What is 'air vessel' 🧑‍🔧

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A short answer to this question is…

An enclosed volume of air which uses the compressibility of air to minimize water hammer. Also: An enclosed chamber using the compressibility of air to promote a more uniform flow of water in a piping system.

The ‘air vessel’, in a reciprocating pump, is a cast iron closed chamber having an opening at its base.

These are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.

Let’s start by reviewing a few questions people ask:

Air vessel

What is the purpose of using air vessel in a pump...

The vessels are used for the following purposes: (a) To get continuous supply of liquid at a uniform rate. (b) To save the power required to drive the pump. This is due to the fact that by using air vessel, the acceleration and friction heads are reduced.

What is an air vessel in a reciprocating pump...

The air vessel, in a reciprocating pump, is a cast iron closed chamber having an opening at its base. These are fitted to the suction pipe and delivery pipe close to the cylinder of the pump.

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