... tube positive pressure air breathing apparatusPurposes of productMovable long-tube positive pressure air breathing apparatus is a kind of ... to work continuously.As the breathing equipment has tight structure, easy to operate, portable structure (convenient cart), ... valves, 1 reducer base, 1 reducer, 1 high pressure meter, 1 meduim connecting pipe, 1 quarter body, 1 medium pressure meter, 1 reel ...