Monument 1378Z Drain Testing Plug

The Monument 1378Z Drain Testing Plug is a durable, flexible device designed to seal drains and pipes for testing or maintenance. It is easy to install and suitable for blocking off drain pipes during repairs or inspections. The plug is sized for standard drains around 100 mm (4 inches) and can seal against pressures up to 1.97 bar (29 psi). It features removable top caps and rubber rings to secure the seal and uses a wing nut to depress a rubber cone, expanding it to create a water-tight seal. Compatible with openings in the 92–107 mm range, this plug is intended for reliable temporary sealing during testing activities.

Features

• Size 100 mm (4 in)
• Seals up to 1.97 bar / 29 psi
• Removable top caps and rubber rings
• Easy operation: insert and depress cone seal with wing nut
• Compatible with standard 92–107 mm openings
• Nylon plates and nylon stem