Order your Schedule 80 Bulkhead Fittings today from CIS. You'll save with our low prices. Give us a call for your quote! We have all sizes, including this 4" PVC Tank Adapter with EPDM gasket. Ends are fipt x fipt. , Size: 4" , Material: PVC, Gasket: EPDM, End Type: Fipt x Fipt, Max Pressure: 150 psi