Bellows cup with 3/8" female pipe connection.  The fitting is secured with a hex keyed male bolt from the underside.  This makes replacement of the cup simple and cost effective. 

PKJG-T

Bellows cup with a "T" slot connection for quick changes.  This is a 3 piece fitting assembly that includes a cap and a hex keyed male bolt.  This connector is available with a built in safety check system to minimize vacuum loss when needed.  This makes replacement of the cup simple and cost effective.

Bellows cup with a male thread connection.  Metric or pipe threads are available upon request.  This is a simple one piece fitting with a hex key making replacement easy and cost effective.

Bellows cup with a one piece female push on pipe connection.  This connector is available with a built in safety check system to minimize vacuum loss when needed.