Sensus 143-16-021-08 Cadmium Spring

Standardize your gas pressure regulation for high-capacity applications with the Sensus 143-16-021-08 Cadmium Spring. Engineered for field reliability, this critical component provides the precise loading force required for Sensus 243-8, 243-12, 121, and 122 series regulators. Featuring a cadmium-plated steel construction, this spring is designed to deliver a low coefficient of friction for smooth valve travel and exceptional resistance to environmental corrosion. When installed in 243-8-2 (IRV) models, it facilitates an outlet pressure range of 3 to 5 psi, while in standard 243-12 and 122-12 series, it achieves a 1.5 to 3 psi range. For 243-8HP applications, it supports settings up to 6.5 psi. Technical professionals rely on this OEM Sensus spring to maintain tight lock-up performance and stable downstream pressure under fluctuating inlet conditions. The 143-16-021-08 ensures consistent gas regulator tension, optimizing burner efficiency and safety across industrial gas measurement setups.

• Broad Compatibility: Drop-in replacement for Sensus 243, 121, and 122 series industrial and combustion regulators.
• Corrosion Resistance: Cadmium-plated finish protects against moisture and harsh industrial atmospheres to prevent spring fatigue.
• Optimized Performance: Facilitates accurate pressure regulation between 1.5 and 6.5 psi depending on the regulator body and diaphragm size.
• Friction Reduction: Plating design ensures the spring guide and stem move without binding, reducing hysteresis in the control loop.

What is the specific pressure range for the Cadmium spring in a 243-8 regulator?
In a Sensus 243-8-2 (internal relief valve) model, the 143-16-021-08 spring typically handles a 3 to 5 psi outlet range. For the 243-8HP model, it can reach 3 to 6.5 psi.

Can I use this spring in Sensus 121 and 122 combustion regulators?
Yes, this cadmium spring is a standard calibration component for the 1" through 2-1/2" Model 121 and 122 series, typically providing the 1.5 to 3 psi or 3 to 10 psi range based on the diaphragm diameter.

Why is the cadmium plating important for gas regulation?
The cadmium layer acts as a lubricant, ensuring the main regulator spring responds instantly to pressure drops without mechanical sticking, which is vital for snap-acting loads.

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.