84.131—Supplied-air respirators; required components.
(a)
Each supplied-air respirator described in § 84.130 shall, where its design requires, contain the following component parts:
(1)
Facepiece, hood, or helmet;
(2)
Air supply valve, orifice, or demand or pressure-demand regulator;
(3)
Hand operated or motor driven air blower;
(5)
Detachable couplings;
(6)
Flexible breathing tube; and
(b)
The component parts of each supplied-air respirator shall meet the minimum construction requirements set forth in subpart G of this part.