It is time to replace an old 1,000 gallon low pressure NH3 receiver at our facility here in Oregon.

I am an operating engineer (as opposed to a smart engineer!) and have never been involved in the purchase or design of a system, so when I discovered that we really need to replace our old receiver... Well, there just isn't an ammonia receiver store.

To be honest, my ignorance is sometimes surprising even to me, but I thought buying a new receiver would be an easy thing, just like buying pipe or valves.

Where does one go to purchase a new 1,000 gallon low pressure NH3 receiver? Any suggestions?