Sensus 143-16-511-09 Valve Assembly

The Sensus 143-16-511-09 Valve Assembly is a critical direct replacement component designed for the Sensus 143-80 service regulator series. Built to withstand the demands of residential and light commercial gas regulation, this assembly features a Buna-N valve pad, or nitrile, which provides superior resistance to petroleum-based contaminants and ensures a positive dead-end lockup. As a veteran technician knows, maintaining the integrity of the gas regulator valve assembly is essential for preventing creep and ensuring precise downstream pressure control in systems flowing natural gas, LP, or dry CO2. This 10-inch rated component is engineered for seamless integration with the 143-80's union nut connection, allowing for rapid field servicing without disturbing the diaphragm case assembly or main piping. High-quality Sensus gas regulator parts like the 143-16-511-09 are vital for technicians looking to restore factory-spec HVAC gas pressure regulation and safety.

• Buna-N Nitrile Construction: Provides a durable, oil-resistant seal that prevents leakage and ensures consistent performance in varied gas temperatures.
• Precise Lockup Performance: Engineered to achieve a tight shut-off, reducing the risk of over-pressurization during low-demand periods.
• Simplified Field Maintenance: Compatible with the 143-80 union nut design, enabling quick replacement of the valve pad and stem without complex tools.
• Universal Compatibility: Designed specifically for Sensus (formerly Rockwell/Equimeter) 143 series regulators used in furnace and boiler applications.

• Is this assembly compatible with LP and Natural Gas? Yes, the Buna-N material is specifically designed to handle natural gas, propane, air, and other non-corrosive gases without degrading.
• How do I install the replacement valve pad? After depressurizing the regulator and removing the diaphragm case, the 143-16-511-09 simply pulls off the valve stem for a tool-free swap-out.
• Will this solve a "creeping" outlet pressure issue? Often, yes. Creep is usually caused by a damaged or dirty valve seat; replacing the assembly with a fresh Buna-N pad typically restores a proper seal.

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.