Halfords 20L Screw Cap Jerry Can Spout – Vented, Ø15 Tip

Fits the Halfords 20L metal screw cap jerry can (shown in the photos). It also fits other 20L metal cans with the same 57.7 mm screw neck.

Screw-on pouring spout I made for diesel, to fill small tanks slowly and cleanly: generators, mowers, heaters.

Features

• Two parts, points any way. The nut threads onto the can and clamps the spout's flange, so you turn the tube to where you want it and then tighten the nut.

• Built-in air vent. A half-round channel is moulded into the tube wall. It starts at the edge of the neck, in the can's air space, and opens at the tip. The pour stays smooth, nothing drips from a separate vent, and the flow stops by itself when the tip goes under the fuel in the tank.

• Funnel-shaped tube. It is Ø35 at the cap and narrows to Ø15 at the tip, with the last 30 mm straight. The wall is 1.8 mm everywhere, with a 45° bend.

• Six big grip lugs on the nut for hand tightening.

• 2 mm flat TPU gasket between the can's lip and the flange. It is optional: you can use the O-ring from the can's original screw cap instead.

Can neck dimensions

Thread outer Ø57.7 mm, thread root Ø54.7 mm, pitch 4 mm, opening about Ø46 mm. Check your can before printing.

Printing

• 0.6 mm nozzle, 0.3 mm layers, 4 walls, 15% infill. Use PETG or ABS, which handle diesel.

• Spout body: flange down with a brim. No supports.

• Nut: roof down. No supports.

• Gasket: TPU, flat. Optional, see above.

• The vent channel wall is a single 0.62 mm line. Use a line width of 0.62 mm or more so the slicer doesn't drop it.

Assembly

1. Slide the nut over the tube from the tip.

2. Lay the gasket, or the O-ring from the original cap, on the can's neck.

3. Set the spout on the gasket and point the tube where you want it.

4. Screw the nut down by hand.

Files: STL for each part, plus the STEP of the full assembly. It is designed for diesel. Check that your filament is compatible before using it with other fuels.