Modine 3H0325990002 Pilot Orifice

The Modine 3H0325990002 Natural Gas Pilot Orifice is the direct OEM replacement part for the legacy 3H32599-2 component. Engineered for precision and long-term reliability in specialized HVAC heating systems, this NG pilot orifice ensures a consistent fuel-to-air ratio required for stable pilot flame ignition and sensor feedback. As a critical component in the pilot assembly, it is designed to withstand the high-temperature environment of the burner box without throughput degradation, maintaining the strict manifold pressure requirements of your Modine unit.

For technicians performing furnace repair or seasonal maintenance on Modine unit heaters, using the genuine 3H0325990002 part is essential to maintain equipment certification and prevent nuisance lockouts. This orifice features a calibrated diameter specifically for natural gas (NG) applications, providing the exact BTU input needed to energize the thermocouple or flame sensor. Its robust construction resists clogging from gas-borne particulates, ensuring that the unit operates at peak thermal efficiency throughout the heating season.

• Direct OEM Match: Specifically replaces the Modine 3H32599-2 for a drop-in fit with zero modifications required.
• Optimized Gas Flow: Precision-machined for natural gas pilot burner assemblies to maintain flame stability.
• System Reliability: Minimizes ignition failures and pilot gas flow issues in commercial and residential heaters.
• Contaminant Resistance: Built from durable materials to reduce buildup and maintain the pilot orifice size specs over time.

Is the 3H0325990002 compatible with Propane (LP) units?
No, this specific orifice is calibrated exclusively for natural gas service. For Liquid Propane conversions, a different orifice size is required to match the higher energy density of LP fuel.

What are the symptoms of a clogged pilot orifice?
Common indicators include a weak/lazy pilot flame, a flame that yellow-tips, or the inability of the pilot to stay lit long enough to engage the main burner gas valve.

Does this part include the pilot line compression fitting?
This SKU is the orifice itself. Technicians should inspect the existing compression fittings and pilot tubing for leaks or damage during the replacement process.

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.