Maxitrol R400Z-1/2-CSA Valve

The Maxitrol R400Z-1/2-CSA is a specialized zero governor gas regulator engineered for high-precision control in proportional air-gas mixing systems. This balanced valve regulator is a critical component for industrial burner applications, nozzle mixers, and pre-mixers where maintaining a constant atmospheric or sub-atmospheric pressure is essential. Designed with a 1/2" NPT connection, the R400Z serves as an adaptable gas pressure regulator capable of handling Natural, Manufactured, Mixed, LP, and LP gas-air mixtures. While it carries a CSA certification for inlet pressures up to 1/2 PSI, Maxitrol has tested this unit to perform reliably at 1 PSI maximum inlet pressure. Its balanced construction compensates for inlet pressure fluctuations, ensuring consistent performance that standard atmospheric regulators cannot match. For contractors installing combustion control systems, this model provides the necessary accuracy for stable flame modulation and efficient fuel-to-air ratios in commercial heating and process applications.

Key Benefits for Technicans

• Zero Governor Precision: Specifically designed to maintain a 1:1 ratio in mixing systems, ensuring stable outlet pressure even at low flows.
• Balanced Valve Design: Eliminates the effect of inlet pressure variations, providing superior regulation compared to unbalanced alternatives.
• Rugged Build Quality: Constructed for long-term reliability in demanding industrial gas burner environments.
• Multi-Gas Compatibility: Approved for use with a wide range of fuel gases, including LP and Natural Gas.
• CSA Certified Safety: Meets rigorous standards for indoor and outdoor installations in commercial gas trains.

Common Questions

What is the difference between the CSA rating and Maxitrol's 1 PSI test rating?
The 1/2 PSI rating is the official CSA certified limit for regulatory compliance. However, Maxitrol has verified through internal testing that the R400Z-1/2-CSA can safely handle up to 1 PSI max inlet pressure in specific industrial applications.

Can this regulator be used for high-pressure gas service?
No, this is a zero governor or atmospheric regulator. It is designed for low-pressure systems and mixing applications, not as a primary high-pressure reduction valve.

Is an external vent limiter available for this model?
The R400Z series typically requires proper venting according to local codes; verify specific requirements for "vent-limited" installations based on the mounting orientation and gas type being used.

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.