BASO H91DG-12C REVB Gas Valve

The BASO H91DG-12C REVB Gas Valve is a heavy-duty, 2-wire electrically operated shut-off valve designed for precise gas flow regulation in high-demand heating applications. This 1/2" NPT automatic gas valve serves as the direct H91DG-12 replacement, featuring an updated electrical connection modification—typically involving 30-inch leads or a conduit DIN connection—to ensure secure integration with modern control boards. Engineered for a 25V AC signal from a thermostat or primary controller, it handles Natural Gas and LP applications with a high capacity of up to 240,000 BTU/hr. As a veteran-grade HVACR gas control component, it is rated for a maximum inlet pressure of 0.5 psi and maintains operational integrity across a wide ambient temperature range of -40°F to 175°F. Whether you are servicing commercial cooking equipment, industrial furnaces, or large-scale boilers, the BASOTROL H91 series provides the reliability required for intermittent pilot or main burner shut-off cycles without compromising safety or line pressure stability.

• Universal Compatibility: Designed for Natural Gas and Liquid Propane (LP) mixtures, making it a versatile pick for diverse service calls.
• High-Flow Capacity: Rated at 240,000 BTU/hr to support light commercial and residential gas-fired appliances.
• Robust Construction: Features a durable brass body and a proven magnetic operator for long-cycle life in demanding environments.
• Technical Compliance: Meets UL Recognized and CSA Certified standards for safety and industrial regulation adherence.
• Installation Flexibility: Rated for multi-position mounting with 1/2-inch NPT inlet and outlet ports for standard manifold threading.

Is the H91DG-12C REVB a drop-in replacement for the older H91DG-12?
Yes, it is the designated direct replacement. Note that there is a modification on the electrical connection, usually involving the configuration of the lead wires or conduit hub, so verify your wiring harness before installation.

What is the maximum operating pressure for this Basotrol valve?
The valve is rated for a maximum inlet pressure of 0.5 psi (14 inches W.C.). Exceeding this pressure can damage the internal diaphragm and magnetic operator.

Does this valve require a specific transformer?
For this 25V low-voltage valve, you must use an NEC Class 2 transformer. Constant voltage outside the specified range can lead to coil failure or "chattering" during operation.

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.