P5350 / P5351 | Pressure Reducing Regulators
BelGAS CP
The BelGAS CP P5350 and P5351 are pilot-operated pressure reducing regulators designed to maintain consistent downstream pressure in gas and air systems. Featuring an integrally mounted pilot, these regulators use upstream gas as the control medium to deliver stable, accurate pressure reduction across varying flow conditions.
The P5350 operates by sensing downstream pressure and modulating valve position to maintain the desired set point. When downstream pressure drops below the set point, the pilot opens and allows upstream pressure beneath the diaphragm, lifting the valve and increasing flow. Once the downstream pressure returns to set point, the pilot closes and vents actuation pressure, allowing the valve to close and stabilize the system.
The P5351 functions identically but is designed for non-vent applications. Instead of venting actuation gas to atmosphere, the signal gas is routed downstream back into the system, making it ideal for enclosed environments or applications where emissions must be minimized.
Built for demanding oil and gas environments, both models offer a 300 PSIG design pressure, temperature ranges from -20°F to 400°F depending on elastomer selection, and Class VI bubble-tight shutoff. Available in 2″ and 3″ sizes with NPT or flanged connections, the P5350 and P5351 provide flexible, high-performance pressure control for critical process systems.
Key Features
- ANSI Class VI bubble-tight shutoff
- Temperature range from -20°F to 400°F (depending on elastomer)
- 300 PSIG design pressure
- Integrally mounted pilot for precise control
- Maintains constant downstream pressure
- Pilot-operated pressure reducing regulator design
- Available in 2″ and 3″ sizes
- Female NPT or Class 150 RF flanged connections available
- Full port and reduced port configurations available
- Stainless steel internal components and fittings
- Ductile iron body and housing construction
- NACE MR0175 compliant for sour service
- Intermittent vent (non-bleed) operation
- Non-vent configuration available (P5351)
- Pressure ranges: 5–125 PSI or 15–285 PSI
PERFORMANCE ADVANTAGES
Why the P5300 P5301 Performs Where It Counts
Stable Downstream Pressure Control
The pilot-operated design continuously monitors downstream conditions and adjusts valve position in real time, ensuring consistent pressure delivery to critical equipment.
Emissions Control with Non-Vent Option
The P5351 non-vent configuration routes actuation gas back into the system instead of venting to atmosphere, making it ideal for enclosed installations or environmentally sensitive applications.
High Capacity, Responsive Flow
Engineered for efficient flow and quick response, the P5350/P5351 handles changing demand conditions while maintaining tight pressure control across the system.
Built for Oil & Gas Environments
With NACE-compliant materials, stainless steel internals, and rugged ductile iron construction, these regulators are designed to perform reliably in corrosive and high-pressure field conditions.