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Specialty Pipe > Specialty Pipe > Flashcards

Specialty Pipe Flashcards

1
Q

What chemical is added to resin to make it harden fiberglass

A

Catlyst

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2
Q

How is fiberglass pipe joined?

A

Butt and wrap

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3
Q

When are o ring and bell, and spigots allowed

A

Underground drainage

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4
Q

More or less support for fiberglass than steel?

A

Less support for fiberglass

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5
Q

Opperating range of fabricating fiberglass

A

70f to 90f

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6
Q

What type of copper tube can be used for gas piping?

A

L, K

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7
Q

What should medical gas be free of to avoid explosion or fire?

A

Oil or grease

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8
Q

When is flux permitted?

A

On disssimilar metals

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9
Q

What gas be present in medical gas piping when brazing

A

A inert gas nitrogen

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10
Q

What type of copper for 3” or larger?

A

Type k

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11
Q

Fitting in medical gas must be ?

A

Wrot copper pressure fittings
Brass bar stock and broze fittings
Be washed in a solution of trisodium phospate and hot water

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12
Q

Min size fitting that can be concealed when used in medical gas systems?

A

1/2”

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13
Q

Max spacing for 1/2 pipe

A

1.8 meters 6 feet

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14
Q

Max pressure test for a medical vacuum system?

A

415 kpa 60 psi

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15
Q

Lined piping If corrosion is expected what should the jacketing material be made of

A

304 or 316 stainless steel

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16
Q

All medical gas supplys have what in case or emergency?

A

Reserve tank

17
Q

Medical gas piping should be tested at?

A

1.5 times working pressure or 150psig for 24 hours

18
Q

Most common compresser?

A

Recipocating

19
Q

Where is compressed air stored?

A

Reveiver tank

20
Q

What controlls the cycle of a compresser? Cut in and cut out pressures?

A

Pressure switch

21
Q

Another name for compressed air system is?

A

Pneumatic system

22
Q

Whats the delta P in compressed air system

◇p?

A

15 psi

23
Q

What pressure are pressure relief valves set at?

A

10 psi above the cut out pressure setting

24
Q

What cools air between stages of a two stage compresser? How much does it cool the air

A

Pneumatic intercooler cools by 10F

25
Q

What is the purpose of oil lubricators when installed on a compressed air system?

A

To automatically lubricate pnuematic tools

26
Q

Diaphram compresser need?

A

Clean air

27
Q

Maximum allowable pressure drop in a system is?

A

5 psi!

28
Q

When is the dew point reached?

A

100% humididty

29
Q

What is a flow test mesuring accross the termial unit and its inlet connector and the flow charistics of terminal units.

A

Pressure drop

30
Q

When do you add pipe identification?

A

At the time of installation

And at ever shut off, service inlet, service outlet.

Specialty Pipe (1 decks)

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