Eastwood company has several models all good,depends on the size of your compressor CFMs . I bought a small pressure pot for 80 bucks a year ago it hold about 90 lb of sand I found that the best combination was either a 3/32 or 1/8 nozzle using a fine sand grade 30/20 I have used a 5/32 with course sand works OK. My compressor is small it takes forever. I sure don't have to worry about warping the 16 guage metal on my 52 1/2 as I'm around 70PSI most of the time. I've been almost a year blasting 4 or 5 hours per month still quite a bit to go. Northern has pressure pot for a resonable price #155341-1413 change to good dead man valve they have most of the nozzles you need. But the large dead man valve Item no# 22007 in eastwoods catalog then buy the nozzles to go with it (Northern has em). I made a sand strainer out of, screen door screen ty-wraped over the top of a five gallan plastic bucket with a hole on the side of the bucket so you can pour your recycled sand into the pressure pot. Its dirty messy time consuming but you come out with nice clean metal.

Rich