Does a PC emitter system require a " closed loop" in the mainline?

2klude

2klude

Well-Known Member
I plan on running netafim PC emitters over 3 different tables. Off the pump the mainline enters the room then tee's off to (3) different tables. Once on the tables can I just place a single main feed line down the center of the table or does this mainline need to loop around? I've run similar systems in the past, utilized a loop to even out the pressure/feeds but I was running open ended lines... in this new setup I'm running PC emitters with a pump that creates a lot of PSI.

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2com

Well-Known Member
2klude said:
I plan on running netafim PC emitters over 3 different tables. Off the pump the mainline enters the room then tee's off to (3) different tables. Once on the tables can I just place a single main feed line down the center of the table or does this mainline need to loop around? I've run similar systems in the past, utilized a loop to even out the pressure/feeds but I was running open ended lines... in this new setup I'm running PC emitters with a pump that creates a lot of PSI.

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I'm new to drippers, and learning about pc drippers now. But either way, it's my understanding that you definitely want a loop. The water pressure is equal that way - it's all 'pressing' against water/itself. Whereas if you have just a line and no loop, the end is pressing against the end of the line/pvc/etc.
I don't know if using pc drippers eliminates that issue or not.
 
G

GrowdoBaggins

Well-Known Member
Not super familiar with this particular product, but I worked irrigation for a few years and generally the thought was; loop it if you can.
 
kingromano

kingromano

Well-Known Member
the answer is no, PC drippers do not require a closed loop

you loop when you do not use PC drippers, to try to equalize the pressure in the circuit

pc drippers deliver the same amount of water under 1 bar of pressure, 2 bar or even 3 bar.

but you need a real pump to power your PC drippers
forget the aquarium pumps

ps: i use netafim pc junior 4liter/hour with a gardena 3000/4 pump
 
2

2com

Well-Known Member
kingromano said:
the answer is no, PC drippers do not require a closed loop

you loop when you do not use PC drippers, to try to equalize the pressure in the circuit

pc drippers deliver the same amount of water under 1 bar of pressure, 2 bar or even 3 bar.

but you need a real pump to power your PC drippers
forget the aquarium pumps

ps: i use netafim pc junior 4liter/hour with a gardena 3000/4 pump
Click to expand...
Makes sense, and good to know. I'll probably make a loop anyway, haha.

Are you using the "WPCJ" woodpecker drip emitters: https://www.irrigationdirect.ca/01wpcjl2-.5-gph-netafim-woodpecker-emitter.html? Or something else?
 
2

2com

Well-Known Member
kingromano said:
yes
in europe they call them PC jr. instead of woodpecker but it's the same
probably the best ones on the market
use 3x5mm tubing with (not the regular 4x6mm)
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I've been looking at netafim stuff; video and brochures, and the naming differences were throwing me off a big, haha. Thanks dude. They sound like top of the line, and what floraflex is probably imitating.

Do you have a journal or anything I could get a visual. I haven't seen many drip setups for cannabis on here, I like @Hot Diggity Sog new setup though, the flora flex one. I don't think he's up and running yet with the manifold irrigation, nice looking setup.
I think I'll just be going with drip emitters right off the larger (16/17mm) tubing (no "octoport" manifold).
 
kingromano

kingromano

Well-Known Member
netafim is agriculture equipment
they are very precise and autocleaning
i also use PC drippers for sog
21 stakes per table

you just need a good pince to pierce the irrgation line for drippers insertion
use the 3mm from netafim

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put as much you need on your line

i spent hours of work and failure to make this work, the hardest is to find the good tools

if you have this perforator( i dont know the english term for this sorry) no problems

get some good plasson fitting to assemble your lines, and a pair of plasson keys to tighten all this
your line will be under pressure so you don't have no room for leaks

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