West Warwick Welding, National Board Certified ion exchange tanks rated at 100 psi @ 100F. Board number 7050. The inlet and outlet are 2 inch pad flange fittings with butterfly valves located in the upper and lower side sheet. Internal distribution consists of a 2 inch Johnson Weld screen pipe on service inlet and outlet. There is a 4 inch sight window in the upper side sheet and each tank is also equipped with 1-1/2 inch resin inlet/outlet located in the top and bottom domes controlled by stainless steel ball valves. Each tank is skid mounted for easy mobility using a fork truck.