Description
The Maxitrol M611R-3/4 is a precision-engineered modulating gas valve designed specifically for direct fired, negative pressure burner applications. Featuring a 3/4″ NPT connection and a maximum inlet pressure of 1/2 PSI, this valve delivers reliable, proportional gas flow control to match the exact heating demands of the system — improving efficiency and extending equipment life.
Low Fire By-Pass Adjustment
The M611R-3/4 includes a conveniently located low fire by-pass adjustment on the right side of the valve body, allowing technicians to fine-tune minimum gas flow during commissioning and maintenance. This feature ensures stable burner operation at low fire conditions and smooth modulation across the full firing range.
Key Features
- 3/4″ NPT pipe connections for straightforward installation
- Designed for direct fired (negative pressure) burner systems
- Maximum inlet pressure: 1/2 PSI
- Modulating operation for precise, demand-matched gas flow control
- Low fire by-pass adjustment located on the right side of the valve
- Durable construction built to Maxitrol’s commercial-grade standards
Application
The M611R-3/4 is ideal for use in make-up air units, direct-fired heating systems, and other commercial or industrial burner applications operating under negative pressure conditions. Its modulating design supports energy-efficient operation by continuously adjusting gas flow to match the heating load, reducing fuel consumption and wear on system components.
Why Choose Maxitrol
Maxitrol is a trusted name in gas pressure regulation and modulating valve technology, with decades of experience supplying the HVAC and combustion industries. The M611R series reflects their commitment to precision, reliability, and ease of field adjustment.
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