Check Valve Heavy-Duty Update Kit A two port valve, that normally allows fluid (liquid or gas) to flow through it in only one direction.
Robinair does not warrant any "RA" repair item not installed by an Authorized Service Center.

Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov