A sprayer suitable for Gardena Qick Connect.
Printed from ABS and successfully tested.

Part 2 is placed over part 4, then part 5 is screwed on.
I have coated the thread of part 4 with acetone to glue both parts together.
The seals I printed from very soft TPU.
Part 3 is pushed into Part 1 and screwed in a bit. A little grease can not hurt, so it's easier to turn. Then both parts are pushed together and screwed.

If you steam the parts with acetone, they should be waterproof.