The SCN is a compact safety device (SAV) which quickly intercepts gas flow whenever the pressure under monitoring reaches a pre-set limits, or whenever manually required by operator on site or through a remote command (optional device).

SCN is a slam-shut valve with self-operated actuation and manual resetting, it is an ideal product for distribution networks and industrial and chemical engineering applications.

SCN is suitable for natural gas and all non-corrosive gaseous media. Its 'top entry' design makes it easy to maintain without removing the body from the pipeline.

Main features

  • Intervention for overpressure and/or underpressure;
  • Manual push-button control at installation point;
  • 3 way solenoid valve for remote control (available on request);
  • Manual re-setting;
  • Internal by-pass for pressure equalization before resetting
  • Possible installation in any position although installation on horizontal pipes is recommended.



Design pressure up to 18.9 bar (275,5 psi)
Design temperature -20 °C÷ +60 °C
Ambient temperature -20 °C÷ +60 °C
Accuracy class 5%
Flanging class ANSI 150 - RF or FF according to ANSI16.5 and PN16 according to ISO 7005
Available size DN 1" - 1"1/4 - 1"1/2 - 2" - 2"1/2 - 3" - 4"- 6"- 8"

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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