question about APH
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question about APH
Hi, I have a couple questions about making the APH (by DOOM) decribed on this website. First, if you do not plan on using the optional backpack, can you just replace the lower check valve with an end piece, or is it still important.
Also, I am not sure how you fill it with water.
Thanks in advance for any help.
-Jonathan
Also, I am not sure how you fill it with water.
Thanks in advance for any help.
-Jonathan
- Silence
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Welcome to the forums!
In case you didn't know, since the article didn't mention it, the backpack used is usually one detailed in the backpack mod article. You can use pretty much anything you want, though. Many water guns have PVC backpacks or PVC reservoirs on the water gun itself.
No matter what type of reservoir you use, you'll need a check valve between the reservoir and the pump. The animation in the HowStuffWorks article shows how the check valve setup correctly channels the water.
Oh, and Doom is now known as Ben (the webmaster), in case you see him on the forums.
In case you didn't know, since the article didn't mention it, the backpack used is usually one detailed in the backpack mod article. You can use pretty much anything you want, though. Many water guns have PVC backpacks or PVC reservoirs on the water gun itself.
No matter what type of reservoir you use, you'll need a check valve between the reservoir and the pump. The animation in the HowStuffWorks article shows how the check valve setup correctly channels the water.
Oh, and Doom is now known as Ben (the webmaster), in case you see him on the forums.
- SSCBen
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- SSCBen
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You can find most anything you might need at McMaster-Carr. I would suggest buying two of part number 46835K52.
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- SSCBen
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If you glued everything from the first check valve to the nozzle, you should have no problems getting pressure. I'll help you troubleshoot though. Answer the following questions.
By first check valve, do you mean the one before the pump?
What diameter is the pipe you used for your pump?
Is the pump seal leaking?
Is the pump sucking up a lot of air? The pump may feel "bouncy" if it is.
Are there any visible leaks?
How strong are you?
These questions will help determine why you're not getting adequate pressure.
By first check valve, do you mean the one before the pump?
What diameter is the pipe you used for your pump?
Is the pump seal leaking?
Is the pump sucking up a lot of air? The pump may feel "bouncy" if it is.
Are there any visible leaks?
How strong are you?
These questions will help determine why you're not getting adequate pressure.
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- Joined: Tue Jun 19, 2007 4:09 am
Hey, I just glued everything together completely.
...My pump is 1/2 in.
...The pump seal is very tight. I used a rubber stopper that was a little too small to fill the 1/2 in. pvc, sp I wrapped it with duct tape, then wrapped that with a lot of teflon tape to make it pump smoother. The end result is pretty tight.
...It gets to a point where it doesn't want to suck in more air in the back check valve.
...There are no leaks at all.
...I am pretty strong.
It seems to get to a point where it is no longer pulling in air ( from the back check valve) on the out strokes of the pump (my check valves stops honking).
Thanks, Jonathan
...My pump is 1/2 in.
...The pump seal is very tight. I used a rubber stopper that was a little too small to fill the 1/2 in. pvc, sp I wrapped it with duct tape, then wrapped that with a lot of teflon tape to make it pump smoother. The end result is pretty tight.
...It gets to a point where it doesn't want to suck in more air in the back check valve.
...There are no leaks at all.
...I am pretty strong.
It seems to get to a point where it is no longer pulling in air ( from the back check valve) on the out strokes of the pump (my check valves stops honking).
Thanks, Jonathan
- Scavenger
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