Downspout gutter injector (un-diverter) for rain barrel

This is a companion to my Downspout gutter diverter for rain barrel, which allows you to send the overflow of the rain barrel back into the gutter for easier management.

There is currently one size available, but message me if you'd like any of the others from the diverter model or a new one:

• 2"x3" (nominal) downspout, a common residential size in North America. The actual internal dimensions are 83mm x 57mm (8.5mm corner radius).

Design features

• Threaded inlet connector that is recessed into the body. This allows you to swap inlets (or put a cap in for winter), and minimizes the risk of damaging the main body. All adapters are identical to the ones from the diverter model.
• Easy access for maintenance by unscrewing the inlet connector.
• Internal drainage hole to direct water down and out instead of through the outlet threads (though this is less pertinent than on the diverter).
• Storage compartment on the opposite side for a second outlet adapter (swap your winter cap for the summer adapter).
• Inlet adapters can easily be remixed.
• Pre-"drilled" attachment holes for #6 or #8 screws.

Inlet adapters

• Cap: use this to keep all of the water going into the downspout.
• GHM: threads on to a garden hose (attach the female end of the hose to the male threads). Use a washer for the garden hose. Available in straight, 50 degree, 90 degree, and 90 degree extended.
• GHF: threads on to a garden hose (attach the male end of the hose to the female threads). Use a washer for the garden hose. Available in straight, 50 degree, and 90 degree.
• 22mm: fitting for a 22mm hose. Aavailable in straight, 50 degree.

Printing instructions

• Choose the injector body corresponding to the size of your downspout.
• Print the main injector body as oriented in the .stl file (upside down). I recommend a brim to secure it to the build plate.
• Print any inlet adapters you'd like to use, always as oriented in the .stl file.
• Some of the angled adapters require supports.

Installation instructions

• Identify the location in your downspout where you will place the injector. It should be well below the overflow of your rain barrel, and allow space for the hose to slope down to it. Try to keep the hose as short as possible for this.
• Create a space in your downspout of about 60mm for the injector (it's helpful to have the device with you and measure exactly). Make sure to leave enough downspout for the screws to attach.
• Add the injector into each piece, making sure the orientation of the internal “tap” points downwards.
• Make sure the bottom downspout is between the outer and inner shells.
• Use #6 or #8 screws as to secure it (one on each side is probably fine). For metal downspouts, consider self-tapping metal screws.
• Screw in the inlet adapter or cap you want to use. Optionally store another one in the slot on the opposite side.
• You may be interested in my Barb hose fitting to garden hose adapter.

Maintenance

• If you need to clean any debris out of the internal tap, just unscrew the outlet adapter, and push the debris out of the way or use a hose.

Notes

• Like most of my models, I've designed this with OpenSCAD and it is fully parameterized. If you would like a modification (e.g., dimensions, adapters, screw hole sizes), just send me a message.

Performs the inverse operation, to return the overflow of the rain barrel back into the gutter. All adapters for the original are compatible.