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3B SCIENTIFIC® PHYSICS
Instruction Sheet
6/03 ALF
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The water jet pump is well suited for experiments in a
low or coarse vacuum, in particular for introductory
experiments in vacuum physics e.g. the Magdeburg
hemispheres, density of air, buoyancy in air, boiling at
reduced pressure, sound propagation in air/vacuum
etc.
1. Safety instructions
• Before the water jet pump is put into operation
check for damage and tight fit of seals (washers).
• When connecting the pump to the water tap do
not use force while tightening the valve nut.
2. Description, technical data
The dismountable water jet pump consists of a plastic
tube, in whose upper end 2 different connecting sleeves
can be screwed in for connection to the water tap. The
hose nipple located on the side is used to attach the
experiment device. An integrated sleeve located in the
pump under the air inlet serves as a non-return valve
to counteract any water backlash.
Connection sleeves:
Valve nut R 3/4" for water tap with R 1/2"
Valve nut R 1/2" for water tap with R 3/8"
Suction capacity at a water pressure of 3 bar: 250 l/h
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com • Technical amendments are possible
U16050 Water jet pump
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2
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Connection sleeve
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Water jet pump
3
Sleeve
4
Valve nut
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Washers
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Hose nipple
Final total pressure at a water
temperature of 15°C:
Minimum water pressure required: 2 bar
Pump-out time for 5 l container:
Length:
24 cm
Weight:
50 g
Material:
plastic
2.1 Scope of supply
1 Water-jet pump
2 Connection sleeves and valve nuts
2 Washers between the connection sleeves and the
water tap
1 Washer between the connection sleeve and the jet
nozzle
1 Sleeve (non-return valve)
3. Operation
• Before connecting the pump to the water tap check
seals (washers) for leakage.
• Connect the water jet pump to the water tap.
• Establish a connection to the experiment device or
the receptacle.
• Turn the water tap on full.
Additionally required:
Vacuum tube e.g. U10140
®
approx. 15 mbar
6 up to 10 min
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