I needs meself a new pump.
What’s the difference between a 4 stage pump such as this one here and a 5 stage pump such as this one here
What is a “stage”?
And are they different to twin impeller pumps?
Woodie said:
I needs meself a new pump.What’s the difference between a 4 stage pump such as this one here and a 5 stage pump such as this one here
What is a “stage”?
And are they different to twin impeller pumps?
What is a multistage pump?
A pump that contains different stages within the piping system where force is applied to the water. Each stage consists of one impeller as well as its accompanying diffusion components. The term “multistage” is usually used in reference to centrifugal pumps.
In many cases, these pumps are referred to in terms of how many stages they contain. For example, a pump with four stages might be referred to as a four-stage pump, or one with 10 stages would be referred to as a ten-stage pump.
How do multi-stage pumps work?
The idea behind multistage pumps is fairly simple. In many industrial and fluid treatment facilities, it’s necessary for fluids to be moved large distances with higher pressure. In many of these situations, the only way to achieve this higher pressure is with more than one impeller. The multiple impellers are mounted on the same shaft, and the flow progresses from one stage to another, building pressure as it goes.
http://www.pumpscout.com/all-pump-types/multistage-pumps-ptid96.html
Depending on what flow rate you are after the best pump for transferring water around if it doesn’t have to instantaneous is the helical solar pump.
They don’t need an inverter and will use whatever power is available from the solar panels to pump, they don’t need a battery.
Helical pumps also can lift to large heads but the rate is not great..
They are really simple, apparently.
When the poled a studio audience 9 out of ten said they would use a helical solar pump.
Here’ one.
https://www.ebay.com.au/itm/400W-Solar-Submersible-Bore-Pump-Water-Supply-MPPT-Controller-Irrigation-Farming/202618310013?hash=item2f2cfe0d7d:g:i8MAAOSwqUBcd323
probably what boris said
same applies in jet engines, in some regards, i’d imagine
few other examples of multistage pumps, the idea..
you could argue a regular multi-piston engine is a multi-stage pump, various gas flows are optimized, for whatever.
the regular two-stroke using the piston downward stroke and crankcase pressure, along with combustion etc is a multistage pump.
then there are multistage superchargers or turbo-supercharger combinations, that sort of thing on high performance engines, and you can consider the engine part of the pump system.
a simple old train compressor might be a three cylinder multistage pump, two into one with a cooling radiator between, as recall (made one into a sandblaster compressor, worked well).
actually something of multistage pumps reminds me of impedance matching, or impedance transformation in electronics.
Are you replacing the household water pump, or is it for another purpose?
Ya see……… the current house pressure pump has sort gone kaput. It was coming on every minute or two. So I pulled it apart. One of the twin impellers was busted. It’s been making a racket for months. broken off it’s shaft. Managed to source a second hand impeller (don’t make them any more as the pump’s about 30 years old at least).
Anyhoo…… ummm.. some….. um….. sorta ummm……….. water went inside the motor……. and umm… probably buggered it. It’d trip the circuit breaker when I turned the motor on. Turned it upside down and drained the water, but it now needs a bit of a hand turn to get it to turn/start, doesn’t run as fast, and boy oh boy…. does the casing get hot. Gave it a bit of a squirt inside the motor with some CRC and have left it upside down to ummmm……….. drain and dry out.
Gunna put the whole thing back together tomorrow and see if it goes. Otherwise it a new pressure pump for Le Cosy Comfort Country Cottage le Chateau Mummulgum.
Hence the “4 or 5 stage pump” or ordinary twin impeller thingy type such as this one
Woodie said:
Ya see……… the current house pressure pump has sort gone kaput. It was coming on every minute or two. So I pulled it apart. One of the twin impellers was busted. It’s been making a racket for months. broken off it’s shaft. Managed to source a second hand impeller (don’t make them any more as the pump’s about 30 years old at least).Anyhoo…… ummm.. some….. um….. sorta ummm……….. water went inside the motor……. and umm… probably buggered it. It’d trip the circuit breaker when I turned the motor on. Turned it upside down and drained the water, but it now needs a bit of a hand turn to get it to turn/start, doesn’t run as fast, and boy oh boy…. does the casing get hot. Gave it a bit of a squirt inside the motor with some CRC and have left it upside down to ummmm……….. drain and dry out.
