I had almost no experience with it until I spent a brutal, windy Minnesota fall installing 4 in. PVC conduit underground at a ...
The build uses PVC pipes for both the barrel and the air ... which is nicely within the 280 PSI rating of the 2″ Schedule 40 PVC being used. Though, as they note, the connections in the design ...
Use 4-in.-diameter 'Schedule 40' PVC, which is available from home centers. Here's how to do it: Lift the front edge of the ...