Watts 0780003 Valve

The Watts 0780003 Valve, also identified as the Watts Series 500, is a 1/2 inch heavy-duty float valve engineered for demanding commercial, industrial, and agricultural water control. As a technical staple in HVACR refrigeration systems and large-scale irrigation, this bronze float valve features a robust machined flange for secure tank wall mounting. The Watts 0780003 utilizes a single-lever, no-jam action paired with manganese bronze arms—available in both long and short configurations—to ensure precise level control. With a 1/2" Female NPT inlet and a straight-pipe threaded outlet, it is designed for high-capacity applications, delivering approximately 20 GPM at 50 PSI and up to 31 GPM at 100 PSI. The assembly includes replaceable Buna-N seals and serrated arms for quick field adjustments, making it a reliable choice for cooling tower basins and evaporative condensers where durability and high flow rates are non-negotiable.

• High-Capacity Performance: Optimized for high-volume flow, supporting up to 31 GPM at 100 PSI for rapid tank recovery.
• Heavy-Duty Construction: The bronze body and manganese bronze arms provide superior resistance to corrosion in harsh environments.
• Field Serviceable: Features replaceable seals and a no-jam 1-lever action to minimize downtime during maintenance.
• Precise Level Tuning: Serrated arms allow for fine-tuned water level adjustments without specialized tools.
• Secure Mounting: Integrated machined flange provides necessary support against tank walls for stable bulkhead installation.

• Standard vs. Heavy Duty: What is the pressure rating? This Watts 500 heavy duty valve is rated for a maximum pressure of 165 PSI (11.4 bar) and temperatures up to 180°F.
• Is the 0780003 the same as the Series 500? Yes, the ordering code 0780003 refers specifically to the 1/2" size within the Watts Series 500 mechanical float valve line.
• What mounting configuration is required? It is designed for horizontal piping and horizontal tank wall mounting using the 1/2" machined flange and locknut.

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.