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SHAW PLUGS Wing-Nut Mechanical Expansion Plugs, 1 to 2 Inch

Shaw wing-nut mechanical expansion plugs minimise pressure from the fluid to permit change or expansion of a state from fluid to vapour. They are also used as low-pressure seals in circular openings.

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SHAW PLUGS 72003A
StyleModelNominal SizeMin. Dia.Max. DiameterMax. Back PressureMaterialTypePrice
A
72003		1 1/2"1.44"1.613"5 ft. of HeadNeoprene Rubber, Zinc Plated SteelWing-Nut£62.52
A
72005		2"1.93"2.162"5 ft. of HeadNeoprene Rubber, Zinc Plated SteelWing-Nut£66.69

Working Mechanism

  • The plug valve rotates between the closed and open positions to shield both seals from the flow channel.
  • To prevent wear or abrasion, there is no contact between the body and seals while the valve is open.
  • It expands onto the body seat when the valve is closed.

Features

  • Shaw mechanical expansion plugs (72003 & 72005 models) have a wing-nut for testing leaks and sealing off sections of pipelines.
  • They feature a zinc-plated steel body with neoprene rubber for superior strength & corrosion resistance.

Standards and Approvals

  • ISO 14001

Frequently Asked Questions

What is the maximum air pressure these plugs can handle?

They can handle a maximum air pressure of 10 psi.

What is the inside diameter of the holes of these plugs?

They have holes with diameters ranging from 1.44 inches to 2.14 inches.

How do you test a mechanical expansion plug / valve?

  • Raise the temperature of the sensing bulb for determining the activation of the expansion valve.
  • Alternatively, drop it in a cup of warm water for examining.

Where is a mechanical plug located?

It is located at the liquid line between the inlet and the condenser.

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