Thanks for our your question Dan.
Our technician recommends using a Shurflo pump for a drainless option on an ice maker. Here's a link to the Shurflo pumps and replacement cartridges we offer:
http://restaurant-supplies.etundra....If you're looking to match up a pump to a particular ice maker please give a member of our Tundra Restaurant Supply team at 1-888-388-6372. We'd be happy to talk through some specifics.