Profile: Progressive Engineering Ltd. specializes in designing, developing and manufacturing valves & ancillary fittings. We serve tank, transport, storage and process plant sectors. We also undertake the design and manufacture of special purpose machinery, engineering projects and subcontract machining. We produce a number of different types of manlid in cast or fabricated forms in different materials and with a variety of seal types. We develop self venting manhole closure unit range which vents off any tank pressure before opening. Our anti towaway safety devices are designed to protect tanks from the potential of towaway incidents. We avail many types of relief valves in a variety of materials and with different seals. Our relief valve range is developed for extremely corrosive cargoes such as hydrochloric acid where traditional materials of manufacture are of limited use.