Expansion tank

Our expansion tanks are designed and manufactured under both the Ad Merkblätter design code and ASME Section VIII, Division I U Stamp. The normal version of these tanks connects to the heat oil collection tank without pressurization. The volume of these expansion tanks depends on three factors: the type of heat transfer fluid, the temperature of the circuit and the total volume of the system. Consult our engineering department for proper sizing of the tank volume. Our tanks are provided with a level switch connected to the heater control cabinet which emits a general stop alarm when the level is insufficient. It also has a lateral magnetic sheet visual level easily visible from anywhere. These tanks also have all the associated instrumentation, valves and tubing and are therefore ready for assembly. In the absence of nitrogen pressurization, generally we recommend they are installed about 2 meters above the highest point of the facility. Pirobloc’s expansion tanks also have a safety valve for the discharge leading to the collection tank, a vacuum breaker valve and another drain valve. The volume of the expansion tank is based on the total volume of the heating oil circuit, working temperatures and the type of fluid used.