High Temperature Balanced Zero Regulators (BZR)

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The Selas BZR (Balanced Zero Regulator) is engineered for energy efficiency, reliability, and precision in gas flow control across various combustion systems. Featuring a robust, large diaphragm, this regulator operates seamlessly within a 650 to 18,100 SCFH flow range. These models are designed to function effectively in ambient temperatures up to 700°F.

How It Works

These zero pressure balanced regulators are used for precise control of heated gases or for equipment locations subjected to high ambient temperatures.

The BZR-300 series is designed for continuous operation up to 300°F and to resist corrosion from high sulfur or other corrosive gases.

The BZR-500 series is designed for continuous operation up to 500°F and to resist corrosion from high sulfur or other corrosive gases.

The BZR-700 series is designed for continuous operation up to 700°F and for flow ratio control of high-temperature vaporized fuels. Its construction features a stainless steel main and balancing diaphragm and stainless steel valve disc with high-temperature gasketing.

The high temerature BZR lineup duplicates the precise control characteristics of the standard BZR balanced regulators. They automatically adjust valve position to hold a desired precise outlet pressure. Slight variations in inlet pressure do not affect the performance.

Model Overviews

BZR-300

Designed for service in ambient temperatures up to 300°F (149°C).
Maximum inlet pressure: 2.0 psig
Eliminates need for remote location and compensation in reasonably high ambient temperature applications.

BZR-500

Designed for service in ambient temperatures up to 500°F (260°C).
Maximum inlet pressure: 5.0 psig
An extension part raises the main diaphragm assembly 12 inches above the valve body.

BZR-700