Double Sealing Stainless Radiator Cap Truck Generator Radiator Cap Water Tank Cover 0.5/0.9/1.1/1.3/1.5/2.0 Bar

1-Stainless material Radiator Caps 2-Double Rubber Sealing 3-Small/Medium/Large, Standard Size available 4-Please note Small size Caps fit Small Size Neck, if wanna necks pls turn to  click buy neck5-If customer wanna pressure value 1.3/1.5/2.0 Bar, These are available too. Welcome to contact us for customized value caps. Instruction of Choosing Radiator Caps 1. The numbers on the water tank cover refer to bar 0.5, 0.9, 1.1, 1.3, 1.5,2.0 etc., which are the pressure values inside the cooling system after the engine is warmed up; 2. When the pressure of the cooling system rises to this pressure value, the pressure valve of the water tank cover will relieve the pressure, allowing part of the high-temperature steam to enter the bottom of the cooling liquid of the auxiliary water tank through the side pipe of the water tank water inlet; 3. If the high-value water tank cover is replaced with a low-value water tank cover, the engine coolant will enter the auxiliary water tank in large quanti