Pietro Fiorentini Terval/A Regulator

Terval is pilot-controlled regulator for medium and low pressure suitable for use with previously filtered non corrosive gases.
This regulator is designed in such a way that on only one body the below listed devices are installed:

• Main pressure regulator
• Emergency regulator "monitor"
• Slam shut valve

Two versions are available:

• TERVAL main regulator is fail to open type while the monitor are fail to close type;
• TERVAL R boths main regulator and monitor are fail to close type.