Historically, the plumbing and HVAC industry has not nationally regulated the use of thermoplastic Flue Gas Venting pipe, fittings, and accessories.
The safety concern is in the use of plumbing Drain, Waste and Vent (DWV) products, such as Schedule 40 Solid Wall and Foam Core DWV in Flue Gas Venting (FGV). These products were never intended to be used in FGV
applications, but they have been chosen because they are often the least expensive materials available.
The use of Schedule 40 Solid Wall or Foam Core DWV pipe and fittings do NOT meet the UL 1738 safety standard for venting one of the most dangerous and silent killers: carbon monoxide.
Learn why you should choose System 1738 for your next flue gas venting project.View Document