Sensus 143-62-021-15 Red Spring

The Sensus 143-62-021-15 Red Spring is the professional choice for field technicians requiring precise pressure adjustments on Sensus 143-80 gas pressure regulators. Designed specifically for the 143 series domestic service regulators, this authentic OEM component calibrates the outlet pressure within the 3.5" to 6.5" WC range. Proper spring selection is critical for maintaining consistent downstream pressure, preventing appliance pilot outages, and ensuring safe lockout performance in residential and light commercial settings. This red color-coded spring is engineered for repeatable elasticity and high fatigue resistance under continuous cycles. When performing gas regulator maintenance or re-rating an existing 143-LP or 143-80-1 model, utilizing the correct Sensus 143 spring chart specifications ensures the diaphragm assembly operates as intended. This specific part, number 143-62-021-15, eliminates the guesswork often associated with universal aftermarket alternatives that can cause erratic pressure fluctuations or chatter in high-flow demand scenarios.

Key Benefits

• Precise Pressure Calibration: Specifically calibrated for an outlet range of 3.5 inches to 6.5 inches water column, meeting standard low-pressure requirements.
• Sensus OEM Reliability: Genuine Sensus 143 series replacement part ensures exact fitment and mechanical synchronization with the internal lever and orifice.
• Enhanced Setpoint Stability: Maintains a stable natural gas pressure regulator setpoint even during fluctuating inlet pressures or varying demand loads.
• Simplified Field Identification: Color-coded red for immediate identification during gas regulator spring replacement and system audits.

Common Questions

Can this spring be used in Sensus 143-8 regulators?
Yes, the Sensus 143-62-021-15 is compatible across several 143 series models, including the 143-80 and 143-8 variations, provided the desired outlet pressure falls within the 3.5" to 6.5" WC specification.

How do I identify the current spring installed in my regulator?
Sensus regulators utilize color coding for their springs. If your current spring is red and installed in a 143 series housing, it typically corresponds to this setpoint range. Always verify the part number 143-62-021-15 on your technical sheet before installation.

What happens if I need an outlet pressure higher than 6.5" WC?
If your application requires a higher setpoint, such as 10" WC or 1 PSI, you must swap to a different color-coded spring (such as blue or violet) specifically rated for that range. Operating a spring outside its rated water column range can lead to poor regulation and potential safety issues.

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.