Dival 500



The DIVAL 500 series of spring loaded, diaphragm controlled balanced plug gas regulators are suitable for low, medium and high pressure.

Divals and shut-off device series regulators are supplied with internal sensing lines. Both the regulator and the shut-off device are preset for optional connection to an external sensing line by the customer.

They are widely used in both civil and industrial installations using Natural Gas, LPG and other non-corrosive gases.

The special regulator design combined with a balanced plug result in:

  • High flow rate coefficient,
  • High accuracy, even at maximum flow rates,
  • Reduced lock-up pressure zone and lock-up pressure,
  • Reduced response times,
  • No internal leakage at zero flow rate,
  • Fail open type,
  • Regular l maintenance without disassembling the body from the pipework,
  • Ability to retrofit the slam-shut OPSO/UPSO, (only LA model) without modifying the existing pipe.


Design pressure BP: 10 bar MP / TR: 20 bar
Design temperature -20°C +60°C
Accuracy class up to 10
Closing pressure class SG up to 10
Flanging see catalog
Outlet pressure range of Wd BP 13- 100 mbar MP 100 - 300 mbar TR 300 - 2500 mbar
Available size DN 1" - 1" 1/2
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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