Sensus 143-16-021-11 Spring

The Sensus 143-16-021-11 Spring is a critical component for fine-tuning the outlet pressure of Sensus 243-12 gas regulators. This orange/black color-coded spring is specifically engineered to provide a calibrated pressure range of 10" to 18" w.c. (water column), ensuring precise downstream delivery in commercial and industrial combustion systems. Designed for a seamless fit within the 243-12 series, it allows technicians to convert or maintain regulator sets for boilers, furnaces, and large-scale HVAC units. Built with high-tensile materials, this replacement regulator spring offers long-term setpoint stability and resistance to fatigue, making it a reliable choice for natural gas service, LPG vapor, and other non-corrosive gas applications. When replacing or upgrading internal components, utilizing this OEM Sensus part ensures the union connection and diaphragm-case assembly operate within original specifications without compromising accuracy or pilot-loading performance.

• Specifically calibrated for high-capacity Sensus 243-12 series regulators to maintain consistent 10" to 18" w.c. outlet pressure.
• Orange/black color coding allows for rapid field identification, preventing installation errors during multi-stage pressure adjustments.
• Constructed from heavy-duty alloy to resist permanent set and maintain pressure accuracy across varying ambient temperatures from -20°F to 150°F.
• Facilitates direct-acting control for precision applications such as pressure factor measurement and fixed-factor billing.
• Fully compatible with interchangeable Sensus bodies, supporting rapid servicing in industrial meter sets and district regulator stations.

What is the specific pressure range for the 143-16-021-11 spring?
This spring is rated for an outlet pressure range of 10" to 18" w.c. when installed in a 243-12 model regulator.

Can this orange/black spring be used in the 243-8 model?
No, the 143-16-021-11 is specifically designed for the 12-inch diaphragm case of the 243-12 series. Using it in a 243-8 model will result in inaccurate pressure delivery and potential equipment damage.

How do I verify if this is the correct spring for my gas type?
While the spring material is suitable for natural gas, propane, and air, always verify your regulator’s orifice size and inlet pressure to ensure the 10-18" w.c. range meets your downstream requirements.

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.