Pietro Fiorentini Dival 500 Regulator

The Dival 500 series are spring loaded, diaphragm-controlled regulators that 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. 

They are widely used in both civil and industrial installations. 

The special regulator design combined with a balanced plug: 

  • 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 maintenance without disassembling the body from the pipework 

  • Ability to retrofit the slam-shut OPSO/UPSO without modifying the existing pipe.