Gas pressure regulators (inlet up to 2 bar and 0.5–5 bar) with OPSO/UPSO shut-off valve and relief valve, DN 15–150

Country: · Model: RG/2MC

Gas pressure regulators of two groups, with inlet pressure up to 2 bar and 0.5–5 bar, with connections from DN 15 to DN 150. They hold the set outlet pressure when the inlet pressure and flow vary. They are installed in burner gas trains and on the inlets of industrial and commercial consumers.

Group 1: inlet P1 ≤ 0.5; 0.5–1; 1–2 bar; DN 15 (1/2″) – DN 150 (6″)
Group 2: inlet P1 0.5–3 or 0.5–5 bar; DN 15–DN 100; increased outlet pressure
Types (group 1): regulator; with OPSO; with OPSO/UPSO/relief; with UPSO; zero-pressure and/or gas/air ratio
Types (group 2): with OPSO/UPSO/relief; with optional relief valve

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Technical specifications

Group 1	inlet P1 ≤ 0.5; 0.5–1; 1–2 bar; DN 15 (1/2″) – DN 150 (6″)
Group 2	inlet P1 0.5–3 or 0.5–5 bar; DN 15–DN 100; increased outlet pressure
Types (group 1)	regulator; with OPSO; with OPSO/UPSO/relief; with UPSO; zero-pressure and/or gas/air ratio
Types (group 2)	with OPSO/UPSO/relief; with optional relief valve
Explosion protection	versions for ATEX zones 1, 21, 2, 22
Models in the documentation	RG/2MC, RG/2MCS, RG/2MG, FRG/2MC (mentioned in installation diagrams)
Certification	module D under Regulation (EU) 2016/426 for regulators and filters

Specifications are taken from the manufacturer’s technical documentation. Updated 11/13/2026.

Description

Group 1 has an inlet pressure of up to 0.5 bar, 0.5–1 bar or 1–2 bar and connections from 1/2″ (DN 15) to 6″ (DN 150). It includes plain regulators, regulators with an OPSO shut-off valve (on pressure rise) or UPSO (on pressure drop), combined versions with a relief valve, and zero-pressure and gas/air ratio regulators for premix and modulating burners. Group 2, for an inlet of 0.5–3 or 0.5–5 bar and DN 15–100 (up to 4″), is designed for increased outlet pressure and is made with OPSO, UPSO and a relief valve, or with an optional relief valve. Versions for ATEX zones 1, 21, 2 and 22 exist for both groups. In the documentation diagrams the regulator is designated RG/2MC, RG/2MCS, RG/2MG or FRG/2MC (filter combined with regulator) and is placed in the gas train after the filter and before the automatic solenoid valves. The production of the regulators and filters is certified under module D of Regulation (EU) 2016/426.

How to choose

First determine the inlet pressure at the tie-in point, as the group depends on it. For an inlet up to 2 bar group 1 is used, and for 0.5–5 bar group 2 with higher outlet pressure. Then choose the protection (OPSO, UPSO, relief valve) and the diameter. Outlet pressure ranges and flow capacity should be checked in the catalog for the specific model, because the materials contain no detailed data sheets. Safety valves MVB/1 MAX or MVS/1 are selected separately to go with the regulator.

Request a price and lead time

Gas pressure regulators (inlet up to 2 bar and 0.5–5 bar) with OPSO/UPSO shut-off valve and relief valve, DN 15–150. We reply within one business day.