Maxitrol R500S-3/4-CSA Regulator

The Maxitrol R500S-3/4-CSA is a high-performance gas pressure regulator engineered for precision control in commercial and industrial combustion systems. Featuring a 3/4" NPT connection, this unit utilizes a double diaphragm balanced valve design to maintain a stable outlet pressure regardless of fluctuations in inlet pressure. It is CSA certified for a maximum inlet pressure of 1/2 PSI and an outlet range of 3-6" w.c., though it has been Maxitrol tested to handle up to 5 PSI max inlet pressure in specific applications. This regulator is essential for HVACR contractors installing high-efficiency boilers, furnaces, and water heaters where consistent gas flow control is non-negotiable. Its rugged construction ensures long-term reliability in demanding environments, making it a standard choice for gas appliance pressure regulation.

• Double Diaphragm Construction: Provides superior sensitivity and eliminates the need for external vent piping in various jurisdictions.
• Precise Pressure Regulation: Maintains consistent 3-6" water column output to ensure optimal burner performance and combustion efficiency.
• Multi-Positional Mounting: Designed for versatile installation in tight mechanical rooms without sacrificing internal valve accuracy.
• High Capacity Flow: Engineered to minimize pressure drop while supporting the high BTU demands of commercial grade equipment.

Can this regulator be used with Propane (LP) or only Natural Gas?
The R500S series is suitable for both Natural Gas and Liquid Propane, provided the internal spring is calibrated for the specific density and required outlet pressure of the fuel source.

What is the purpose of the balanced valve design?
The balanced valve design offsets the effect of inlet pressure changes on the seating force, allowing for extremely accurate regulation across the entire flow range.

Does the R500S require a vent protector for indoor use?
While the double diaphragm provides an extra layer of protection, local codes may still require a vent limiter or outdoor venting; always verify with local mechanical codes during installation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.