Bravo One water impeller
#21
Registered
The rubber impeller spinning in the housing lowers atmospheric pressure within the pump cavity and the pressure differential causes water to flow into the cavity. To be technical. Suction is completely different. I was actually awake during hydraulics 😂
The following 2 users liked this post by smokediver:
blownhammer2000 (05-19-2022), ThisIsLivin (05-16-2022)
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the deep (05-19-2022)
#23
This of course assumes that the impeller and housing are in good condition.
Also to answer the question about suction: Yes PD pumps do produce suction or a bravo style impeller would never see water.
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Wally (05-27-2022)
#24
The lines cannot be 'primed' unless you have some sort of bleed just before the inlet of the pump. An impeller pump is a PD pump or Positive displacement. The inlet is 'sealed' from the outlet so you cannot run water into the inlet due to the inlet being 'airlocked'.
This of course assumes that the impeller and housing are in good condition.
Also to answer the question about suction: Yes PD pumps do produce suction or a bravo style impeller would never see water.
This of course assumes that the impeller and housing are in good condition.
Also to answer the question about suction: Yes PD pumps do produce suction or a bravo style impeller would never see water.
__________________
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
#25
Actually...this whole conversation reminded me of something. About 20 some odd years ago when i started working for the pump company i'm at right now...we tested a merc seawater pump just to get an idea of our mag-drive system could be used on a rubber vein impeller style pump. If memory serves me well i think we either had a 1.5 or a 2hp electric single phase 220v motor hooked to it. It didn't have enough starting torque to get it moving from a dead stop! Once it was given some help by hand it took off. Those pumps can do some decent volume of liquid and they generate some impressive pressure! Again if my memory is correct it did somewhere in the neighborhood of about 85-90' of head height which translates to just under 40psi! Im not sure how good the impeller was in the pump we tested so a new impeller and new housing may generate even more pressures!
__________________
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
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SB (05-27-2022)
#26
Platinum Member
Platinum Member
iTrader: (2)
I don't often flush my boat. but when I do, I make it suck water out a hose in a dark alley.
https://southpark.cc.com/video-clips...-out-of-a-hose
https://southpark.cc.com/video-clips...-out-of-a-hose
Need to watch more South Park.