The Model K550 Surge Anticipating valve is indispensable for probecting pumps. pumpng equpment and allappkable p peines (rom dangerous pressure surges caused by rapid changes et flow vetodty wilhin a pipeline. When a power faiure lake place, the abrupt stopçmg of the pump can cause dangerous surges in the System whch could resUt in severe equipment damage. Power (aire to a pump wfl usualy resu* in a down su rge n pressure, (olowed by an up surge in pressure The surge control valve ope ns en the mitai low pressure wave. iJverting the returning high pressure wave (rom the System. In effect. the valve has antepated the returning high pressure wave and is open to dissipate the damage causing surge. The valve wil then dose dowty without generabng any further pressure surges.