After a year of development and testing I'm now able to offer a 3" and a 4" model. the 4" model is just the same as the regular floor model. With one exception the pump will return after each stroke. I also made a smaller version for the youth and ladies that are not strong enough to push down on the 4" model. The new pump come with a directional valve so air does not excape from the balloon on the return stroke.
Maintenance and care of your Spring Return pump.
The maintenance is the same at the manual pump. With the exception of the springs.
To replace the power bands cut your tubing to length and insert the stops by rolling the tubing back on itself. Fish the tubing through the holes of the cap than the post than the cap again insert the other stop.
