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NEW Nilfisk Hot Pressure WashersPressure WashersMachine Parts by BrandPumps & SparesPopular High Pressure HosesHose ReelsNozzlesPressure Washer TriggersUnloader ValvesInterpump Service KitsPre-spray kits for applying cleaning chemicals at mains tap pressure before washing. The kit listed is a tap pressure pre-spray chemical injection kit with a 10m hose and a brass injector. Check your tap connection and chemical dilution before use.