Method 1: Use an Oatey Gripper Pipe Plug
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3 Ways To Temporary Cap A Drain Line
What happens here
To install a robust temporary drain cap, locate the 1 1/2-inch copper DWV (Drainage, Waste, and Vent) pipe, which has a brass MIP (Male Iron Pipe) adapter with external threads. Take an Oatey Gripper pipe plug, which is a rubber plug with a wing nut mechanism. Insert the gripper plug into the drain opening and then tighten the wing nut. As the wing nut is tightened, the rubber expands, creating a secure, watertight, and airtight seal within the drain pipe, effectively preventing sewer gases from escaping.
Goal: Seal the drain line using an expandable gripper plug
Tools and materials
- Oatey Gripper Pipe Plug Oatey — Temporarily sealing the 1 1/2-inch drain line