Gunna put the whole thing back together tomorrow and see if it goes. Otherwise it a new pressure pump for Le Cosy Comfort Country Cottage le Chateau Mummulgum.
Hence the “4 or 5 stage pump” or ordinary twin impeller thingy type such as this one
I’d replace your pump with something virtually identical, so you get the same performance as yours originally had.
Michael V said:
Woodie said:
Ya see……… the current house pressure pump has sort gone kaput. It was coming on every minute or two. So I pulled it apart. One of the twin impellers was busted. It’s been making a racket for months. broken off it’s shaft. Managed to source a second hand impeller (don’t make them any more as the pump’s about 30 years old at least).Anyhoo…… ummm.. some….. um….. sorta ummm……….. water went inside the motor……. and umm… probably buggered it. It’d trip the circuit breaker when I turned the motor on. Turned it upside down and drained the water, but it now needs a bit of a hand turn to get it to turn/start, doesn’t run as fast, and boy oh boy…. does the casing get hot. Gave it a bit of a squirt inside the motor with some CRC and have left it upside down to ummmm……….. drain and dry out.
Gunna put the whole thing back together tomorrow and see if it goes. Otherwise it a new pressure pump for Le Cosy Comfort Country Cottage le Chateau Mummulgum.
Hence the “4 or 5 stage pump” or ordinary twin impeller thingy type such as this one
I’d replace your pump with something virtually identical, so you get the same performance as yours originally had.
+1
Michael V said:
I’d replace your pump with something virtually identical, so you get the same performance as yours originally had.
Trouble is, I dunno what the specs of the current pump are.
Woodie said:
Michael V said:I’d replace your pump with something virtually identical, so you get the same performance as yours originally had.
Trouble is, I dunno what the specs of the current pump are.
The original is a Davey and looks a bit like this one , motor looks the same, and has exactly the same pressure regulator. Check out the price, but. EEEEEK!
Woodie said:
Woodie said:
Michael V said:I’d replace your pump with something virtually identical, so you get the same performance as yours originally had.
Trouble is, I dunno what the specs of the current pump are.
The original is a Davey and looks a bit like this one , motor looks the same, and has exactly the same pressure regulator. Check out the price, but. EEEEEK!
I see what you mean.
Michael V said:
Woodie said:
Woodie said:Trouble is, I dunno what the specs of the current pump are.
The original is a Davey and looks a bit like this one , motor looks the same, and has exactly the same pressure regulator. Check out the price, but. EEEEEK!
I see what you mean.
Pretty cheap, considering if it’s like mine you get 20 years plus work out of it without any maintenance at all.
I’ve had two pumps over the last few years and what pieces of crap they were they both have lucky to have been operated 50 times if that and died, one was a Davey the other Orange both oursourced to China for manufacture but kept the name so you think they are made somewhere with quality control.
Okays. Now for all you pumpophobes (or is it pumpophiles) out there in webernettyland.
What’s the diff between this one at $125 and this one at $425, besides the price?
I note the $125 one has many listings on Ebay (15+) at around $195, but just the one listing at $125.
The $125 one seems much better specced than the $425 one. Or am i dreamin’?
Woodie said:
Okays. Now for all you pumpophobes (or is it pumpophiles) out there in webernettyland.What’s the diff between this one at $125 and this one at $425, besides the price?
I note the $125 one has many listings on Ebay (15+) at around $195, but just the one listing at $125.
The $125 one seems much better specced than the $425 one. Or am i dreamin’?
Wait, what?
The cheap one, that’s using 2,000W to move 120L/min sounds horrifically inefficient.
Rule 303 said:
Woodie said:
Okays. Now for all you pumpophobes (or is it pumpophiles) out there in webernettyland.What’s the diff between this one at $125 and this one at $425, besides the price?
