| 摘要 |
A pump assembly (100) for use in a selective catalytic reduction system, the pump assembly comprising: a pump sub-assembly (12) defining a pump axis (A); and a housing sub-assembly (30) including a cavity (120) for receiving the pump sub-assembly and comprising an inlet port (52) for receiving a reagent for supply to the pump sub-assembly via a flow path (130, 132, 142); wherein at least one seal member (124, 126, 138) is provided to seal the pump sub-assembly within the housing sub-assembly, the seal member being provided in a groove (140) in an outer face of the pump sub-assembly, the seal member providing a fluid tight seal. |
