Morrison Bros 178-1100 AC 3" Brass Body Iron Fill Cap

3" Brass Body, Iron Cap, Lockable Fill Cap Standard Features Lockable with a padlock Vapor tight when properly secured Construction Details Body: Brass (BB), Cap: Cast iron (IC) (powder coated black) Gasket: Buna-N Designed for tank filling applications where a tight fill connection is not required. Adaptor permanently threads onto riser pipe of fill nipple, cap threads onto adaptor.