I note the $125 one has many listings on Ebay (15+) at around $195, but just the one listing at $125.
The $125 one seems much better specced than the $425 one. Or am i dreamin’?
- Suction height: 9m
Wait, what?
The Davey has a suction height of 6 metres. Anyway, I have no suction height. The pump will be at the same level as the base of the tank
Woodie said:
Rule 303 said:
Woodie said:
Okays. Now for all you pumpophobes (or is it pumpophiles) out there in webernettyland.What’s the diff between this one at $125 and this one at $425, besides the price?
I note the $125 one has many listings on Ebay (15+) at around $195, but just the one listing at $125.
The $125 one seems much better specced than the $425 one. Or am i dreamin’?
- Suction height: 9m
Wait, what?
The Davey has a suction height of 6 metres. Anyway, I have no suction height. The pump will be at the same level as the base of the tank
Look for whichever sucks harder I suppose …
Woodie said:
Rule 303 said:
Woodie said:
Okays. Now for all you pumpophobes (or is it pumpophiles) out there in webernettyland.What’s the diff between this one at $125 and this one at $425, besides the price?
I note the $125 one has many listings on Ebay (15+) at around $195, but just the one listing at $125.
The $125 one seems much better specced than the $425 one. Or am i dreamin’?
- Suction height: 9m
Wait, what?
The Davey has a suction height of 6 metres. Anyway, I have no suction height. The pump will be at the same level as the base of the tank
Also, for the cheap one…i like those odds
“Seller information
ma_60907 (0 )
50% Positive feedback”
Rule 303 said:
The cheap one, that’s using 2,000W to move 120L/min sounds horrifically inefficient.
The Davey is 550W for 70 L/min. Max head 33 metres. The other has a max head of 51 metres. Not that I need head like that.
And that $425 price for the Davey is for a “new”, but never used one. Average proper new price seems to be about $550 on Ebay for the Davey.
poikilotherm said:
Woodie said:
Rule 303 said:
- Suction height: 9m
Wait, what?
The Davey has a suction height of 6 metres. Anyway, I have no suction height. The pump will be at the same level as the base of the tank
Look for whichever sucks harder I suppose …
The harder the suck, the better head you get, I suppose.
Woodie said:
Rule 303 said:
The cheap one, that’s using 2,000W to move 120L/min sounds horrifically inefficient.
The Davey is 550W for 70 L/min. Max head 33 metres. The other has a max head of 51 metres. Not that I need head like that.
And that $425 price for the Davey is for a “new”, but never used one. Average proper new price seems to be about $550 on Ebay for the Davey.
I had a Davey Silver Series pump and it was very poor quality.
It was meant to pump water from water tanks through a pipe onto dripper hoses in vegetable beds, it died after hardly any use and it wasn’t exactly doing much in the first place
Woodie said:
poikilotherm said:
Woodie said:The Davey has a suction height of 6 metres. Anyway, I have no suction height. The pump will be at the same level as the base of the tank
Look for whichever sucks harder I suppose …
The harder the suck, the better head you get, I suppose.
That possibly has a double meaning
You could ring Geoff and Sabina and ask about pumps? As long as you know what you want it to do. They freight all over Australia. Mostly Millers Falls stuff.
https://motors50.com/
Woodie said:
Woodie said:
Michael V said:I’d replace your pump with something virtually identical, so you get the same performance as yours originally had.
Trouble is, I dunno what the specs of the current pump are.
The original is a Davey and looks a bit like this one , motor looks the same, and has exactly the same pressure regulator. Check out the price, but. EEEEEK!
single stage centrifugal pump. ~$550 with the electronic pressure switch. well, mine was.
thinking about early pumps, you had a good size motor, maybe single impeller with a wide clearance, + airbag, with pressure switches.
the motor ran full speed (when operating) regardless of flow. The off and on was a pain in the arse, noisy and and if the airbag was flat or not inflated properly they’d on and off rapidly at low flows.
they seem to have added more impellers, multistage, I gather with tighter clearances, + triac or whatever speed controller.
lot more efficient, and quieter.
