Test-Tite Test-Tite 83588 Natural Rubber Pressure-Relief Pneumatic Test Plug, For 4-Inch NPS, 12-Count Bulk Pack

Safely and reliably test DWV (drain, waste, and vent) systems with the Test-Tite Natural Rubber Pressure-Relief Pneumatic Test Plug. Available in a variety of sizes and suitable for use in PVC, ABS, and cast-iron piping systems, this pipe plug offers contractors the strongest reusable option on the market for testing shower drains, cleanout tees, and sewer wyes. Its pressure-relief valve reduces the risk associated with overinflation by releasing excess pressure into the atmosphere, so the plug does not rupture in the pipe. The valve has no moving parts helping minimize the chance of failure or malfunction and is integrated into a glass-filled nylon core for protection and stability. Made of a one-piece molded rubber body with no seams or bonded parts, the Test-Tite Pressure-Relief Pneumatic Test Plug is extra durable and designed for reuse. Multiple sealing ribs are built into the center portion of the plug for positive sealing inside the pipe. The ring tag is attached to the nylon core rather than the valve stem for extra rigidity, and the large molded plastic tag (at the other end of the chain) will not bend or deform, preventing it from falling into the pipe.|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