Neat trick if you are building with 3" PVC and you want one-way flow for any reason. You will need: ~The pipe you were going to use ~The elbow or fitting you were going to use ~ a wide mouth Mason jar lid. Try it for yourself! Visit ...
by MONA DIY
by You can do this
by Come and see
by muggulu rangoli
by Sana Hand Stitch
by Dale Ovenstone