I am installing a mainline for a residential lawn irrigation system. I laboriously dug down to the pipe leading to a yard hydrant, three feet deep. I installed a tee, and on the branch from the tee I installed a PVC ball valve and drain.
To winterize the system I will close the ball valve and purge the pipe downstream but I will need a way to access this valve from the ground surface. I propose a three foot length of six inch diameter DWV pipe.
Is this what is commonly done? (My arm is only so long) should I have used an expensive curb key valve?
Should I use ABS or PVC or whatever I can find? How should I cap this off?