Spears - Spears PVC Spring Check Valve 1.5" S1580-15FSR SR FIPT Threaded #SPRS158015FSR
Amazon.com: Sanpaint 1.5 Inch PVC Bulkhead Fitting for Water Barrel, Water Tank, Rain Barrels,NPT1.5 female thread (1-4/5 inch I.D.) PVC : Industrial & Scientific