... I. Piping systemWell designed in a vertical or horizontal way, with all connecting joints reliably fastened, well sealed to ... , bumper, separator, filter, heat exchanger, safety valve, one-way valve, gas pressure gauge, vacuum gauge, and freezer;L. ... Dust control: particulate diameter 20umM. Gas store volume: 1%N. Non malfunction continuing operation time: 1000h~5000hO. Noise: ≤75DbP. Power source: ...