Well, that’s it then. The Board of Directors of Le Cosy Comfort Country Cottage le Chateau Mummulgum has met and funds have been allocated from the extraordinary expense budget for a new pump.
The motion was raised, seconded, and “The current one is buggered”, was noted in the minutes. “The stupid goose Maintenance Manager (aka Mr Woodie) let water get in the motor” it was also noted.
The Maintenance Manager’s employment will be terminated forthwith. This motion was carried unanimously.
In his defence, the Maintenance Manager noted that the pump now runs much quieter due to the replaced impeller, but grinds to a halt as pressure in the system builds. It also needs a bit of a helping hand to turn over when power is first applied. “In other words, it’s stuffed” he quoted.
Woodie said:
Well, that’s it then. The Board of Directors of Le Cosy Comfort Country Cottage le Chateau Mummulgum has met and funds have been allocated from the extraordinary expense budget for a new pump.The motion was raised, seconded, and “The current one is buggered”, was noted in the minutes. “The stupid goose Maintenance Manager (aka Mr Woodie) let water get in the motor” it was also noted.
The Maintenance Manager’s employment will be terminated forthwith. This motion was carried unanimously.
In his defence, the Maintenance Manager noted that the pump now runs much quieter due to the replaced impeller, but grinds to a halt as pressure in the system builds. It also needs a bit of a helping hand to turn over when power is first applied. “In other words, it’s stuffed” he quoted.
These machines run very quietly indeed when they’re not working.
Woodie said:
Well, that’s it then. The Board of Directors of Le Cosy Comfort Country Cottage le Chateau Mummulgum has met and funds have been allocated from the extraordinary expense budget for a new pump.The motion was raised, seconded, and “The current one is buggered”, was noted in the minutes. “The stupid goose Maintenance Manager (aka Mr Woodie) let water get in the motor” it was also noted.
The Maintenance Manager’s employment will be terminated forthwith. This motion was carried unanimously.
In his defence, the Maintenance Manager noted that the pump now runs much quieter due to the replaced impeller, but grinds to a halt as pressure in the system builds. It also needs a bit of a helping hand to turn over when power is first applied. “In other words, it’s stuffed” he quoted.
Bunnings have them. Around 150 dorrah.
Bubblecar said:
Woodie said:
Well, that’s it then. The Board of Directors of Le Cosy Comfort Country Cottage le Chateau Mummulgum has met and funds have been allocated from the extraordinary expense budget for a new pump.The motion was raised, seconded, and “The current one is buggered”, was noted in the minutes. “The stupid goose Maintenance Manager (aka Mr Woodie) let water get in the motor” it was also noted.
The Maintenance Manager’s employment will be terminated forthwith. This motion was carried unanimously.
In his defence, the Maintenance Manager noted that the pump now runs much quieter due to the replaced impeller, but grinds to a halt as pressure in the system builds. It also needs a bit of a helping hand to turn over when power is first applied. “In other words, it’s stuffed” he quoted.
These machines run very quietly indeed when they’re not working.
Peak Warming Man said:
Bunnings have them. Around 150 dorrah.
There’s this Bunnings one for $159 420W 1900 l/ph
Or this one on Ebay $169 2000W 7200 l/ph
Note exactly the same pressure/switch/regulator
Or this one. same price ($169), same pump, same mob on Ebay. With a different pressure/regulator/switch. It’s got a dial/gauge on it. 😮
This one, you’ll be able to have a shower while someone is washing the car.
Woodie said:
Or this one. same price ($169), same pump, same mob on Ebay. With a different pressure/regulator/switch. It’s got a dial/gauge on it. 😮
Bloody hell, it’s got a copper motor.
Looks fabby for the garden. Not much good for the kitchen sink, but.
So yas reckon it’s eenie meenie for the pressure/regulator/switch?
Woodie said:
So yas reckon it’s eenie meenie for the pressure/regulator/switch?
Is this question still in the committee stage?
How much water do you need to lift, how far, and how long have you got?
Rule 303 said:
Woodie said:
So yas reckon it’s eenie meenie for the pressure/regulator/switch?
