[Function] The vacuum coolant filling machine is used for vacuum pressure testing and vacuum coolant filling. Use workshop air to suck into the cooling system and create a vacuum, which then sucks the coolant into the radiator. Greatly reduces the time to fill the new coolant and effectively reduces the risk of engine overheating. [Speed] Equipped with EV15 vacuum generator and metal quick connector. The EV15 vacuum generator has a high negative pressure value, and the quick connector can help you quickly replace the antifreeze. Also equipped with PVC pipes and metal joints, the sealing performance is greatly improved. [Dual-scale pressure gauge] The pressure gauge adopts a dual-scale design, with simple and accurate readings. The measuring range is 30 ~ 0 inHg, -76 ~ 0 cmHg. The dual scale dial uses a plexiglass mirror. and is equipped with a rubber protective cover on the meter head. , anti-fall and anti-scratch, ensuring the safety of the watch head. 【Save Time】Eliminate tedious