Dival 507-512



DIVAL series gas pressure regulators are spring-loaded gas regulators with balanced plug, diaphragm command and contrast action by spring, suitable for low, medium and high pressures.

Divals and shut-off device series regulators are supplied with internal sensing lines. Both regulator and shut-off device are preset for connection to an external sensor line by the customer, related to flowrate diagram on next page.

They are widely used either in civil or industrial plants, using natural gas or LPG or non-corrosive gas. 

Thanks to the concept of balanced plug to achieve a:

  • High flow rate coefficient;
  • Highly accurate , even at maximum flow rates;
  • Reduced lock up pressure zone and lock up pressure;
  • Reduced response times;
  • No internal leakage at zero??i flow rate;
  • fail open type;
  • Regular  maintenance without disassembling the body from pipes;
  • possibility to incorporate the slam-shut (OPSO/UPSO) even on regulators already installed, without modifying the existing pipes.


Design pressure BP: 10 bar MP / TR: 20 bar
Design temperature -20°C +60°C
Accuracy class up to 5
Closing pressure class SG up to 5
Threaded connections see catalog
Outlet pressure range of Wd BP 11- 110 mbar MP 80 - 300 mbar TR 300 - 3000 mbar
Available size DN Dival 507 - 512 1"" - 1"" 1/2 Dival 520 - 522 2
Range of inlet pressure bpu BP: 0.5÷10 bar MP / TR: 0.5÷20 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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