BASO H91MA-4C REVB Gas Valve

The BASO H91MA-4C REVB is a heavy-duty, 1-inch NPT gas valve designed for high-capacity industrial and commercial thermal applications. Rated for up to 505,000 BTUH, this 120V solenoid gas valve provides reliable flow control for natural gas or LP systems with a maximum pressure rating of 0.5 PSI (1/2 lb). As the direct engineering replacement for the legacy H91MA-4 model, it ensures seamless integration into existing manifolds without requiring extensive piping modifications. The normally closed operation ensures safety-shutoff functionality, making it a critical component for large-scale boilers, furnaces, and ovens. Built with a rugged aluminum body and high-temperature internal seals, the H91MA-4C REVB is engineered to withstand the demanding duty cycles of mechanical rooms. Technicians should verify electrical lead connections and manifold pressure during installation to ensure optimal combustion efficiency and system reliability.

• High-Capacity Throughput: Supports 505,000 BTUH, making it suitable for large commercial heating equipment.
• Direct Retrofit: Replaces the older H91MA-4 series with identical footprint and electrical specifications.
• Versatile Mounting: Designed for multi-positional installation in high-output 120-volt gas train configurations.
• Robust Construction: Reliable magnetic solenoid actuator provides consistent opening and tight shut-off under pressure.

• Is this valve compatible with Propane? Yes, this dual-fuel gas valve is rated for both Natural Gas and LP applications, provided the regulator settings match.
• What replaces the H91MA-4? The H91MA-4C REVB is the official manufacturer-designated supersession for the H91MA-4.
• Can this be used on low-voltage systems? No, this is a 120VAC line voltage valve; using it with 24V or 750mV circuits will result in failure.

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.