21721JD00B Coolant Reservoir Expansion Overflow Tank Compatible With Nissan Qashqai Dualis J10 2007 2008 2009 2010 2011-2014

Constant pressure function: keep the pressure in the system stable and improve the pumping capacity of the pump. Liquid level height: the expansion tank cannot be fully filled, and the liquid level height cannot be higher than the upper limit of the expansion tank. When the whole vehicle is started in a large cycle, the temperature of the coolant in the cooling system rises and the volume expands, and the excess coolant will enter the expansion tank through the overflow pipe for storage. When the engine coolant temperature rises, its volume expands. When it expands to a certain extent, the pressure regulating valve located in the expansion tank cover will open, so that part of the coolant can flow out of the cooling system to achieve the purpose of pressure relief and avoid excessive system pressure. When the water loss pressure decreases, the gas pressure in the expansion tank is greater than the water pressure. At this time, the gas expansion will squeeze out the water in the air bag to replenish the system, reducing the pressure relief times of the safety valve and the water replenishment times of the automatic water replenishment valve, and preventing the system pressure from dropping too sharply.

Brand: ‎EAQPA Item Weight: ‎1.76 ounces Package Dimensions: ‎1.18 x 0.79 x 0.39 inches Item model number: ‎ChunZhiMaoYiXiaoDian Manufacturer Part Number: ‎ChunZhiMaoYiXiaoDian ASIN: B0DRCV5F1D Date First Available: December 24, 2024