2 Eat 10 Flashcards

1
Q

A relief valve is normally

A

Closed

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2
Q

The point at which a relief valve first opens is called its _______ pressure

A

Cracking

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3
Q

A relief valve limits the ________ pressure un a hydraulic system

A

Maximum

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4
Q

The difference in pressure between the points where a relief valve first opens and passes full pump delivery is sometimes called

A

Override

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5
Q

When the chamber above the balanced piston of a relief valve is opened to tank, it is said to be

A

Vented

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6
Q

When a pressure reducing valve is vented its outlet pressure is at its ____________

A

Minimum pressure

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7
Q

Pressure reducing valves are always drained __________

A

Externally

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8
Q

If the vent connection of a relief valve is opened to tank, the pump is said to be

A

Unloaded

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9
Q

If operations take place in a certain order they are done in ________

A

Sequence

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10
Q

If a sequence valve is installed in a cylinder line it should contain a _________.

A

Check valve

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11
Q

A back pressure type valve is normally ________

A

Open

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12
Q

When used to support a loaf, the valve functions as a

A

Counter balance

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13
Q

If flow frim secondary to primary is required, the unloading valve control pressure should be ______ above the spring setting.

A

150 psi

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14
Q

Pressure in the outlet port of an internally drained sequence valve adds to the _______ setting

A

Spring

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15
Q

Pressure reducing valve with internal check valve permits _______ free flow

A

Reverse

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16
Q

When the unloading valve is ________ operated, the spring force and pressure in the primary port are independent of each other.

A

Remotely

17
Q

A break valve is used in the ______ line of a hydraulic motor

A

Exhaust

18
Q

A brake valve is used to prevent ________

A

Both a and c

Overspeeding/excessive pressure

19
Q

When a load is being accelerated, pressure is maximum at the motor _______.

A

Inlet

20
Q

A back pressur valve can also be used as an _______ valve.

A

Unloading