HDPE Connection Methods
HDPE Connection Methods
(OP)
Hello All -
We are designing a water remediation system with 10,000 feet of 3/4" DR 11 HDPE. I've heard of stories of poor butt welds resulting in significant constriction in the pipe and headloss (rendering the pumps useless until the welds were fixed). I'm sure it was poor installation technique/QC of joints but which joint method do you believe results in the lowest likelihood of constriction/internal bead formation (or is there even a method that eliminates this)? I know there are various joint methods but I've only used butt welding on larger diameter pipes.
Best regards,
Ken
We are designing a water remediation system with 10,000 feet of 3/4" DR 11 HDPE. I've heard of stories of poor butt welds resulting in significant constriction in the pipe and headloss (rendering the pumps useless until the welds were fixed). I'm sure it was poor installation technique/QC of joints but which joint method do you believe results in the lowest likelihood of constriction/internal bead formation (or is there even a method that eliminates this)? I know there are various joint methods but I've only used butt welding on larger diameter pipes.
Best regards,
Ken





RE: HDPE Connection Methods
For integer sizes of pipe the answer is QA/QC. Specify the acceptable misalignment and have someone verify that every single joint is withing that tolerance. It is a lot less expensive than digging it up because of failed joints through poor fusion or major misalignment.
David
RE: HDPE Connection Methods
RE: HDPE Connection Methods
David
RE: HDPE Connection Methods