Is this question still in the committee stage?
How much water do you need to lift, how far, and how long have you got?
No lift at all. Pump is at the base level of the tank. Head? To the roof for the solar hot water. I like good pressure, so you can flush the dunny when you’re in the shower, and then the washing machine kicks in.
Rule 303 said:
Is this question still in the committee stage?
The Financial Controller is about to click “buy now” on Ebay.
Woodie said:
Rule 303 said:
Woodie said:
So yas reckon it’s eenie meenie for the pressure/regulator/switch?
Is this question still in the committee stage?
How much water do you need to lift, how far, and how long have you got?
No lift at all. Pump is at the base level of the tank. Head? To the roof for the solar hot water. I like good pressure, so you can flush the dunny when you’re in the shower, and then the washing machine kicks in.
All pumps do is lift water, my friend. In engineering terms, they are correctly known as a water lifting device. ;-)
What you’re looking for is volume, not pressure. Running three taps at once will need at least 30L/min. to deliver reasonable performance (from the user’s PoV) – So any of the pumps you’re looking at will do.
I would be asking questions about warranty and availability of parts and such.
Executive decisions have been made. The domey black pressure/switch thingy. The outlet is at the side. They yellow one is at the top.
Further forensic examination shows the outlet on the domey/black one is at the side and should just plug onto the house copper piping. Otherwise, its a bendy/angle/make up joining plumbing bits stuff.
“Buy it now” has been clicked.
FIGJAM!
Goes just like a bought one it does. Takes a while to come on, but there’s an adjusto thing on it to do some muckin’ with.
Woodie said:
FIGJAM!Goes just like a bought one it does. Takes a while to come on, but there’s an adjusto thing on it to do some muckin’ with.
DONT TOUCH IT.
Peak Warming Man said:
Woodie said:
FIGJAM!Goes just like a bought one it does. Takes a while to come on, but there’s an adjusto thing on it to do some muckin’ with.
DONT TOUCH IT.
But but but but……………… Hot water comes out the cold tap.
Woodie said:
Peak Warming Man said:
Woodie said:
FIGJAM!Goes just like a bought one it does. Takes a while to come on, but there’s an adjusto thing on it to do some muckin’ with.
DONT TOUCH IT.
But but but but……………… Hot water comes out the cold tap.
change the little coloured thingies on the handle of the taps over.
JudgeMental said:
Woodie said:
Peak Warming Man said:DONT TOUCH IT.
But but but but……………… Hot water comes out the cold tap.
change the little coloured thingies on the handle of the taps over.
LOL
JudgeMental said:
Woodie said:
Peak Warming Man said:DONT TOUCH IT.
But but but but……………… Hot water comes out the cold tap.
change the little coloured thingies on the handle of the taps over.
But but but but…….. hot water comes out the hot tap too. It’s only just initially on the cold. So hot is flowing back from the hot water somehow. Also it takes a good 15+ sec to kick in, however there’s good pressure for that 15 or so secs. So I’ve no idea where the “backpressure” is coming from, to give a good bathroom basin full, before the pump kicks in.
I think there may be an airlock on the hot water tank on the roof. A lot of water, (hot water) backdrained out of the system when I took the old pump off.
Woodie said:
JudgeMental said:
Woodie said:But but but but……………… Hot water comes out the cold tap.
change the little coloured thingies on the handle of the taps over.
But but but but…….. hot water comes out the hot tap too. It’s only just initially on the cold. So hot is flowing back from the hot water somehow. Also it takes a good 15+ sec to kick in, however there’s good pressure for that 15 or so secs. So I’ve no idea where the “backpressure” is coming from, to give a good bathroom basin full, before the pump kicks in.
I think there may be an airlock on the hot water tank on the roof. A lot of water, (hot water) backdrained out of the system when I took the old pump off.
Ya see…… this is my theory.
There’s air in the system somewhere. Proberlee the hot water tank. And when the pump comes on, it stays on for a 5 – 7 sec after you turn the tap off (as it should) to build pressure in the system again. And it’s compressing the air in the system (tank) a bit, and when you turn the tap on, the compressed air provides a bit of pressure for a while, and then the pump kicks in.
