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Joined: Sep 2016
Posts: 271
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OP
Joined: Sep 2016
Posts: 271 |
My 2 acre-ish pond is nearing final construction phase. 8" siphon system was installed yesterday, looks great but they stubbed out a 4" vent pipe for the siphon control. It will be reduced down to 2" for the balance of the vent piping. My question is: will the initial 4" piping interfere with the proper operation of the siphon system? 
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Joined: Jun 2007
Posts: 7,099 Likes: 23
Ambassador Field Correspondent Hall of Fame  Lunker
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Ambassador Field Correspondent Hall of Fame Lunker
Joined: Jun 2007
Posts: 7,099 Likes: 23 |
Roundy, the short answer is it will function fine.
I would also suggest you stay with the 4" size for strength over a 2" reduction. If your vent whirlpools and breaks the siphon early, a larger pipe is easier to modify and attach a paddle to. Plus, far less chance of an accidental stoppage from debris.
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Joined: Jun 2007
Posts: 7,099 Likes: 23
Ambassador Field Correspondent Hall of Fame Lunker
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Ambassador Field Correspondent Hall of Fame Lunker
Joined: Jun 2007
Posts: 7,099 Likes: 23 |
The inlet of the siphon pipe will need a Tee (or stack of large rocks) that prevents a high suction area from forming, or it will plug up quickly. It would be wise to put a cap on the siphon break also, with several 1/4" holes drilled in it so the air break does not pull in sticks that could block the pipe also, or plug the air break.
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Joined: Sep 2016
Posts: 271
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OP
Joined: Sep 2016
Posts: 271 |
 This is how it is installed. Cage end on main intake and smaller cage on vent. There is one brace, but I think it needs to be braced much better to reduce vibration and protect piping. They made it all out of 4" pvc.
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Joined: Sep 2016
Posts: 271
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OP
Joined: Sep 2016
Posts: 271 |
Also seen this in one of my photos when reviewing.  
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Joined: Sep 2016
Posts: 271
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OP
Joined: Sep 2016
Posts: 271 |
Overview of pond project 
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