this brass-bodied valve is factory-set at 30 PSI to prevent over-pressurization in hydronic heating systems

maintaining the nitrogen or air cushion without frequent venting

allowing you to fine-tune the system's performance after installation

Improved Energy Efficiency: Maintains a consistent spark ignition gap

Optimized Performance: The 8

Berko 3900-2010-001 Motor 30067439-890 this brass-bodied valve is factory-setThe Berko 3900 2010 001 Motor is a high performance 240 277V replacement motor engineered for specific Berko and QMark electric unit heaters. Operating at 1550 RPM with a Clockwise (CW) rotation, this motor provides the necessary torque and airflow required for heavy duty commercial and industrial heating applications. Built to withstand the thermal demands of constant cycling, it features a rugged construction that ensures long term reliability in