Oatey 39019 Sure-Vent 2-inch ABS Adapter Bulk Pack

20DFU AIR ADMITTNCE VLVComplies to ASSE Standard 1050 and 1051. For use as a secondary vent. – One size approved to handle up to 3 vent pipe. – Opens/closes as needed by building s plumbing system. – Complies to ANSI/ASSE 1051 A&BAdapter allows solvent welding to 1 1/2-Inch or 2-Inch Sch. 40 PVC pipe or threads into 2-Inch FIP fitting – For use as a secondary vent – Each valve individually tested