HOB overflow
- Thread starter sickboy
- Start date
keebler
Member
Originally Posted by sickboy
http:///forum/post/2764343
Ok, then my next question is: Would I want the overflow to be rated higher than the pump, or the pump higher than the overflow? I figure that ideally you want them the same, but I don't think that will happen
The overflow MUST be rated higher than the pump. The overflow automatically adjusts itself to the pumps gph and it stays consistent. If your pump's gph rating is too high, then your tank will overflow. If they are the rated the same, then you risk the pump having a slightly higher gph and overflowing the tank. Get the overflow higher.
http:///forum/post/2764343
Ok, then my next question is: Would I want the overflow to be rated higher than the pump, or the pump higher than the overflow? I figure that ideally you want them the same, but I don't think that will happen
The overflow MUST be rated higher than the pump. The overflow automatically adjusts itself to the pumps gph and it stays consistent. If your pump's gph rating is too high, then your tank will overflow. If they are the rated the same, then you risk the pump having a slightly higher gph and overflowing the tank. Get the overflow higher.
wattsupdoc
Active Member
Originally Posted by Keebler
http:///forum/post/2764350
The overflow MUST be rated higher than the pump. The overflow automatically adjusts itself to the pumps gph and it stays consistent. If your pump's gph rating is too high, then your tank will overflow. If they are the rated the same, then you risk the pump having a slightly higher gph and overflowing the tank. Get the overflow higher.
No, this is not correct. You have head loss and need to account for that. You can add a ball valve to dial the pump back some in the return line if need be. This will allow you to max out the flow through the OF box. Which, IF the flow is fast enough and you have a U tube OF box, then you will not get a flood from a broken syphon. If you have the CPR style, you MUST have a pump to keep the prime. An AQUA LIFTER is a perfect pump for this. You can use one on the U tube design also if you like, but IMO, it's not necessary.
http:///forum/post/2764350
The overflow MUST be rated higher than the pump. The overflow automatically adjusts itself to the pumps gph and it stays consistent. If your pump's gph rating is too high, then your tank will overflow. If they are the rated the same, then you risk the pump having a slightly higher gph and overflowing the tank. Get the overflow higher.
No, this is not correct. You have head loss and need to account for that. You can add a ball valve to dial the pump back some in the return line if need be. This will allow you to max out the flow through the OF box. Which, IF the flow is fast enough and you have a U tube OF box, then you will not get a flood from a broken syphon. If you have the CPR style, you MUST have a pump to keep the prime. An AQUA LIFTER is a perfect pump for this. You can use one on the U tube design also if you like, but IMO, it's not necessary.