Chapter 1
Specifications and General Precautionary Safety Measures
8
SAFETY FIRS T
Edition 1 – December 2019
MSA G1 Classic Breathing Apparatus
General Description and Specifications of the G1 C
Cylinder
Component
Specification
Casing
Carbon wrap aluminium composite
Size
625 mm x 160 mm
Weight (total operational)
7.20 kg
Valve
90° assembly
Ratchet safety valve
Pressure
300 bar
Water capacity
6.8 litre
MSA G1 Classic BA
The MSA G1 C is a pressure-demand self-contained breathing apparatus. It operates
independently from the ambient air in atmospheres immediately dangerous to life or
health (IDLH).
Breathable air is supplied to the operator from a compressed air cylinder via a pressure
reducer, a demand valve and a full facemask. The exhalation air is released directly
into the atmosphere via a one-way exhalation valve
The specifications for the G1 C BA are summarised in this table.
Item
Specification
Make
MSA
Model
G1 Classic
Back plate weight
4.8 kg
Total weight (including mask)
5.46 kg
Fully operational weight (including
cylinder)
12.46 kg
Standards
NFPA, NIOSH, EN, British and Australian
Low pressure warning whistle
Operates at 55 ± 5 bar
Carry handle capacity
180 kg
