请注意:此版本的所有临时修订版将在您购买时提供。塑料配水管道可见火焰和烟雾特性的防火试验SUL 2846范围这是一种测试方法，用于测定可安装在管道、增压室和其他用于环境空气的空间中的用于分配饮用水的塑料管道对的火焰传播距离和光烟密度值。本试验方法适用于直径小于等于4英寸的管道。 本试验方法不适用于相邻（侧向）安装数量超过两个的塑料管。本试验方法不包括压力塑料管道的施工要求或其他性能要求。

Please note: All interim revisions for this edition available at time of your purchase will be included.Fire Test of Plastic Water Distribution Plumbing Pipe for Visible Flame and Smoke CharacteristicsUL 2846ScopeThis is a test method for determining values of flame propagation distance and optical smoke density for individual pairs of plastic plumbing pipes for distribution of potable water that can be installed in ducts, plenums, and other spaces used for environmental air.This test method addresses pipe sizes 4 inc. and less in diameter.This test method does not cover plastic pipes when installed adjacent (side to side) in quantities greater than two.This test method does not cover the construction requirements for plastic plumbing pipe for pressure or other performance requirements.