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Cherne 270178 3 inch mechanical pipe plug with ABS plate and rubber seal

Cherne

Cherne 270178 3 in Mechanical Pipe Plug Trap

SKU CH-43WF-DBYGY MPN 270178

Mechanical pipe plug seals 3 in pipes with ABS plate and rubber, rated for 17 psi air or 40 ft water head

  • Product typeDrain Components
  • Seals 3 in pipes with ABS plate and rubber
  • Holds 17 psi air pressure for leak testing
  • Withstands 40 ft water head in vertical runs
  • Fits 3.23–3.5 in inside diameter range
  • Compact 2.2 in height for tight access

Mechanical pipe plug for 3 in pipes

The Cherne 270178 is a mechanical pipe plug designed to seal pipes with a 3 in nominal size. It fits pipe inside diameters ranging from 3.23 in to 3.5 in. The plug uses an ABS plate and rubber sealing components for a secure fit at the end of the pipe. It is intended for plumbing professionals and maintenance crews performing pressure tests or temporary blockages.

Pressure and installation limits

The plug withstands a maximum back pressure of 17 psi for air tests and 40 ft of head for water tests. Exceeding these limits can cause the seal to fail or the plug to dislodge. The overall height of 2.2 in determines the clearance needed inside the pipe or fitting for proper placement. No bypass connection, water fill port, or hose attachment is included with this model.

Pipe inside diameter range decides fit

The single specification that determines whether this plug works is the pipe inside diameter, which must fall between 3.23 in and 3.5 in. Pipes outside this range will not seal correctly with the 270178 model. Buyers needing to seal smaller or larger diameter pipes must select a different plug size.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 84% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameCherne Industries
Model name270178
Product typeDrain Components

Questions about this item

Which pipe size does the 270178 mechanical plug fit?

The 270178 model fits a 3 in pipe size and seals inside diameters from 3.23 in to 3.5 in.

What does the 17 psi air rating mean when the plug is installed?

It means the plug will hold back up to 17 psi of air pressure without leaking when properly seated.

What does the 40 ft head rating cap in a water test?

It caps the maximum water back-pressure the plug can withstand at 40 ft of head in a vertical column.

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