The Fig. 5060 Special Capacity Hydrotrol has been designed expressly for severe hydrostatic shock conditions that can occur in commercial laundry machines, bus washing stands and high capacity pumping systems. This unit will absorb the excessive surge pressures and eliminate the annoying and dangerous water hammer that results whenever a solenoid or quick closing valve is suddenly closed. Both the piping system and expensive equipment on the line are safeguarded against the damaging effects of the hydrostatic shock.