Marketing InformationSafely and reliably test DWV (drain, waste and vent) systems with the TEST-TITE® natural rubber multi-size pneumatic test plug. Designed for two or more pipe sizes, this test plug is suitable for use with many different piping materials and offers contractors a dependable option for testing and temporarily stopping the flow of pipelines. Plug models for 4 to 8 in NPS through 12 to 24 in NPS include a pressure relief valve that reduces the risk associated with over inflation by releasing excess pressure into the atmosphere, so the plug doesn't rupture in the pipe. Flexible yet rugged, the TEST-TITE® multi-size pneumatic test plug is constructed from a durable natural rubber compound and can be reused for multiple jobs. Plug models for 1-1/4 to 2 in NPS through 3 to 4 in NPS come with a 1/4 in NPT replaceable inflation valve.