Maxitrol R400S-1/2 Gas Pressure Regulator BTU - 1/2 300000

The Maxitrol R400S-1/2 is a 1/2-inch gas pressure regulator designed for residential and light commercial applications requiring up to 300,000 BTU capacity. This line pressure regulator provides reliable, consistent gas pressure control for heating appliances, water heaters, boilers, and other gas-fired equipment.

Key Features:

• 1/2-inch NPT inlet and outlet connections for standard gas line integration
• 300,000 BTU maximum capacity suitable for mid-size appliances
• Comes standard with factory-installed spring for common outlet pressure ranges
• Compatible with R400B10 replacement spring for alternative pressure settings
• Durable brass body construction for long service life
• Compact design allows installation in tight spaces

The R400 series regulators are field-proven for consistent performance in HVAC and appliance applications. The regulator maintains steady downstream pressure despite variations in upstream supply pressure or flow demand. Installation requires standard pipe thread connections and should be performed by qualified gas technicians in accordance with local codes.