Jump to content

Advise needed!


CalciumReef
 Share

Recommended Posts

  • SRC Member

or when drill a hole in your pipe to prevent the ewater from flowing back.. meaning there is a air to sub the water and this will ensure that the water will not flow back... you know the pipe gg back to your tak? dril a hole at the bottom of the pipe.. dun drill at the top.. if top will have air being suck in

Link to comment
Share on other sites

or when drill a hole in your pipe to prevent the ewater from flowing back.. meaning there is a air to sub the water and this will ensure that the water will not flow back... you know the pipe gg back to your tak? dril a hole at the bottom of the pipe.. dun drill at the top.. if top will have air being suck in

I am interested in your idea. However, in normal operation, won't the water spray out from the hole even though it is at the bottom?

Do you have a diagram to illustrate? Thanks

Link to comment
Share on other sites

  • SRC Member

I am interested in your idea. However, in normal operation, won't the water spray out from the hole even though it is at the bottom?

Do you have a diagram to illustrate? Thanks

There is valve in piping, but expensive, like $20-50 each, depending on the size of pipe.

For the hole, it should be below the water level, but the backflow level will not flood your tank.....(I'm quite 'expert' in this after some flooding experienec!!! :(

Link to comment
Share on other sites

  • SRC Member

hi! just add this in another topic so maybe i have to quote myself again... hope this will help u.....

it's true, if ur return pump fails water will overflow the sump... solution:

1) maintain the water in such a way that even if REVERSE FLOW happens, the water in the overflow box will dry up first before it can fill up the sump to overflow level....

2) make ur return pipe nearest possible to the water surface so once it grasps air, the REVERSE FLOW will stop... another way is drill a small hole at the return pipe just right above the water surface, it will weaken the return pressure abit but in case of return pump failure, it will cut off the siphon due to air sipping in the whole.

Link to comment
Share on other sites

  • SRC Member

Ah Siao is right.

What he is trying to say is drill a hole at the return pipe which is in your main tank at the point (outlet) just below the water level. When power failure and the water flows back into sump, the water in the tank will drop below the drilled hole and suck in air. Hence breaking the siphon effect.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share



×
×
  • Create New...