Turn a General Pump into a sewer jetting machine the inexpensive way! Create flow pulsations on demand to improve nozzle movement and cleaning power in sewer cleaning applications. Simple operation allows both full-flow and pulsation modes Large, easy to grasp handle Designed and made in the USA Easy installation, replace middle inlet valve cap and valve. Technical Notes Fits the following General Pumps: EZ2536E EZ2536S EZ2542E EZ2542S EZ2545E EZ2545S EZ2555E EZ2555S EZ3035G EZ3035S EZ3040G EZ3040S EZ3045G