Normally expansion tank is made by semi-transparent materials, such as plastic. The reason why use this kind material is that we can easily observed the liquid level directly through the box instead of opening the cap.
The operating principle of expansion tank is that, when people run cars, the temperature of the coolant circulating through the water jackets naturally increases which will increase pressure in the cooling system. When the pressure builds to a high enough point, the radiator cap allows that pressure to escape into the coolant reservoir through a small hose, called an overflow hose connected by the neck of the radiator to the expansion tank. Most of the coolant that is forced into the expansion tank returns to the radiator naturally after a few hours or when the engine is cold.
Without expansion tank, cooling systems would explode under pressure or the coolant would be forced from the overflow tube on the radiator and leak onto the road. It is advisable to check expansion tank regularly.
We can provide all kinds of expansion tank and brake fluid tanks with high quality and reasonable price. As we all know, expansion tank is a vital component in our car`s cooling system.
Expansion Tank,Reservoir Expansion Tank,Expansion Water Tank,Radiator Expansion Tank,Coolant Expansion Tank,Brake Fluid Tanks NINGBO DGOFEN AUTO TRADE CO., LTD , https://www.dgofen.com
On the morning of June 8th, 2011, leaders of the Land Mounting Division of the PLA General Armament Department and the Military Transportation Institute of the General Logistics Department of the People's Liberation Army visited the Fast Group.
At the symposium, the leaders of the army were briefed on the achievements made by Fast, relying on scientific and technological advancement and independent innovation, in product innovation and R&D, manufacturing equipment upgrade, development resource integration, and international strategic cooperation. In the development of innovation, Fast attaches great importance to the innovative research and development of military vehicle accessory products, keeps a close eye on the world's advanced level, and constantly launches its own innovative technologies, unique technologies and leading technologies to comprehensively improve the quality performance and technological content of heavy-duty automotive transmission products. With the latest products, best quality and best service, we can provide the latest optimized configuration for the upgrading of our military vehicles. 
In recent years, Fast has fully implemented the strategy of science and technology, high-tech enterprises, and innovative talents. It has continuously improved its independent innovation capability and scientific and technological R&D level. It has achieved light weight switching and new product innovation in the research and development of heavy-duty transmissions such as AMT and AT. With all-round development, an innovative R&D system integrating production, education, and research has been formed, which has created a new situation in specialized production, automation, high-end, and diversified development of heavy-duty transmission products.
The army leaders fully affirmed and highly praised Fast's outstanding achievements in reform, development, innovation, development, and scientific development, as well as its positive contribution in promoting the upgrading of military vehicle equipment, and wished that Fast would do more to strengthen it. Large self-owned brands have made new and greater contributions to the upgrading of national defense equipment and local economic and social development.
After the symposium, the leaders of the army visited the Fast Drive Automotive Engineering Research Institute, product showroom, test center, test track, and 330,000 workshops.
As engine coolant heats up, it expands. The coolant expansion tank provides additional storage for the expanding coolant and is commonly the location where coolant is added to the engine.