Aperflux 101



The Aperflux 101 is a pilot-controlled pressure regulator for medium and high pressure. Aperflux is a "fail open" regulator i.e. it opens in following conditions:

  • If the  main diaphragm fails;
  • If the  pilot diaphragm/s fail;
  • If the  pilot seat valve fails;
  • If there is no feed  to the pilot loop.

These regulators are suitable for use with previously-filtered non-corrosive gases.


Design pressure up to 85 bar
Design temperature -10° +60° C (higher or lower temperatures on demand)
Minimum working differential pressure 1 bar (reccomended >2 bar)
Accuracy class up to 1
Closing pressure class SG up to 2,5
Flanging ANSI 300/600 RF o RTJ according to ANSI B16.5
Outlet pressure range of Wd 0.8-74 bar
Available size DN 2"-3"
Maximum working differential pressure 84,2
Range of inlet pressure bpu 1.8-85 bar

News and articles

26 September 2017

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

Technical Newsletter - Reflux 819 12 "

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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