Please select a product group.  RITAG products are designed for chemical plants, pharma- ceutical plants, power stations, refineries, shipbuilding, off- and on-shore facilities, building services engineering and for general plant engineering. They are, of course, available in all customary nominal dimensions and pressure ratings. All RITAG wafer type check valves are manufactured and labelled according to the Pressure Equipment Directive 97/23/EC.