Fluid Lines And Fittings Flashcards

1
Q

What are two types of fluid lines commonly found aircraft

A

Rigid metal lines and flexible hoses

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2
Q

When installing stainless steel tubing what type of fittings should be used

A

Stainless steel fittings

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3
Q

Describe the two type of flares commonly used on aircraft tubing

A

The single flare and double flare

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4
Q

How are standard AN type fittings identified

A

The color of the fitting and small shoulder between the thread and the flare

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5
Q

What are the names of the parts of a flareless tube fitting?

A

Nut and sleeve

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6
Q

What is the effect of a over-tightening a flare type fitting.

A

Sleeve will be pushed into the tube and weakening the tubing

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7
Q

How do you tell a flareless fitting from a flare-type fitting.

A

Flareless have a flare cone and no space between the threads and end of the fitting

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8
Q

Describe the method of classifying metal tube according to size

A

wall thickness and outside diameter.

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9
Q

When installing stainless steel tubing what type of fittings should be used

A

Stainless steel fittings

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10
Q

When routing a fluid line parallel to an electrical wire bundle, which should be on top?

A

The electrical wire bundle should be on top

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11
Q

Is the side of a flexible hose determined by its inside or it’s outside diameter?

A

By it’s inside diameter in 16ths of an inch

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12
Q

Is the size of a rigid or metal fluid line determined by its inside or it’s outside diameter?

A

Outside diameter and 16th of an inch and wall thickness is in 1000s of an inch

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13
Q

What precaution should be taken when routing fluid lines adjacent to electrical wiring?

A

Fluid lines should be below the electrical wires and 6 inches apart as and clamped to structure

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14
Q

Describe the operation for quickly disconnecting couplings.

A

Each half has a valve that is held open when coupled and is spring-loaded closed when disconnected

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15
Q

What are aircraft plumbing lines made of

A

Metal tubing and fittings or flexible hose

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16
Q

What is the purpose of the identification strip running along the length of the hose

A

Used to determine wether or not the hose was twisted during installation

17
Q

What are the purpose of using quick disconnect couplings in fluid systems

A

To prevent fluid loss or air getting in the system

18
Q

How much slack should be left In the hose when installing

A

5 to 8 % the length of the hose

19
Q

What are the 3 parts of a military standard flare less tube fitting

A

Body, sleeve and nut

20
Q

What precaution should be taken when debarring the cut end of a tube

A

Don’t crack the tube or reduce the wall thickness of the tube