Maxitrol R8110-2042 Spring

The Maxitrol R8110-2042 is a heavy-duty black spring engineered for precise pressure regulation in high-demand gas systems. Specifically designed for use with Maxitrol 210D and 325-7A series regulators, this component allows for an outlet pressure range of 20-42" w.c. (Water Column). As a veteran technician knows, maintaining the correct spring tension is critical for ensuring stable gas flow and preventing hunt or chatter in large-scale residential, commercial, and industrial applications. This spring features a 4-5/16" length and a 7/8" ID, providing the necessary mechanical force to handle variable inlet pressures while maintaining a consistent set point. Its durable construction is optimized for the straight-thru-flow design of the 325 series or the balanced valve design of the 210 series, ensuring the regulator delivers positive dead-end lock-up and high-capacity performance. When retrofitting a gas pressure regulator for higher pressure requirements, the R8110-2042 provides a reliable, field-tested solution for contractors managing HVACR systems.

• Technical Compatibility: Drop-in replacement for Maxitrol RV81, 210D, and 325-7A series gas regulators.
• Enhanced Pressure Range: Extends the regulator’s capabilities to a 20-42" WC discharge range, ideal for specialized high-pressure appliance requirements.
• Industrial Strength: Manufactured from high-grade steel to resist fatigue and maintain calibration over long-term service cycles.
• Consistent Calibration: Designed to provide linear tension for accurate pressure control from full flow down to pilot flow levels.

Is this spring compatible with the 325-3 or 325-5 series?
No, the R8110-2042 is specifically sized for the larger 325-7 series and 210D bodies. Using this spring in smaller regulator bodies will cause improper seating and potential over-pressure conditions.

Can I use the black spring for LP (Propane) applications?
Yes, this spring is suitable for use with natural gas, LP gas, and mixed gas systems, provided the regulator manifold is rated for the resulting 20-42" WC pressure output.

Does this spring require a specific orientation during installation?
While the spring itself is omnidirectional, it must be seated properly within the stack of the Maxitrol 210D or 325-7A to ensure the adjustment screw applies even pressure across the diaphragm plate.

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.