A hydraulic ram valve assembly has a chamber (30) with an inlet port (31) for communicating with an elevated source of fluid and a waste port (33). A waste valve housing (35) extends upwardly from and communicates with the waste port (33). The waste valve housing (35) has an outlet (36) at an upper end thereof. A waste valve element (6) is disposed in the waste valve housing (35) between the waste port (33) and a first waste valve seat (37) defined by the waste valve housing outlet (36). A waste pipe (10) extends upwardly from and communicates with the waste valve housing outlet (35). A replaceable elongate member (7) is disposed in the waste pipe (10) and extends into the waste valve housing (35). The elongate member (7) is vertically displaceable within the waste pipe (10) independently of the waste valve element (6).