Wadda yous ex spurts reckon?
Woodie said:
Woodie said:
JudgeMental said:change the little coloured thingies on the handle of the taps over.
But but but but…….. hot water comes out the hot tap too. It’s only just initially on the cold. So hot is flowing back from the hot water somehow. Also it takes a good 15+ sec to kick in, however there’s good pressure for that 15 or so secs. So I’ve no idea where the “backpressure” is coming from, to give a good bathroom basin full, before the pump kicks in.
I think there may be an airlock on the hot water tank on the roof. A lot of water, (hot water) backdrained out of the system when I took the old pump off.
Ya see…… this is my theory.
There’s air in the system somewhere. Proberlee the hot water tank. And when the pump comes on, it stays on for a 5 – 7 sec after you turn the tap off (as it should) to build pressure in the system again. And it’s compressing the air in the system (tank) a bit, and when you turn the tap on, the compressed air provides a bit of pressure for a while, and then the pump kicks in.
Wadda yous ex spurts reckon?
Has the new pump got a big pressure damper little tank thingy on it?
Peak Warming Man said:
Woodie said:
Woodie said:But but but but…….. hot water comes out the hot tap too. It’s only just initially on the cold. So hot is flowing back from the hot water somehow. Also it takes a good 15+ sec to kick in, however there’s good pressure for that 15 or so secs. So I’ve no idea where the “backpressure” is coming from, to give a good bathroom basin full, before the pump kicks in.
I think there may be an airlock on the hot water tank on the roof. A lot of water, (hot water) backdrained out of the system when I took the old pump off.
Ya see…… this is my theory.
There’s air in the system somewhere. Proberlee the hot water tank. And when the pump comes on, it stays on for a 5 – 7 sec after you turn the tap off (as it should) to build pressure in the system again. And it’s compressing the air in the system (tank) a bit, and when you turn the tap on, the compressed air provides a bit of pressure for a while, and then the pump kicks in.
Wadda yous ex spurts reckon?
Has the new pump got a big pressure damper little tank thingy on it?
Nope. A pitchered up earlier.
Woodie said:
Peak Warming Man said:
Woodie said:Ya see…… this is my theory.
There’s air in the system somewhere. Proberlee the hot water tank. And when the pump comes on, it stays on for a 5 – 7 sec after you turn the tap off (as it should) to build pressure in the system again. And it’s compressing the air in the system (tank) a bit, and when you turn the tap on, the compressed air provides a bit of pressure for a while, and then the pump kicks in.
Wadda yous ex spurts reckon?
Has the new pump got a big pressure damper little tank thingy on it?
Nope. A pitchered up earlier.
….. and as you can see, the doo dad on the top is about the size of a tea cup. Yet, (just retested) I get about 2/3 of a bathroom basin full, at a reasonable pressure (bout the same as the old pump,mayvbe a bit less) before the pump kicks in. And I tells ya what… when it kicks in…. phwooooooor.
Woodie said:
Woodie said:
Peak Warming Man said:Has the new pump got a big pressure damper little tank thingy on it?
Nope. A pitchered up earlier.
….. and as you can see, the doo dad on the top is about the size of a tea cup. Yet, (just retested) I get about 2/3 of a bathroom basin full, at a reasonable pressure (bout the same as the old pump,mayvbe a bit less) before the pump kicks in. And I tells ya what… when it kicks in…. phwooooooor.
dial it back dial it back
Woodie said:
Woodie said:
Peak Warming Man said:Has the new pump got a big pressure damper little tank thingy on it?
Nope. A pitchered up earlier.
….. and as you can see, the doo dad on the top is about the size of a tea cup. Yet, (just retested) I get about 2/3 of a bathroom basin full, at a reasonable pressure (bout the same as the old pump,mayvbe a bit less) before the pump kicks in. And I tells ya what… when it kicks in…. phwooooooor.
sounds like it is way too powerful for a domestic application, you likely need a pressure regulator in the line after the pump.
