posiden
Active Member
Quote:
Originally Posted by 2Quills http:///forum/thread/382045/spraybars-surface-aggitation-and-overflows/40#post_3333231
Quote:
Originally Posted by Posiden
http:///forum/thread/382045/spraybars-surface-aggitation-and-overflows/40#post_3333206
Quote:Sorry, I disagree. Using two 1/2" pipes isn't the same as one 1" pipe. Circles and cylinders are funny things. The two 1/2" pipes would only be able to hold half as much as the 1" pipe. When ever you double the diameter of a cylinder you increase its volume by 4 times.
Also if you just go on the SA, the two 1/2" pipes only make up about half of the 1" pipe.
Could the user get away with it? In this case, maybe. Due to the fact that the pump is being choked down. The pipe would do the choking for him and not the ball valve, as you already stated. IMO, if the user was to use the 1/2" pipe. Using .125 diameter holes. He would need 16 of them. A smaller hole would require more of them.
Ok, looking at the pipe I could see how you could quadrupal the the volume of the pipe when you double the size. So two 1/2" might be cutting it a bit much. Perhaps spliting it with two 3/4" and keeping the valve for fine tuning would be a better option. Again, in this instance choking off some of the flow is kind of my point. But I guess it depends on how vigorous the user wants the ripple action to be.
Yea, its odd to think that at first. But if you think about it, two half inch circles fit inside of a one inch circle just fine. So you can add two more and still have some surface left over. The area in between the four half inch circles that is. Using 3/4" would give more SA then the 1" pipe. So two 3/4" pipes would be right in the area "IF" one wanted to use the ball valve. I know you mentioned the use of the pipe to cut the flow down. I mentioned that in my last post. I agree with that idea. I'm not sure how much it would effect it? I do really only have a grade school education here. I never went to any type of collage. In the words of Doc Holiday..."My Hypocrisy goes only, so far."
I think a big part of this that hasn't really been discussed is the pump. There are some that are pressure rated and some that are flow rated. That will have dramatic effect on how this spray bar performs. Just like the Becket style skimmers. Some pumps do wonders and others.....not so much. I would guess the QuietOne pumps are flow rated. I'm not real sure? Doing a quick guess on the pump at hand. A QuietOne 4000 should be in the area of 700ish GPH with 1" pipe, 4' of head, two 90s, two 45s, one ball valve, and one union. I wonder if the pump is the High Head version?
Originally Posted by 2Quills http:///forum/thread/382045/spraybars-surface-aggitation-and-overflows/40#post_3333231
Quote:
Originally Posted by Posiden
http:///forum/thread/382045/spraybars-surface-aggitation-and-overflows/40#post_3333206
Quote:Sorry, I disagree. Using two 1/2" pipes isn't the same as one 1" pipe. Circles and cylinders are funny things. The two 1/2" pipes would only be able to hold half as much as the 1" pipe. When ever you double the diameter of a cylinder you increase its volume by 4 times.
Also if you just go on the SA, the two 1/2" pipes only make up about half of the 1" pipe.
Could the user get away with it? In this case, maybe. Due to the fact that the pump is being choked down. The pipe would do the choking for him and not the ball valve, as you already stated. IMO, if the user was to use the 1/2" pipe. Using .125 diameter holes. He would need 16 of them. A smaller hole would require more of them.
Ok, looking at the pipe I could see how you could quadrupal the the volume of the pipe when you double the size. So two 1/2" might be cutting it a bit much. Perhaps spliting it with two 3/4" and keeping the valve for fine tuning would be a better option. Again, in this instance choking off some of the flow is kind of my point. But I guess it depends on how vigorous the user wants the ripple action to be.
Yea, its odd to think that at first. But if you think about it, two half inch circles fit inside of a one inch circle just fine. So you can add two more and still have some surface left over. The area in between the four half inch circles that is. Using 3/4" would give more SA then the 1" pipe. So two 3/4" pipes would be right in the area "IF" one wanted to use the ball valve. I know you mentioned the use of the pipe to cut the flow down. I mentioned that in my last post. I agree with that idea. I'm not sure how much it would effect it? I do really only have a grade school education here. I never went to any type of collage. In the words of Doc Holiday..."My Hypocrisy goes only, so far."
I think a big part of this that hasn't really been discussed is the pump. There are some that are pressure rated and some that are flow rated. That will have dramatic effect on how this spray bar performs. Just like the Becket style skimmers. Some pumps do wonders and others.....not so much. I would guess the QuietOne pumps are flow rated. I'm not real sure? Doing a quick guess on the pump at hand. A QuietOne 4000 should be in the area of 700ish GPH with 1" pipe, 4' of head, two 90s, two 45s, one ball valve, and one union. I wonder if the pump is the High Head version?