73 SERIES,Website:http://www.ehhydraulics.com, HYDRAULIC QUICK COUPLING (STAINLESS STEEL 316) ISO-7241-A, POPPET VALVEArt ... series couplings are used in a wide range of hydraulic applications including construction equipment, manufacturing machinery, and in ... machinery applications include hydraulic fluid, chemicals and gas lines for paper mills, steel production, and many varieties of plant ...