en2015-08-18 17:38 PM CESThttp://inspire.ec.europa.eu/codelist/WaterAppurtenanceTypeValue/surgeReliefTank:1http://inspire.ec.europa.eu/codelist/WaterAppurtenanceTypeValue/surgeReliefTankSurge relief tank.A surge relief tank is a piece of equipment used to absorb pressure increases in the water system. Surge relief tanks provide a buffer against throttling within the system by accepting water into a tank through a pressure valve.