Watts 0780349 Stem

The Watts 0780349 Stem Assembly is a heavy-duty brass float valve stem designed for high-capacity water flow regulation in demanding commercial, industrial, and agricultural environments. This 12-inch component, also identified in technical catalogs as the Watts KSTEM-12.5, features a 3/8-inch outer diameter (OD) rod construction to ensure structural rigidity under hydraulic pressure. As a veteran-grade HVACR replacement part, this 12.5 stem assembly utilizes precision-cut NPT threads—specifically a 5/16-18 NPT end for the valve connection and a 3/8-16 NPT end for the float—to provide a leak-proof, secure fit during installation. The high-grade brass alloy provides superior corrosion resistance, making it the standard choice for professional contractors maintaining large-scale float valve systems. Whether you are servicing cooling towers or agricultural irrigation controls, this 0780349 identical to 12.5 part ensures the oscillation and mechanical timing of the valve remain within narrow operational tolerances.

• Precise Compatibility: Confirmed 12-inch length and 3/8-inch rod diameter, specifically engineered to replace the Watts 12.5 Stem Assm without modification.
• Industrial Durability: Machined from heavy-duty brass to prevent bending or failure during high-frequency valve actuation.
• Dual-Thread Design: Features 5/16-18 and 3/8-16 NPT threaded ends for seamless integration between the valve body and the float.
• Corrosion Resistance: Brass construction is ideal for constant exposure to water, preventing the calcification and rust common in inferior steel alternatives.

Is the Watts 0780349 compatible with the KSTEM-12.5?
Yes, the 0780349 and 12.5 stem assemblies are technically identical in length, thread pitch, and material specifications, allowing for direct field replacement.

What are the specific thread sizes for this stem?
This stem utilizes a dual-thread configuration with 5/16-18 NPT for the valve side and 3/8-16 NPT for the float side to accommodate standard industrial float balls.

Can this be used in high-temperature fluid applications?
While the brass body is highly resilient, it is primarily designed for high-capacity water flow systems. Always verify that your specific float and valve seals are rated for your system's peak operating temperature.

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.