MADAS Gas Pressure Regulator / Slam Shut Off Valve

Energy Combustion, Importer and Supplier of Madas brand components in India.The Madas RG (Pressure Regulator) and MVB (Slam-Shut Valve) are complementary devices often used together in gas trains to ensure stable delivery and safety. While the RG series maintains a constant downstream pressure, the MVB series acts as a "safety sentinel" that triggers a hard shutdown if pressures go out of bounds. 1. Madas RG Series Data Sheet (Regulators) The RG series is characterized by a "compensated obturator" which ensures that the outlet pressure remains stable even if the inlet pressure or flow rate fluctuates sharply. Technical Features Media: Natural gas, LPG, and non-aggressive dry gases. Ambient Temp (Ts): -15°C to+60°C. Inlet Pressure (P1): From 500 mbar up to 5 bar (model dependent). Accuracy Class (AC): 10-15%. Lock-up Class (SG): +30. Filtration: None (The RG is the regulator-only version; see the FRG for the filter-integrated version). Core RG Models Model P1​ Range Standard Features Connection Sizes RG/2MT 500 mbar Compact; for small users. DN 15 – 25 RG/2M 500 mbar Safety membrane; compensation. DN 15 – 150 RG/2MC 0.5 to 2 bar High precision; compensated. DN 15 – 150 RG/2MB 0.5 to 5 bar Integrated OPSO/UPSO/Relief. DN 15 – 100 2. Madas MVB Series Data Sheet (Slam-Shut Valves) The MVB series is a safety device that automatically shuts off the gas flow. Unlike a regulator, it has two states: Fully Open (normal operation) or Tripped/Closed (after a fault). Technical Features Function: OPSO (Over Pressure) or UPSO (Under Pressure). Response Time: < 1 second. Reset Type: Manual only. You cannot reset an MVB until the pressure has returned to normal and the cause is identified. Standard Set Range: 30-450mbar (adjustable). Maximum Pressure (P{max}): 1bar or 6 bar. MVB Model Variants Model Trigger Condition Safety Goal MVB/1 MAX P2 Set Point Protects downstream equipment from overpressure. MVB/1 MIN P2 Set Point Protects against line breaks or upstream gas failure. 3. Comparison & Integration In a standard industrial gas train, these components are installed in a specific sequence to protect the system: Filter (FM): Removes debris. Slam-Shut (MVB): Protects against regulator failure. Regulator (RG): Drops the pressure to the burner's requirement. Solenoid Valve (EVP): For operational on/off control. Installation Guidelines Orientation: Preferred horizontal with the spring tower/lever facing upwards. Venting: For high-pressure models, the relief valve (if present) may need a vent pipe to the outdoors. Sizing: Always size based on flow capacity (Q), not just pipe diameter. An oversized regulator can cause "hunting" (unstable pressure).