Modine 5H0547510021 Orifice R-407C Enhanced System Reliability: Durable diaphragm

Enhanced System Reliability: Durable diaphragm and terminal construction reduce electrical resistance and prevent false system lockouts

The 318827 O-ring is specifically engineered to withstand the thermal cycling and chemical treatments found in commercial and residential steam boiler systems

The Honeywell ST9120C4054 fan control provides a 5-second post-purge and incorporates fixed cool fan-off delays to ensure complete thermal exchange

Environmental Protection: TEAO enclosure prevents dust and moisture ingress

a 440V rated capacitor is a suitable upgrade for a 370V application as it offers a higher dielectric strength

Modine 5H0547510021 Orifice R-407C Enhanced System Reliability: Durable diaphragmThe 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