1" IPS PVC Compression Coupling (White) - The Drainage Products Store
JONES STEPHENS 2-1/2 in. IPS Malleable Iron Compression Coupling, Long Pattern 6-3/4 in. Body Length for IPS & Schedule 40 Pipe Repair C11250 - The Home Depot
1-1/2″ IPS X 3″ Compression Coupling Brass – Law Supply, Inc.