The Sensus 143-08-021-00 Red Spring is a high-precision component engineered specifically for Sensus 143 series service regulators. As a veteran-grade gas regulator spring, it maintains critical outlet pressure control within the 3.5" to 6.35" water column (WC) range. Designed for RPC applications, this red coded spring provides the mechanical force necessary for consistent diaphragm modulation in residential and light commercial meter sets. The technical construction ensures stable performance even during high-demand cycles, preventing excessive droop in natural gas service or LP-gas systems. For contractors performing field pressure adjustments, this replacement regulator spring offers a reliable solution for recalibrating Model 143-80 units to meet specific jurisdictional utility standards or equipment manifold requirements. Its robust design is compatible with various orifice sizes, ensuring accurate gas pressure regulation across fluctuating inlet pressures. Key Benefits Precise Pressure Range: Calibrated specifically to provide an adjustable outlet range of 3.5" to 6.35" WC for optimized appliance combustion. Industry Standard Color Coding: The red color code allows for rapid visual identification during maintenance and audits, preventing installation errors. High Compatibility: Fully interchangeable within the Sensus 143-80 and 143-243 series regulator bodies. Superior Response: Engineered for low-friction operation to ensure smooth movement of the regulator diaphragm assembly. Common Questions What is the exact pressure range for the 143-08-021-00 red spring? This spring is rated for 3.5 inches to 6.35 inches water column, making it ideal for standard low-pressure gas delivery systems. Can I use this spring in any Sensus regulator? It is specifically designed for the Sensus 143 series, including the 143-80-1 and 143-80-2 models. Always verify the series on the regulator nameplate before installation. How do I adjust the outlet pressure once the spring is installed? After installing the spring into the regulator tower, use the adjustment screw to compress or decompress the spring while monitoring the downstream pressure with a calibrated manometer. 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.
