HF AI Filters Cardridge



CARTRIDGE filters designed in accordance with the provisions of DIN 3386 standards can be used with  all types of natural gas, LPG or non-corrosive gases.

These filters are widely used to protect  control devices, pressure regulators, meters and on systems that require a high degree of filtration.

The high filtration capacity of the cartridges and their broad surface allow separation of both dust and solid particles, reducing maintenance times for  equipment installed downstream.


Max. allowable pressure 10 bar
Max. working pressure Pu max 10 bar
Threaded series connections UNI-ISO 7/1
Flanged series connections EN 1092
Working temperature (max) -20 °C +80 °C

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A brief presentation of our modern plant in Desenzano del Garda

A brief presentation of our modern plant in Desenzano del Garda, where our gas pressure regulators are designed, manufactured, tested and shipped around the world.

03 August 2017

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Reflux 819 12” - Our biggest pilot regulator


Pietro Fiorentini inc.

With each installation created by Pietro Florentini, we increase our experience in the use of new technologies and are improving, which allows us to look to the future with confidence.

We constantly improve our quality and competitiveness, taking into account the highest requirements of our customers.

Our company is a leader in the creation of high-tech equipment and services for the transportation and use of natural gas, which allows us to direct our research to solve all kinds of problems.

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