Test-Tite 4" Nps Pressure-Relief Pneumatic Test Plug

Test-Tite 4" Nps Pressure-Relief Pneumatic Test Plug Ultra-Durable Pressure-Relief Pneumatic Plug For Testing Dwv (Drain, Waste, And Vent) Systems Pressure-Relief Valve Releases Excess Pressure Into The Atmosphere To Prevent Plug From Rupturing Within Piping And To Ensure Pipes Do Not Slip Out Of Place Valve Has No Moving Parts, Minimizing The Risk Of Failure Or Malfunction Single-Piece Molded Rubber Body With No Glued Seams; Eliminates The Common Reason For Failure In Test Plugs Suitable For Use In Pvc, Abs, And Cast-Iron Piping Systems Pressure Relief Exhaust Out Of The Top Of The Plug Not Into Test Area MFG# 83588