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Cherne 4-inch mechanical locking plug with stainless steel handle and plastic plate

Cherne

Cherne 271683 4 in Mechanical Locking Plug

SKU CH-M4GD-GT5Q6 MPN 271683

Mechanical locking plug seals 4-inch pipes from 3.8 to 4.38 inches inside diameter, withstands 15 ft water head or 6.5 psi air pressure, and accepts a padlock shackle up to 3 1/2 inches for security

  • Product typeDrain Components
  • Mechanical lock secures 4 in pipes without tools
  • Stainless steel handle resists corrosion during repeated use
  • Withstands 6.5 psi air or 15 ft water back-pressure
  • Fits pipe IDs from 3.8 in to 4.38 in
  • Plastic plate reduces weight while maintaining seal

Mechanical Locking Plug for 4 Inch Pipes

The Cherne 271683 is a mechanical locking plug designed to seal pipes with a 4 inch nominal size. It fits inside diameters ranging from 3.8 inches to 4.38 inches. The plug features a stainless steel handle and a plastic sealing plate. It is supplied new for plumbing and drainage applications.

Suitable for Temporary Pipe Sealing and Testing

This plug suits technicians who need a mechanical seal for pressure testing or temporary blockage in 4 inch lines. It handles air back pressure up to 6.5 psi and water back pressure up to 15 feet of head. It is not for buyers who require a bypass connection for flow-through operations. It also lacks an integrated water fill port or hose.

4.38 Inch Maximum Inside Diameter Fit

The decisive specification is the maximum pipe inside diameter of 4.38 inches. This limit determines whether the plug will seat and seal correctly in the target pipe. Verify the pipe internal diameter against this figure before purchase. The minimum diameter of 3.8 inches defines the lower sealing limit.

How it compares

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

Price $21.99
Cheaper than about 62% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameCherne Industries
Model name271683
Product typeDrain Components

Questions about this item

Will the 4 in mechanical plug hold back 15 ft of water head overnight?

It is rated for 15 ft of head so it will hold that pressure continuously.

Does the 271683 need any special tool to lock or remove it?

A padlock with a 3 1/2 in shackle secures the stainless steel handle; no other tool is required.

Can the 4 in plug seal a 3.8 in ID pipe?

Yes, the minimum pipe inside diameter is 3.8 in, so it will seal at that size.

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