09/03/2026
One of the items on the agenda of yesterday's State Plumbing Board meeting was Comstar products Copper Lock.
If you are an inspector, or use this product, this will affect you... Apparently, when it was originally accepted back in 2007, it was only for a few test sites and never approved beyond that. Originally, it was approved for joining WATER PIPING ONLY, for RESIDENTIAL ONLY, and ONLY UP TO 1½" pipe.
The product manufacturer has modified its permitted use since then, without contacting the Board for approval, and has since, allowed it on drainage, and from what was said at the meeting, can be used up 6" without issues. The packaging on the product has conflicting info, one section reads it can seal up 2", and on the bottle on the same instructions, reads good up to 1½". (Attached for reference)
This is what originally brought up questioning. They also have only done in house testing, and not gone for 3rd party testing which is required for product approval.
So as of today, Sept. 3rd, it is ONLY ALLOWED to be used as it was originally allowed for the test sites, until the company applies for approval for drainage use, and for sizes over 1½". If you check on the product approval page, it will be updated today with the restrictions listed where it is approved for use.
This will take at the very best outcome, months to be allowed differently.
If you are an inspector, word from Boston is if an inspection occurs and Copper Lock is used on anything over 1½", or on drainage on any size, or on water piping or drain piping for commercial, the job should be a fail. If the system fails for a something outside of what it was approved for, there could liability concerns.
This will be covered on the next CE class coming up for both inspectors and licensees.