The Richter GU/F Overflow Valve is DIN/ISO or ANSI/ISA-75.08.01.The KSEA/F series is a direct-acting, spring-loaded Overflow valve with a set pressure range of 0.1 to 13 bar, certified for liquids, c/w lift lever. Face-to-face according to DIN EN 558-1 and ISO 5752 series 1 or ANSI/ISA-75.08.01.