Used approximately 30 gallon stainless steel jacketed mix tank. Internal rated atmospheric. Dimple Jacket on side and bottom rated 190 PSI @ 400 degrees F. Dished bottom. Flat hinged top. Center bottom outlet. Lightning air operated clamp on mixer model XIP50A. Shaft and 3 blade prop. Vessel built by Newark Welding. SN A5231-B. NB 1541. built 2003. On 3 legs.