Innovations

PROTEGO® devices are designed with process safety as the primary objective.  Our standard and custom-made solutions comply with current national and international guidelines.

A Family Business with a tradition for innovation, becomes the global market leader.


1929
Dr. Robert Leinemann patents the world’s first detonation arrester.

1954
Robert Leinemann establishes Braunschweiger Flammenfilter.

1955
Develops the world’s first tank vent with integrated flame arrester, rated for endurance burning.

1977
Develops its own research/testing center for flame arresters, up to 12” in size.

1998
Receives ATEX certification for the manufacture of flame arresters.

2000
Manufactures the broadest range of type approved flame arresters globally.

2005
Developed first static type, endurance burning rated flame arrester both ethanol and ethanol based fuels.

2006
World’s first endurance burning rated arrester for hydrogen.

2008
World’s first in line detonation arrester type tested and approved for carbon disulphide.

2012
World’s largest in-line detonation arrester approved for Explosion group IIA (NEC group D) – DN 1000 (40”) flange connection!

2013
World's largest in line deflagration arrester approved for Explosion group IIA (NEC group D) – DN 1000 (40”) flange connection!

2015
World’s first in-line detonation flame arrester for H2/O2 mixtures for higher pressure

2016
World’s first in-line liquid detonation flame arrester for higher temperatures

2017
Market launch of the world’s highest flow capacity pilot operated valves

2018
Market launch of PROTEGO® Ex-U, the first controlled in-line deflagration flame arrester