Fca Original LPG Pressure Regulator

The LPG reducer OE 50531691 è is a component of the LPG fuel system that lowers the gas pressure from that of the tank (typically 8–12 bar) to a stable value (around 1–1,2 bar) useful for gas phase injectors. Made of aluminum, it integrates:

• Balanced membrane and piston for precise pressure regulation
• Anti-freeze valve to protect at low temperatures
• Standard connections for gas supply, cooling water, and output to injectors
• Integrated solenoid valve for the’automatic opening/closing of the gas flow

The reducer weighs approximately 1,7–2 kg and supports single point or sequential LPG autogas systems.

Functionalityà

The LPG reducer 50531691 has two main functions:

• Pressure reduction from the tank to the controlled pressure useful for the engine
• Gas flow control via solenoid valve, controlled by the LPG control unit during starting, operation, and shutdown

The stabilityà of pressure ensures efficient combustion, well-calibrated gas ramps, and consistent engine performance.

Vehicle applications

ALFA ROMEO

• Giulietta

FIAT

• 500
• Panda
• Panda
• Panda Cassone
• Panda Van
• Punto
• Punto Cassone

LANCIA

• Delta
• Lancia Musa
• Ypsilon

DIPA recommends to always check the compatibilityà of the spare part before’purchase

Typical defects

• Freezing of the membrane if not washed with coolant from the cooling circuit
• Leakage or overheating due to damaged gaskets or internal corrosion
• Stuck or oxidized solenoid valve → gas not delivered
• Incorrect internal lubrication → play and pressure fluctuations
• Obstruction from impuritiesà in the fittings or poor filter → unstable pressure and irregular operation

Conclusions

DIPA offers a wide range of spare parts: from original ones to aftermarket parts selected from the best manufacturers on the market. Not only that: it has refurbished components with performance equal to new, which allows for savings in replacement and contributes to the protection of the’environment thanks to the’circular economy. If the spare part that suits you is not è available, don't worry: DIPA canò refurbish “on demand” your part, restoring its full functionalityà and safety in a short time.