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Cherne 4 inch mechanical pipe plug, ABS plate, rubber seal, zinc handle, 2.5 inches tall

Cherne

Cherne 270296 4 in Mechanical Pipe Trap

SKU CH-7VVK-WJJBD MPN 270296

Mechanical pipe plug seals 4 in lines to 17 psi air or 40 ft water head with ABS plate, rubber seal and zinc handle

  • TypeDrain Components
  • MaterialHAWA
  • Seals pipes from 3.8 to 4.06 in inside diameter
  • Withstands 17 psi air back pressure
  • Handles 40 ft of water head pressure
  • Compact 2.5 in height fits tight spaces
  • ABS plate with zinc handle for corrosion resistance

4-Inch Mechanical Pipe Plug

The Cherne 270296 is a mechanical pipe plug designed for 4-inch piping systems. It seals pipes with an inside diameter between 3.8 and 4.06 inches. The plug features an ABS plate with a rubber seal and a zinc handle for manual operation. It suits maintenance crews and contractors needing temporary line isolation.

Pressure Limits and Build Height

The plug withstands up to 17 psi of air back pressure or 40 feet of water head. Its overall height measures 2.5 inches, allowing it to fit inside the pipe without protruding. The ABS and rubber construction resists corrosion during normal sewer and drain testing. No water fill port or hose is included with this unit.

Replaces Inflatable Test Balls

This mechanical plug replaces inflatable test balls when a reusable, tool-free seal is preferred. The jump is worth it for teams who need fast installation without a pump or compressed air source. It is not suited for pipes outside the 3.8 to 4.06-inch ID range or for pressures exceeding the stated limits.

Highlights

  • Seals pipes from 3.8 to 4.06 in inside diameter
  • Withstands 17 psi air back pressure
  • Handles 40 ft of water head pressure
  • Compact 2.5 in height fits tight spaces
  • ABS plate with zinc handle for corrosion resistance

Specifications

TypeDrain Components
MaterialHAWA
BrandCherne Industries
Model270296

Questions about this item

How is the Cherne 270296 mechanical pipe plug installed and what step is often missed?

Insert the plug into a 4 in pipe with an inside diameter between 3.8 in and 4.06 in, then tighten the zinc handle to expand the rubber seal; the step often missed is verifying the pipe ID falls inside that range before installation.

What maintenance or replacement will the Cherne 270296 plug need over time?

Inspect the rubber sealing element and ABS plate for cracks, hardening or deformation after each use; replace the plug if the seal no longer holds 17 psi air or 40 ft of water head.

What pressure limit appears first during sustained testing of the Cherne 270296 plug?

The 17 psi maximum air back-pressure rating is reached before the 40 ft of head water rating, so air testing will hit the limit first under sustained pressure.

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