The Richter MV/F Diaphragm Valve is ISO/DIN design, MVM/F is ASME design. The Richter MV/F & MVM/F series features a stainless steel upper with adjustable travel stop and stroke index, soft-sealing, gas-tight. MV/F Face-to-face according to DIN EN 558-1 and ISO 5752 series 1, MVM/F to to MSS SP-88. The MV/F & MVM/F are available manual or actuator operated.