BASO H91DG-2C REVB Gas Valve

The BASO H91DG-2C REVB is a 24V automatic gas valve designed specifically for low-voltage control systems in commercial and industrial heating applications. Built for high-cycle reliability, this 1/2 inch NPT gas valve provides precise fuel flow control for pilot-driven burners. As the direct replacement for the H91DG-2, the REVB model features a prioritized modified electrical connection to ensure a more secure and stable terminal interface during high-vibration operation. This slow-opening gas valve design prevents hard ignitions and reduces stress on the heat exchanger. With a high-capacity gas flow rating, it is optimized for high-demand environments. Contractors should note the standard 1/2" NPT inlet/outlet ports and 750mV or 24VAC compatibility requirements during installation. This BASO replacement valve ensures the burner manifold maintains consistent pressure, preventing flame lift-off or inefficient combustion. Always verify valve wiring schematics when upgrading from the legacy H91DG-2 to ensure proper terminal alignment.

Key Benefits for Technicians

• Direct Replacement Logic: Specifically engineered to replace the H91DG-2 with an upgraded electrical interface for better field reliability.
• Slow-Opening Action: Smoothly transitions from closed to open to prevent explosive ignition or burner rollout.
• Technical Versatility: Dual-rated for Natural Gas and Liquid Propane (LP) applications with appropriate conversion kits.
• Rugged Aluminum Casting: Industrial-grade housing resists environmental corrosion and operational heat cycles.
• Precision Control: Maintains tight shut-off and consistent flow rates under varying line pressures.

Common Installation Questions

Is the H91DG-2C REVB a drop-in replacement for the older H91DG-2?
Yes, it is the direct functional successor. However, you must account for the modified electrical connection point. Check your lead lengths and terminal connectors to ensure they match the REVB configuration.

What is the maximum pressure rating for this Baso gas valve?
This valve is typically rated for a maximum pressure of 0.5 PSI (14" W.C.). Exceeding this pressure can damage the internal diaphragm and lead to component failure.

Can I use this gas valve for a millivolt system?
The H91DG-2C is designed for 24VAC control circuits. If you are working on a pure millivolt standing pilot system, verify the specific coil resistance requirements, as 24V coils will not pull in on millivolt power.

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.