PA law.
INFLATABLE
LIFE JACKETS
There are two types.
Both types use a small carbon
dioxide (CO2 )cylinder to inflate an air bladder.
Both types have a backup oral inflation tube,
better buoyancy than standard PFDs, and the
ability to turn an unconscious person face-up in
the water. Available varieties include “suspender”
types, fishing vests, belt pack vests and even
float coats and deck suits. They can be classified
as Type III or V PFDs.
1. Manually activated–requires the user to
pull a “rip cord” mechanism to puncture the CO2
cartridge, allowing it to inflate. These MUST BE
WORN at all times, or you must keep another
standard-type wearable device on board to comply
with the life jacket laws.
2. Automatically activated–inflates when
a water-soluble material dissolves and releases a
spring-trigger plunger, which punctures the CO2
cartridge, allowing it to inflate. These MUST BE
WORN at all times, or you must keep another
standard-type wearable device on board to comply
with the life jacket law.
https://www.fishandboat.com/Boat/Boa...evicesPFD.aspx