Description ANSI RF Flanged Ends, 1-Piece 316 Stainless Steel Unibody, Standard-Port, Class 150 (150#), Molecularly Enhanced (PTFE) Teflon Seals and Seats. API-607 4th Edition "Fire Safe" Full Compliance. Click Here for Product Specifications Please allow 3 days for processing & packing of flanged valves. Most "stocked" flanged valves are not eligible for our "volume discounts".