My pond/Food Forest

JohnDB

Active member
Lifetime Member

Equipment
M4500DT with FEL, back blade, Someca K28 hay mower, drag broom, post driver
Jun 9, 2018
544
176
43
NZ
From my experience with a 4" line and a different 1" line, the 'bump' only needs to be more than the diameter of the pipe to cause an air pocket. Each bump adds up. There's a fair bit about the physics of this on the 'net. So only if you get enough positive pressure will you get flow, and even more pressure to expell the bulk of the air pockets, and then that pressure is no longer needed because you have overcome the air pocket effect.

According to that info. its not a permanent solution because vapour pressure or whatever recreates the air pockets over time. Only permanent solution (other than eliminating the bumps) is to vent them. I had to do that on the 1" line, and eventually adjust the route so that the bumps were so small as to allow flow to continue.
 
  • Like
Reactions: 1 users

Scm

Well-known member

Equipment
BX23S
Sep 28, 2024
348
362
63
Missouri
So you put a pond in and a food plot so you can shoot deer off the back porch,,, got ya
That is not what I was planning. But, we will need red meat after the two steers walking my pasture are gone in a couple years. I don't think we will be getting anymore steers or beef too easily then. Times are changing, fast.
 

Scm

Well-known member

Equipment
BX23S
Sep 28, 2024
348
362
63
Missouri
I made a better drawing. Everything lays consistent except one small dip (noted) under the float valve line.

I have been under the impression that when the pond fills up and goes over the inlet, water would enter the pipe go to the red line and displace the air that would go back up the pipe and out the top. Then fill the pipe all the way from the float valve line to the pond. This does not appear to be happening.


airgap.jpg

One small note is there is 440' of total pipe from the bottom of the pond to the float valve.