Device which supplies a preset and constant “downstream” pressure value (within the intended operating limits) when the inlet pressure and/or the flow rate changes.

It is fitted with:

• a spring to adjust the outlet pressure;
• safety membrane (with some exceptions);
• output pressure test nipple (with some exceptions) to control the outlet pressure (P2). On some models the pressure test nipple is also present on the input;

It can also be supplied with a built-in filtering element (FRG/2MT models).
90° connections available.

Maximum pressure/operating pressure range:

• 100 mbar (version A)
• 100-200 mbar (version B)
• 200-300 mbar (version C)
• 300-400 mbar (version D)
• 400-500 mbar (version E)

Reference standards: EN 88-1 – EN 13611.

In compliance with:

• Regulation (EU) 2016/426 (Appliances burning gaseous fuels)