How much is 4.5 bar of pressure? Cause that’s what the little gauge says.
Woodie said:
How much is 4.5 bar of pressure? Cause that’s what the little gauge says.
4.5x atmosphere.
Woodie said:
How much is 4.5 bar of pressure? Cause that’s what the little gauge says.
65psi.
D’ya remember how I was saying you want volume, not pressure? The pump’s ability to deliver litres per minute is going to be a lot more important, unless you’re waaaayy up hill from it.
Woodie said:
How much is 4.5 bar of pressure? Cause that’s what the little gauge says.
that is 65.267 psi which way too high. pressure in a domestic setting should be less than half that amount
JudgeMental said:
Woodie said:
How much is 4.5 bar of pressure? Cause that’s what the little gauge says.
4.5x atmosphere.
Would that be enough to compress any air in the system, in support of my “theory”?
Rule 303 said:
Woodie said:
How much is 4.5 bar of pressure? Cause that’s what the little gauge says.
65psi.
D’ya remember how I was saying you want volume, not pressure? The pump’s ability to deliver litres per minute is going to be a lot more important, unless you’re waaaayy up hill from it.
It delivers, Mr 303. It delivers. And I“m about 2 metres from the pump. It’s outside the kitchen window.
Woodie said:
JudgeMental said:
Woodie said:
How much is 4.5 bar of pressure? Cause that’s what the little gauge says.
4.5x atmosphere.
Would that be enough to compress any air in the system, in support of my “theory”?
would think your pressure would quickly force any air out.
Woodie said:
Rule 303 said:
Woodie said:
How much is 4.5 bar of pressure? Cause that’s what the little gauge says.
65psi.
D’ya remember how I was saying you want volume, not pressure? The pump’s ability to deliver litres per minute is going to be a lot more important, unless you’re waaaayy up hill from it.
It delivers, Mr 303. It delivers. And I“m about 2 metres from the pump. It’s outside the kitchen window.
7,200 l/hr it delivers.
PermeateFree said:
Woodie said:
JudgeMental said:4.5x atmosphere.
Would that be enough to compress any air in the system, in support of my “theory”?
would think your pressure would quickly force any air out.
I don’t think there’s any in the system (pipes), per se. I think it’s in the solar hot water tank on the roof. It has a bleed valve on it, so I’ll climb up there tomorrow and bleed it.
Woodie said:
Woodie said:
Rule 303 said:65psi.
D’ya remember how I was saying you want volume, not pressure? The pump’s ability to deliver litres per minute is going to be a lot more important, unless you’re waaaayy up hill from it.
It delivers, Mr 303. It delivers. And I“m about 2 metres from the pump. It’s outside the kitchen window.
7,200 l/hr it delivers.
https://www.engineeringtoolbox.com/hydrostatic-pressure-water-d_1632.html
gravity fed systems, from a tank on a stand are usually 4m+height of tank when full, so about 6 metre. Your pressure is for a 50m head. Lots.
Woodie said:
PermeateFree said:
Woodie said:Would that be enough to compress any air in the system, in support of my “theory”?
would think your pressure would quickly force any air out.
I don’t think there’s any in the system (pipes), per se. I think it’s in the solar hot water tank on the roof. It has a bleed valve on it, so I’ll climb up there tomorrow and bleed it.
If that is not the problem, adjust the pressure output to 2 Bar
Woodie said:
Woodie said:
Rule 303 said:65psi.
D’ya remember how I was saying you want volume, not pressure? The pump’s ability to deliver litres per minute is going to be a lot more important, unless you’re waaaayy up hill from it.
It delivers, Mr 303. It delivers. And I“m about 2 metres from the pump. It’s outside the kitchen window.
7,200 l/hr it delivers.
You will find there’s a graph somewhere that show how high above the pump that is. Might be 0m. The graph will show 4,500l/hr at 1m, 2,200l/hr at 5m, 650 l/hr at 10m and so on (these numbers are rectal pluck). I think most people will find anything more than 10 litres/minute from a house tap is plenty.
