- Trusted Seller Used Graham Corporation 18 sq. ft. Stainless Steel Plate Heat Exchanger- Manufacturer: Graham
 Used Graham Corporation 18 sq. ft. stainless steel plate heat exchanger. Model GP-161. S/N 09-73723-1. Rated 150 PSI @ 230 degrees F. Built 2009. FOB: Wilmington, NC Wilmington, NC

