These pumps are constructed of FDA accepted materials and therefore can be specified in applications requiring FDA approval. The 316 Stainless Steel wetted construction has a 125 Ra finish for ease of cleaning. Teflon ® PTFE or Sani-Flex™ elastomers are available to meet abrasion, temperature, and chemical compatibility concerns. All air distribution systems listed on pages 12 and 13 can be specified based on the requirements of the application. The Pro-Flo™ pump models are depicted in the photo and the specifications chart (exception: W15 3" pump). Dimensional drawings and complete performance data are available in the Engineering, Operation, & Maintenance manual.