[CHEM ENG] An auxiliary ram ext-ruder on blow molding equipment used to store melted material between deliveries.

[MECH ENG] A device, such as a bag containing pressurized gas, which acts upon hydraulic fluid in a vessel, discharging it rapidly to give high hydraulic power, after which the fluid is returned to the vessel which the use of low hydraulic power.

Definition 2: A device connected to a steam boiler to enable a uniform boiler output to meet an irregular steam demand.

Definition 3: A chamber for storing low-side liquid refrigerant in a refrigeration system, also known as surge drum, surge drum header.