A refuelling coupling having a shut off valve, the refuelling coupling comprising: • an annular member, • a fitting on the annular member complementary to a pressure refuelling nozzle, • a displaceable dry-break member in the coupling for normally sealing the coupling via a seal between the annular member and the dry-break member, the dry-break member being displaceable from its sealing position on connection of a pressure refuelling nozzle, and • a primary sleeve extending from the annular member to provide a pressure flow passage for receiving pressurised fuel with the dry-break member displaced into the upstream end of the pressure flow passage, the primary sleeve having: • peripheral openings at a downstream end of the sleeve for dispensing of the pressurised fuel flowing from the flow passage; the shut off valve comprising: • an annular seat carried on the primary sleeve on the upstream side of the openings, • an end cap of the sleeve having: • an inner sleeve extending back towards the annular member and defining with the primary sleeve an annular cylinder closed by the end cap, • an annular piston in the annular cylinder having: • one or more openings allowing passage of pressurised fuel from within the primary sleeve to the opposite side of the annular piston and • a formation complementary to the annular seat whereby pressurised fuel on the opposite side of the annular piston can co-operate with the annular seat and close the peripheral openings and • a float valve with at least one closable outlet in the end cap arranged to be closed for movement of the annular piston against the annular seat when refuelling is reaching completion to close flow communication from the pressure flow passage to the openings. • an annular member, • a fitting on the annular member complementary to a pressure refuelling nozzle, • a displaceable dry-break member in the coupling for normally sealing the coupling via a seal between the annular member and the dry-break member, the dry-break member being displaceable from its sealing position on connection of a pressure refuelling nozzle, and • a primary sleeve extending from the annular member to provide a pressure flow passage for receiving pressurised fuel with the dry-break member displaced into the upstream end of the pressure flow passage, the primary sleeve having: • peripheral openings at a downstream end of the sleeve for dispensing of the pressurised fuel flowing from the flow passage; the shut off valve comprising: • peripheral openings at a downstream end of the sleeve for dispensing of the pressurised fuel flowing from the flow passage; • an annular seat carried on the primary sleeve on the upstream side of the openings, • an end cap of the sleeve having: • an inner sleeve extending back towards the annular member and defining with the primary sleeve an annular cylinder closed by the end cap, • an inner sleeve extending back towards the annular member and defining with the primary sleeve an annular cylinder closed by the end cap, • an annular piston in the annular cylinder having: • one or more openings allowing passage of pressurised fuel from within the primary sleeve to the opposite side of the annular piston and • a formation complementary to the annular seat whereby pressurised fuel on the opposite side of the annular piston can co-operate with the annular seat and close the peripheral openings and • one or more openings allowing passage of pressurised fuel from within the primary sleeve to the opposite side of the annular piston and • a formation complementary to the annular seat whereby pressurised fuel on the opposite side of the annular piston can co-operate with the annular seat and close the peripheral openings and • a float valve with at least one closable outlet in the end cap arranged to be closed for movement of the annular piston against the annular seat when refuelling is reaching completion to close flow communication from the pressure flow passage to the openings.