Vacuum Pumps

The purpose of a vacuum pump is to maintain a vacuum in the annular space, which helps to reduce vaporization of the cryogenic liquid.

• True

• False

The lowest possible pressure obtainable using a given vacuum pump, with the suction valve closed.

• Open End

• Closed End

• Dead End

• Low Point

What must the atmospheric pressure be less than when operating?

• 30

• 25

• 27

• 20

How long may a warm tank take to drop down to 200 microns?

• 48 hours

• 72 hours

• 24 hours

• 72 days

Closes when the pump motor turns off or during a power loss to prevent back leakage through the pump.

(SV-1)

• Gate Valve

• Globe Valve

• Relief Valve

• Solenoid Valve

Prevents toxic vapors from vacuum pump oil (Halovac 100) from entering the space.

• Lagging

• Overboard Piping

• Sideboard Discharge

• Solenoid Valve

What are the power requirements for a vacuum pump?

• 3/4 HP Motor

• 440VAC

• 3 Phase

• 60 Hz

• 50Hz

How many pints of LOX (Liquid Oxygen) compatible oil are required for lubrication?

• 1 pint

• 1 1/2 pint

• 1/3 pint

• 1 1/3 pint

What is the capacity of a KC-5 model?

• 8 CFM

• 5 CFM

• 15 CFM

• 12 CFM

What's the capacity of a KC-8 model pump?

• 8 CFM

• 5 CFM

• 15 CFM

• 12 CFM