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A fitting Paige > Regulators > Flashcards

Regulators Flashcards

1
Q

What is a service regulator

A

Pressure regulator on the service line

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2
Q

What is the line pressure regulator

A

System regulator

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3
Q

What is the appliance regulator

A

Located on the valve train of an appliance

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4
Q

What does a direct operated reg have

A

Spring or weight
Measuring element
Restricting element

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5
Q

The amount of droop aloud

A

10 percent

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6
Q

How far open is an orifice when it hits critical flow

A

1/4

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7
Q

The larger the orifice is the higher the lock up pressure

A

True

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8
Q

What does a pitot tube do

A

Reduces droop
Tricks reg to respond dramatically
Boosts

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9
Q

What does a lever do

A

Keeps disc in a stable position
Increases force for lock up

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10
Q

Which regulator usually uses levers

A

Line regulator

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11
Q

Which regulator is single port or double port

A

Balances regulators

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12
Q

Where is the sensing line for a balances regulator

A

Bottom of diaphragm
Downstream

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13
Q

Where is the sensing line for a zero governor regulator

A

Top of regulator

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14
Q

Where does the sense line from the combustion air go on a proportional regulator

A

Top of the regulator

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15
Q

What is the purpose of connecting a sense line to the top of the regulator for the proportional regulator

A

To stop fluctuation

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16
Q

What will a reg do if debris is on the seal

A

Relief downstream
Will slam shut if it is too much

17
Q

How much less droop does a pilot operated regulator have

A

1-3 %

18
Q

What is amplification called

A

Gain

19
Q

Where should the sensing line be downstream on a two path control

A

4-10 pipe diameters on the top of the pipe

20
Q

Which has a slower reaction Two path or Unloaded control

A

Unloaded control

21
Q

Though the unloaded is more simple and inexpensive what are the downsides

A

Has a high differential reaction
slower than 2 pass
uses flexible membrane element to throttle flow

22
Q

Steps to select regulator

A

Measure inlet where regulator will be
Static pressure
Min inlet pressure
Max flow

23
Q

Which regulator is not recommended for high pressure
Direct operated
or pilot operated

A

Direct operated

24
Q

Body size should never be larger than pipe size
True or false

A

True

A fitting Paige (13 decks)

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