Morrison Bros 178-1100 AC 3" Brass Body Iron Fill Cap Strainer Mesh and features a center post

and features a center post that allows an even distribution of force when coupling to the adaptor

Series    425

WARNING: This product contains lead

Maximum Operating Temperature (°F)    158

Not for use with gravity tanks

Morrison Bros 178-1100 AC 3" Brass Body Iron Fill Cap Strainer Mesh and features a center post3" 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.