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Mechanical Blocking Plugs

Available181 products
Mechanical blocking plugs provide a seal inside or at the end of a pipe to block flow and allow for pressure testing, maintenance, or to prevent unwanted material from entering the pipeline. A manual closure mechanism squeezes two plates together to compress and expand a rubber seal that presses against the internal walls of the pipe. They are primarily used in drain, waste, and vent (DWV) systems.

Hex-Nut Closure Blocking Plugs

Hex-Nut Closure Blocking Plugs
Hex-nut blocking plugs have a closure mechanism that expands and tightens the plug with a hex-nut driver.

Hex Nut Closure For: Inside Pipe

Galvanized Steel Plate

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Hex Nut Closure For: End of Pipe

Zinc-Plated Steel Plate

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ABS Plate

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Extended Hex Nut Closure For: End of Pipe

Stainless Steel Plate

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Hex-Nut Closure Plugs with Vent

Hex-Nut Closure Plugs with Vent

These blocking plugs have a vent to allow pressure to be released before removing the plug. They install with a hex-nut closure mechanism that expands and tightens the plug with a hex-nut driver.

For: End of Pipe

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Wing-Nut Closure Blocking Plugs

Wing-Nut Closure Blocking Plugs
These blocking plugs have a wide, wing-nut closure mechanism for easy installation without tools. Tightening the wing-nut by hand expands and seals the plug against the pipe's internal walls.

For: End of Pipe

Galvanized Steel Plate

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Zinc-Plated Steel Plate

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Stainless Steel Plate

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ABS Plate

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For: Inside Pipe

Galvanized Steel Plate

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ABS Plate

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T-Handle Closure Blocking Plugs

T-Handle Closure Blocking Plugs
These blocking plugs have a T-handle closure mechanism for easy installation without tools. Tightening the T-handle by hand expands and seals the plug against the pipe's internal walls.

For: End of Pipe

Stainless Steel Plate

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Zinc-Plated Steel Plate

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For: Inside Pipe

Aluminum Plate

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Snap-Handle Closure Blocking Plugs

Snap-Handle Closure Blocking Plugs
Snap-handle blocking plugs can be sealed quickly by hand with a closure mechanism that expands and tightens the plug by pushing the handle in a down position.

For: End of Pipe

Stainless Steel Plate

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Zinc-Plated Steel Plate

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Lockable-Handle Blocking Plugs

Lockable-Handle Blocking Plugs
These blocking plugs have a lockable handle to prevent tampering and are designed for Schedule 40-sized pipe in monitor wells. They are resistant to petrochemicals and are used in oil refining applications for plugging and opening monitor wells to test the quality of groundwater.

For: End of Pipe

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Raised-Square Blocking Plugs

Raised-Square Blocking Plugs
Raised-square blocking plugs are tightened by hand, or with an adjustable wrench for larger plugs. The raised square can be tapped to provide access for testing, or to add a cleanout lid to give a finished look and prevent tripping. These blocking plugs are used for testing water and air in plumbing systems.

For: Inside Pipe

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Long-Reach Cleanout Blocking Plugs

Long-Reach Cleanout Blocking Plugs
These long-reach blocking plugs have an extended handle for inserting into the cleanout opening and plugging the flow inside the pipe without the use of tools. They are used to test the stack vent, or plumbing vent, in the system and prevent backsplash by allowing for a gradual release of the plug.

For: Inside Pipe

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Cleanout Plugs for Damaged Threads

Cleanout Plugs for Damaged Threads
These mechanical blocking plugs seal damaged threads on a cleanout pipe. They have a rubber O-ring seal that compresses into the pipe beyond the threading to ensure a watertight seal. The plug is expanded and tightened with a hex key wrench.

For: End of Pipe

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Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order.