The Watts 0123437 (Model LFEMVII6400SS350115-40) is a heavy-duty, 2-inch motorized ball valve assembly engineered for precision flow control in commercial HVACR and light industrial process systems. This lead-free valve features a 2-piece bronze body construction and is equipped with a high-torque 115 VAC electric actuator. With a 40-second cycle time and a 75% duty cycle rating, it provides reliable automated shutoff for hot water, chilled water, and low-pressure steam applications. The 316 stainless steel ball and blowout-proof stem ensure long-term durability against corrosive media, while the Durafill PTFE seats maintain a bubble-tight seal. This assembly is the direct 0431305 replacement and also replaces the Watts 0431311, making it a critical component for technicians maintaining legacy zone control systems. The unit includes a visual position indicator and a manual override, allowing for operational flexibility during power loss or system testing. Key Benefits Direct Drop-In Compatibility: Serves as the official replacement for legacy models 0431305 and 0431311, ensuring seamless integration into existing 2-inch pipelines. Superior Media Resistance: Features 316 stainless steel internal trim and PTFE packing to handle steam up to 100 psi WSP and fluids up to 600 psi WOG. Maintenance Efficiency: The motor can be swapped without draining the entire system, significantly reducing downtime for HVAC zone control repairs. Flexible Installation: Engineered to be mountable in any orientation, provided the actuator is positioned to avoid excessive radiant heat in steam applications. Lead-Free Compliance: Meets strict potable water safety standards with a wetted surface containing less than 0.25% lead by weight. Common Questions Is this valve suitable for high-temperature steam lines? Yes, it is rated for up to 100 psi WSP. For high-temperature service, ensure the actuator is installed in a horizontal plane to protect the electrical components from radiant heat rising from the pipe. What are the electrical requirements for the 0123437 actuator? This specific model operates on 115 VAC. It features a clearly marked integral terminal strip to simplify field wiring for contractors. Can I manually operate the valve if the building loses power? This assembly includes a standard manual override, allowing technicians to manually position the stainless steel ball during power failures or commissioning. 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.
