Are you trying to set up fertigation for the tomatoes and peppers? Something like this. If so then it is fertigation system plans you need to be Googling.

If not can you clarify the goal here? What will be the original source? Well, garden hose, above ground PVC water line? etc.

If this is for Hydroponics rather than in-ground fertigation then the Hydro forum has all sorts of various set-up info.

Dave

It is for fertigation.

I've purchased several Mazzei-type venturi units.

I need/want to build a PVC bypass valve - like the one in my original post, but I want the section where the venturi connects to allow for a 'swappable' section since the units are of different sizes.

Given that I've found howto's for PVC tomato cages, PVC furniture, etc. I'm looking for a howto and parts list (something I can shop at HD/Lowes with) for the bypass valve.

i.e. I need a ball valve for the shutoff, 1/2" PVC U splitter (it has a different name and knowing that when I walk into HD will save time), a PVC to Hose male/female? connector (that has a name too), etc.

Knowing what something is called is really helpful when shopping at HD since saying you need the 'thingamagig' doesn't create an incentive for some of the employees there.

Additionally, knowing what kind of length offsets various pieces create will help me when cutting the PVC to the (hopefully) right lengths.

I understand the fertigation, it's the measurements and parts for the bypass valve. I could spend $100 and buy one, but I'd feel more accomplishment spending $20 on parts and putting it together myself.

So, I'll post in the hydro section, but any added help from here would be appreciated.

Andrew