Decompression Pump

This decompression pump is useful in demonstrating the power of atmospheric pressure during the creation of a partial vacuum in a plastic bottle. The pump is simply inserted into the bottle and its handle is repeatedly pulled up and pushed down to expel the air in the bottle.

Use in conjunction with the Cat. No. 45RM Rubber Mat Air Pressure Demonstration (Gompita-kun) to show just how strong atmospheric pressure can be!

Specifications:

• Size: 120 × 75mm
• Material: ABS resin
• Internal diameter of bottles that can be used: 18 – 20mm