Modine 5H0547510021 Orifice

The Modine 5H0547510021 Orifice is a precision-engineered Natural Gas Main Orifice designed for consistent gas flow regulation in commercial and industrial Modine heating units. As a critical component in the burner manifold assembly, this orifice is calibrated to maintain the specific manifold pressure required for efficient combustion and clean flame characteristics. Built from high-grade, corrosion-resistant brass, it ensures long-term reliability in high-temperature environments. For veteran contractors, this is a direct Modine OEM replacement part, ensuring exact thread pitch and drill size compatibility for unit heaters and furnace sections. Proper orifice drill size and gas type matching are essential to prevent soot buildup or heat exchanger fatigue. This genuine Modine gas orifice serves as the primary metering device to deliver the rated BTU input for the appliance.

• Precise Flow Regulation: Ensures the correct air-to-fuel ratio for optimal thermal efficiency.
• OEM Compatibility: Guaranteed fit for Modine natural gas heating equipment, eliminating field modification risks.
• Refined Durability: Machined from heavy-duty brass to resist stripping and thermal degradation.
• Combustion Safety: Maintains stable burner performance and prevents hazardous under-firing or over-firing conditions.

Is the Modine 5H0547510021 compatible with Propane (LP) systems?
No, this specific part number is engineered strictly for Natural Gas Main Orifice applications. Utilizing it with Liquid Propane without a full conversion kit can lead to dangerous pressure imbalances.

Does this orifice require a licensed technician for installation?
Yes. HVAC orifice replacement involves working with combustible gas lines and requires precise manifold pressure adjustments using a manometer to meet manufacturer specifications.

How do I verify if this fits my Modine unit heater?
Cross-reference your unit's serial plate with the Modine 5H0547510021 part number or check the burner manifold specifications in the technical service manual.

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.