Pirelli LS 901

Database Italian Oxygen rebreathers

Pirelli LS901 a successor of the Pirelli G40

Pirelli LS901

ModelDateAuthor
LS9018-4-2003JW. Bech
ManufacturerPirelli
ModelLS901
Country of originItaly
Design Year1945?
Production years?The years known this model was produced
Breathing typePendulumDual hose or Pendulum
User groupMilitaryCivil / Military
Other name used for this model
Working PrincipleContstant flow adjustableConstantmass flow, Manual addition, Valve operated, On demand, Electronic
GasOxygen
Cylinder volume2 x 1,5 ltr
Max cylinder pressure150 bar?
Cylinder materialsteel
Loop volume16,7 liter
LongtypeSingleSingle/Dual
Scrubbersize
ScrubbertypeRadialAxial/Radial
Scrubber volume1700 cc
Factory adviced scrubber mediumSodaSorb
Divetime duration4 hoursLeaflet factory
Operating temperature
Magnetic signatureMagneticMagentic/
Nonmagentic
Weight on land
Weight in water
Factory advised maximum operating depth
ColorBlack
WornFrontFront/Back/Both
Mouthpiece styleWith ValveFixed/ with valve / with position to ambient air
Additional info 1
Additional info 2
Additional info 3
Infosource
Thanks to
Revision date30-03-2019

JW

Therebreathersite was founded by Jan Willem Bech in 1999. After a diving career of many years, he decided to start technical diving in 1999. He immediately noticed that at that time there was almost no website that contained the history of closed breathing systems. The start for the website led to a huge collection that offered about 1,300 pages of information until 2019. In 2019, a fresh start was made with the website now freely available online for everyone. Therebreathersite is a source of information for divers, researchers, technicians and students. I hope you enjoy browsing the content!