Utica-Dunkirk 550003355 Steam Gauge

For service technicians and mechanical contractors maintaining commercial or residential boiler systems, the Utica-Dunkirk 550003355 Steam Gauge is the required OEM replacement component for ensuring accurate pressure monitoring. This 0–30 PSI boiler pressure gauge features a high-visibility dial face and robust internal movement designed specifically to handle the thermal cycling and rapid pressure fluctuations inherent in steam applications. As a direct-fit replacement, it eliminates the calibration drift often seen with generic gauges, providing the precision needed to keep Utica PSB-series and Dunkirk steam boilers operating within manufacturer-specified safety limits. This gauge is critical for diagnosing manifold issues, verifying pressure limit switch operation, and performing routine system commissioning. Installing a genuine Utica-Dunkirk 550003355 gauge ensures that the monitoring hardware matches the original engineering specifications for pipe connection and vibration resistance.

Key Benefits for Professional Installation

• Precision Pressure Monitoring: Provides a calibrated 0–30 PSI range for accurate detection of low-pressure steam levels and over-pressurization events.
• OEM System Compatibility: Specifically engineered for PSB-3D through PSB-9DP boiler models, ensuring correct thread matching and depth.
• Industrial-Grade Construction: Built with a heavy-duty housing and clear lens to resist yellowing and cracking in high-heat mechanical rooms.
• Enhanced System Visibility: The high-contrast dial enables quick visual checks during seasonal maintenance or emergency troubleshooting.

Common Questions About the 550003355 Steam Gauge

Is this gauge compatible with Dunkirk PSB gas-fired steam boilers?
Yes, the 550003355 is the authorized OEM replacement gauge for specific Dunkirk PSB-series models, including the PSB-3D, PSB-5D, and up to the PSB-9D/DP configurations.

What is the typical connection size for this replacement boiler gauge?
This 0–30 PSI gauge typically features a standard NPT bottom connection designed to thread directly into the boiler's siphon or mounting pipe; however, always verify with your specific model's parts manual for port clearance.

Can I use this gauge on a hot water (hydronic) system?
No, this gauge is specifically calibrated and constructed for steam pressure monitoring. It should not be used in hydronic systems where the pressure and flow characteristics differ from low-pressure steam applications.

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.