P143 | Pressure Regulator
BelGAS Regulators
The BelGAS P143 Pressure Regulator is a spring-loaded, self-operating regulator designed for accurate gas pressure control in commercial, residential, and light industrial applications. Built with an integrated internal relief valve, the P143 provides reliable overpressure protection while maintaining stable downstream pressure.
Designed for use with natural gas, air, propane, and other general-purpose gases, the P143 delivers consistent performance across varying operating conditions. Its compact and durable construction makes it well suited for burners, unit heaters, and gas distribution systems where dependable regulation is essential.
The P143 is available in both standard and Low Pressure Cut-Off (LPCO) configurations, allowing it to automatically shut off flow in low-pressure conditions to protect downstream equipment. With multiple spring ranges, body sizes, and orifice options, the regulator can be configured to meet a wide range of system requirements.
Typical Applications:
Burners, unit heaters, rooftop HVAC systems, generators, small boilers, natural gas systems, propane systems
Key Features
- Spring-loaded, self-operating pressure regulator
- Integrated internal relief valve for overpressure protection
- Optional Low Pressure Cut-Off (LPCO) configuration
- Supports natural gas, propane, air, and general-purpose gases
- Compact design for commercial and light industrial installations
- Multiple port sizes from 3/4″ to 1-1/4″ NPT
- Wide range of spring options from inches of water column to 6 PSIG
- Maximum inlet pressure up to 125 PSIG depending on orifice
- Temperature range from -20°F to 150°F
- Durable construction with iron or aluminum body options
- Stainless steel and plated internal components for longevity
- Multiple orifice sizes for precise flow control
PERFORMANCE ADVANTAGES
Why the P143 Performs Where It Counts
BUILT-IN OVERPRESSURE PROTECTION
Internal relief valve helps protect downstream equipment by safely venting excess pressure during upset conditions.
ENHANCED SAFETY WITH LPCO OPTION
Low Pressure Cut-Off configuration automatically shuts off flow when system pressure drops below set limits, protecting equipment and improving system safety.
CONSISTENT AND ACCURATE REGULATION
Spring-loaded diaphragm design delivers stable outlet pressure across changing flow and inlet conditions.
FLEXIBLE CONFIGURATION FOR APPLICATIONS
Multiple body sizes, spring ranges, and orifice options allow the regulator to be tailored for a wide range of gas control applications.