2″ FNPT External Tank Port Part No: 500227 Material: Stainless Steel Dimensions: N/A Weight (approx.): 1.3 Case Quantity: N/A List Price: N/A Stock: In stock Description2" FNPT Tank Port for use with 500226 Diffuser Categories Tank Fittings for Poly Tanks Download Part Drawing For use when adding 2″ FNPT ports into a water tank with a 500226 internal tank diffuser. Requires 500223 gasket.