PS2 vs Quiet One 4000 HH
- Thread starter caz2022
- Start date
snakeblitz33
Well-Known Member
Are you pushing it up from the basement? What size pvc are you using?
caz2022
Member
Originally Posted by natclanwy
http:///forum/post/2875644
A quietone 4000HH will give you about 400gph at 10ft of head, what type of overflow do you have?
I have two different overflows-one rated for 600 ghp and the other for 1200 gph
http:///forum/post/2875644
A quietone 4000HH will give you about 400gph at 10ft of head, what type of overflow do you have?
I have two different overflows-one rated for 600 ghp and the other for 1200 gph
maxsmart
Member
Originally Posted by natclanwy
http:///forum/post/2878830
If they HOB are overflows the 4000HH will be the bare minimum for the 600GPH overflow and not nearly enough for the 1200gph overflow. If you have a drilled tank then it doesn't matter what your flow rate is.
Why wouldn't it matter? Does the overflow tube creating a siphon if the water level rises above it force an increased flow? I am curious, I was thinking about increasing my return pump size.
http:///forum/post/2878830
If they HOB are overflows the 4000HH will be the bare minimum for the 600GPH overflow and not nearly enough for the 1200gph overflow. If you have a drilled tank then it doesn't matter what your flow rate is.
Why wouldn't it matter? Does the overflow tube creating a siphon if the water level rises above it force an increased flow? I am curious, I was thinking about increasing my return pump size.
natclanwy
Active Member
No, HOB overflows require a minimum amount of flow rate to keep air from accumulating at the top of the U-tube. In this case the OP was trying to push the water up 10ft which creates a large head pressure for the pump to overcome so the 1000gph 4000HH pump will only pump at rate of 400gph. Which is the bare minimum flow rate for a 600gph overflow.
caz2022
Member
Originally Posted by natclanwy
http:///forum/post/2935568
No, HOB overflows require a minimum amount of flow rate to keep air from accumulating at the top of the U-tube. In this case the OP was trying to push the water up 10ft which creates a large head pressure for the pump to overcome so the 1000gph 4000HH pump will only pump at rate of 400gph. Which is the bare minimum flow rate for a 600gph overflow.
My U-tubes both have an airline hooked to a lift pump. It pulls the air out and prevents the syphon from being broken.
http:///forum/post/2935568
No, HOB overflows require a minimum amount of flow rate to keep air from accumulating at the top of the U-tube. In this case the OP was trying to push the water up 10ft which creates a large head pressure for the pump to overcome so the 1000gph 4000HH pump will only pump at rate of 400gph. Which is the bare minimum flow rate for a 600gph overflow.
My U-tubes both have an airline hooked to a lift pump. It pulls the air out and prevents the syphon from being broken.
natclanwy
Active Member
Actually the holes allow the syphon to break, this is why you need the pump to keep the syphon going. A normal U-tube without airline fittings will never lose its siphon as long the return pump and U-tubes are sized correctly and are properly maintained. Regular U-tubes without airline fittings are by far the most reliable type of overflow with the style Caz is using following behind and CPR style overflows coming in last.
