A complete range of hydraulically operated rubber
ring valves is available.
The range includes low, medium and high pressure dredge valves, which
are all especially designed for the tough working conditions encountered
when mounted in suction and discharge pipe lines of dredges.
The low-pressure dredge valve, type HRA, is used at a max. delta p of 6
The valves, provided with wear resistant replaceable slide sealing rings
and divided with an upper and lower casing for easy maintenance, can
usually be delivered from stock.
Of course class approval of for instance Lloyd's or Bureau Veritas can
The main construction details are as follows :