Busch Vane – Carbon Part# 722000242 – vacstellar

This Busch Carbon Vane  replacement (Part #722000242) is one of those critical parts. It’s not made from metal. It’s made from a special, high-grade carbon composite. This material is chosen because it’s strong, lightweight, and slides very smoothly with low friction.

Even though carbon is durable, it is a wear item. The constant sliding contact against the pump wall slowly wears the vane down. Over many hours of operation, vanes get shorter.

When vanes become too short, they can’t seal properly against the wall anymore. Air leaks past them. This is when you’ll notice your pump losing its strength. It might take longer to reach a vacuum, or it might not pull as hard as it used to.