Device which supplies a preset and constant “downstream” pressure value (within the intended operating limits) according to variations in the inlet pressure and/or the flow rate. The compensated obturator ensures precision when adjusting the outlet pressure even with high and sudden variations in the inlet pressure.

These regulators are used in both civil and industrial installations where natural gas, LPG or other non-corrosive gases (dry gases) are used. The FRG/2MBCL versions (COMPACT) are preferable for small applications (up to 25 m3/h).

Reference standards: EN 88-1 – EN 13611.

They can be equipped with the following safety devices and accessories according to the system requirements:

• downstream overpressure shut off device (OPSO): stops supply when the regulator outlet pressure exceeds the setting value of the device. The OPSO device is always present on these devices.
• downstream minimum pressure shut off device (UPSO): stops supply when the regulator outlet pressure drops below the setting value of the device. It also intervenes in the event of an upstream power failure. They can also be supplied without the UPSO device.
• relief valve: discharges small gas flows outwards if overpressure occurs downstream of the regulator. This discharge can be conveyed outwards if the installation is in a poorly ventilated environment. They can also be supplied without the relief valve.
• outlet pressure nipple.

In compliance with:

• ATEX Directive 2014/34/EU  –  II 2G – II 2D