Modine 5H0547510045 Main Orifice

The Modine 5H0547510045 is a precision-engineered LP gas main orifice designed to maintain exact fuel-to-air ratios in high-output heating systems. As a veteran-grade liquid propane burner orifice, this component is critical for technicians performing LP gas conversions or replacing fouled Modine burner parts. This specific model serves as the direct replacement for 5H54751-45, ensuring a seamless fit without the need for manifold modifications in the field. Built to withstand the thermal stress of heavy-duty industrial and commercial use, it provides the consistent gas flow regulation required for Modine unit heaters like the PD50, PDP100, and PV50 series. By utilizing genuine OEM Modine parts, you ensure that the heater operates at its rated 10" W.C. manifold pressure, preventing soot accumulation and ensuring clean combustion for your clients. Whether you are servicing a Modine propane heater or conducting a seasonal tune-up, this orifice provides the reliable HVAC fuel metering necessary for optimal thermal efficiency.

• Universal Compatibility: Engineered as a high-precision 5H54751-45 replacement for various Modine gas-fired unit heaters.
• Optimized LP Performance: Specifically calibrated for Liquid Propane (LP) operation, ensuring correct BTU output at standard manifold pressures.
• OEM Durable Build: Machined to exacting standards to resist corrosion and thermal expansion, maintaining orifice drill size integrity over time.
• Direct Fitment: Reduces labor time during gas valve conversion or maintenance by providing a drop-in solution for the manifold assembly.

• What units is this orifice compatible with? This part fits a wide range of Modine unit heaters, including the PD50, PDP50, PDP100, PV50, and PV100 models.
• Is this suitable for high-altitude applications? This orifice is typically rated for standard elevations (0-2000 ft); for high altitude propane conversion, verify specific drill size requirements for your local elevation.
• Can I use this for a Natural Gas to LP conversion? Yes, this is a core component for Modine LP conversion kits, though it must be used in conjunction with the proper regulator spring and labels for a code-compliant transition.

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.