vacuum:0.065-0.08Mpa flow rate:25-30L/Min ... 12V,24V,36V,48V etc our electric cars braking power is made of mini oil-free vacuum pumps, pressure sensor, pressure controller ... , etc, it's used for electric cars, electric vans, electric tour bus and other ... volume:2L(stainless steel)voltage: 12V,24V,36V,48V etc electric brake vacuum pump