experience with the grundfos ups43-44fc 3 speed ?

also


what is the difference between a closed system and a open system pump? can the open system version be used in our application?



thanks dw

quote:

Originally posted by hsolo:
does anyone have experience with the grundfos ups43-44fc 3 speed ?

yes