Mini Power Pack Standard "UPW-STD" attacks PT 1/4 "G - Motor 12V DC - 1800W with relay and thermal protection - Pump 1P2cc - Relief Valve - Adjustable Maximum pressure Valve - Predisposition for pressure switch 1/8" G - Steel tank 23 lt. (Mounting brackets on the tank) - Horizontal mounting "OR" - Headset motor protection.