How can gravity prime a pump..... - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > How can gravity prime a pump.....

Thread Tools
Old 07-23-2012, 12:49 PM   #1
skibumdc's Avatar
Oct 2008
Posts: 224
Liked 6 Times on 6 Posts

...with the inlet facing downward?
A friend of mine has the inlet facing the ceiling which made sense to me since liquid would flow directly into the pump.

March says to orient the pump with the inlet facing downwards, meaning liquid has to flow down from the Kettle/Tun/HLT then turn 180 degrees to get into the inlet to prime and them be pumped out.

This is right?

When priming , do y'all leave the outlet ball valve open or closed?

Reply With Quote
Old 07-23-2012, 12:57 PM   #2
Ale's What Cures You!
Yooper's Avatar
Jun 2006
UP of Michigan, Winter Texan
Posts: 70,034
Liked 8171 Times on 5696 Posts

Inlet should face down- as you "flood" the pump with fluid, the air bubble will rise up and out of the pump. This will prevent cavitation.

But I've also successfully placed my pumps horizontally and that worked well, and that is the way I have them currently. They are head down, mounted horizontally. I have few problems with priming.

I leave the outlet ball valve open, so that the air can come out.
Broken Leg Brewery
Giving beer a leg to stand on since 2006

Reply With Quote
Old 07-27-2012, 12:45 AM   #3
SavoryChef's Avatar
Feb 2012
Sparks, NV
Posts: 1,009
Liked 149 Times on 98 Posts

I didn't believe it until I tried it.
My Cellar

Untappd: Savorychef

Reply With Quote
Old 07-27-2012, 02:01 AM   #4
Dec 2009
Middle of the Mitten, Michigan
Posts: 807
Liked 33 Times on 31 Posts

doesn't matter how many ups and downs you have as long as they are below the top outlet and the air can get away, liquid will seek the lowest level eventually..
Reality is an illusion that occurs due to the lack of alcohol.
Give a man a beer, he'll drink for the day.Teach a man to brew, he'll be drunk the rest of his life.
I have 8 carboys, 8 cornies, 5-1 gal jugs, 200 wine bottles, 10 cases of beer bottles and a nice assortment of flip tops....My goal is to keep them at least 50% occupied

Reply With Quote
Old 07-27-2012, 02:19 AM   #5
Feb 2011
Richland, WA
Posts: 68
Liked 3 Times on 3 Posts

Liquid is like a snake... it seeks the path of least resistance, the weight of the liquid and gravity pushes the wort to the pump. As long as your pump and all lines are below the vessel you will have no problems getting flow.
Fermenting: Russian Imperial Oat Stout "Cosmonaut"
Bottled: Apfelwien, Holidaay Porter
Kegged: IPA, Holiday Porter
Coming Soon: Apfelwien, Holiday Porter

Reply With Quote
Old 07-27-2012, 02:55 AM   #6
Ryush806's Avatar
Sep 2010
Shreveport, Louisiana
Posts: 784
Liked 93 Times on 65 Posts

Yes leave the valve open but also make sure ALL valves in the line are open to allow any air to escape. Definitely make sure you don't have any relative high spots in the line because you can form an air lock. You shouldn't have any problems if you do both of those things.
Beer is proof that God loves us and wants us to be happy.
- Benjamin Franklin (and I don't care if this quote has been largely discredited/misquoted...I like it!)

Beer, if drank with moderation, softens the temper, cheers the spirit and promotes health.
- Thomas Jefferson

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pump losing prime? landon976 Equipment/Sanitation 4 12-22-2011 06:33 PM
March pump losing prime when running pump wide open rockytoptim Equipment/Sanitation 12 09-05-2011 01:42 AM
will this pump self prime? terrazza Equipment/Sanitation 4 12-23-2010 06:51 PM
March Pump losing prime shoebag22 Equipment/Sanitation 28 07-20-2010 12:23 PM
March Pump Prime awest74 Equipment/Sanitation 3 07-09-2007 05:05 PM

Forum Jump