Reflux 919



The Reflux 919 Control is a pneumatic control valve, specifically designed for use with  normal gas, commonly operated by a direct-acting type diaphragm actuator (mod. 200) or reverse acting type diaphragm actuator (mod. 300).

The control loop is 6-30 psig: other signals available on application

The absolute tight shut off is obtained by soft-seated patented Fiorentini design

  • Very high rangeability due to special plug guiding (1:500)
  • The actuator design has a special balanced valve plug for minimum actuator requirements
  • Maximum inlet pressure 85 bar
  • maximum pressure drop 83 bar
  • Nace MR 01/75 version available on request
  • Retrofitting capability by built-in special silencer and Fiorentini patented channel flow trim.

Pneumatic actuated control valve Pzul: up to 99,6 bar

Rangeability: 500:1
Sizes (DN): 1"-2"-3"-4"-6"-8"-10"
Flanges: ANSI 150/300/600 RF or RTJ
Options: direct-acting, reverse action; built-in silencer; pneumatic positioner, electropneu-matic positioner.
Built-in silencer.
Options: gas flow control application, liquid flow control application.
Sizes (DN): 1"-2"-3"-4"-6"-8"
Flanges: ANSI 150/300/600 RF or RTJ, PN 16 UNI/DIN
Options: built-in silencer.
Built-in silencer.

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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