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Black rubber mechanical pipe plug with white polypropylene handle and top plate, 3 inch size

Cherne

Cherne 271308 Mechanical Pipe Plug 3 in Natural Rubber

SKU CH-VP1C-HWXVB MPN 271308

Mechanical pipe plug seals 3-inch pipes between 2.89 and 3.09 inches with 13 psi air or 30 ft water back-pressure resistance

  • TypeDrain Components
  • Handles 13 psi air pressure for reliable pipe sealing
  • Withstands 30 ft of water head for strong back-pressure resistance
  • Fits 3 in pipes with 2.89 to 3.09 in inside diameter range
  • Polypropylene handle and plate provide durable, corrosion-resistant operation
  • Compact 3.7 in overall height allows use in tight spaces

Application & Sizing

This mechanical pipe plug is designed to seal 3-inch pipes during pressure testing or temporary block-off tasks. It fits pipe inside diameters from 2.89 inches to 3.09 inches and installs without special tools. The natural rubber sealing element compresses against the pipe wall to hold back pressure. It is suited for drainage, sewer and conduit work where a reusable, mechanical seal is required.

User Fit

Plumbers and maintenance crews performing low-pressure air or water tests will find this plug matches their sizing and pressure window. It is not for buyers who need a bypass connection for flow-through testing. It is not for applications exceeding 13 psi air or 30 feet of water head. It is not for pipes outside the stated diameter range or for permanent installations.

Deciding Specification

The sealing range of 2.89 to 3.09 inches inside diameter is the single figure that determines whether this plug will fit the pipe in hand. Maximum back-pressure ratings of 13 psi air and 30 feet of water head define the safe test envelope. Always verify the pipe inside diameter before selecting this model.

Highlights

  • Handles 13 psi air pressure for reliable pipe sealing
  • Withstands 30 ft of water head for strong back-pressure resistance
  • Fits 3 in pipes with 2.89 to 3.09 in inside diameter range
  • Polypropylene handle and plate provide durable, corrosion-resistant operation
  • Compact 3.7 in overall height allows use in tight spaces

Specifications

TypeDrain Components
BrandCherne Industries
Model271308

Questions about this item

What is the maximum back pressure the 271308 mechanical plug can hold when testing with air?

The plug is rated for a maximum back pressure of 13 psi when used with air.

What range of pipe inside diameters does the 3-inch model 271308 fit?

It fits pipes with an inside diameter between 2.89 in and 3.09 in.

How is the 271308 mechanical pipe plug installed and what is the common mistake?

Insert the plug into the pipe and tighten the handle to expand the natural rubber sealing element; the common mistake is over-tightening, which can damage the rubber or the polypropylene plates.

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