Sensus 138-18-021-04 Spring This prevents common issues like

This prevents common issues like "lazy flames

but the technical specifications and components remain identical

High Thermal Stability: Engineered for high-temp boiler environments without losing elasticity or sealing properties

High-Dielectric Strength: Rated for 370 Volts AC to prevent premature breakdown during voltage spikes

making it an essential stocked item for commercial and residential steam or hot water maintenance

Sensus 138-18-021-04 Spring This prevents common issues likeThe Sensus 138 18 021 04 Grey Spring is a high performance calibration component engineered specifically for Sensus RPC regulators. This replacement gas regulator spring is designed to provide precise outlet pressure control within the 3 to 15 PSI range. Built for heavy duty commercial and industrial gas distribution applications, it ensures the stable modulating gas pressure required for high efficiency burners, boilers, and furnaces. In the field,