G Clean AP31024D High-Pressure Detergent Injector Lightweight and compact for all your cleaning needs Injects G-Clean pre-pump to spray up to 4000 PSI. Model AUN31024D was a package put together that contains model AP31024B and AGPWC02 Conditions pump internals for improved pump life Includes 1 puck with 3 G-Clean dissolvable detergent pouches Allows detergent to spray with all nozzles