Quick view Walchem E90364 Walchem VALVE, MULTIFUNCTION, 3/8 PC MSRP: £4,356.96 Multi-Function Valves Walchem’s Multi-Function Valves (MFV) provide anti-syphon, back pressure, bleed, drain and pressure relief for your 11, 16 and 21 size E class metering pumps. These valves will prevent syphoning when... MSRP: £4,356.96 Add to Cart The item has been added Add to Wish list Compare