Jobe Valves Vortex Partfill Float Valve: Maximise Rainwater Harvesting for Irrigation In the pursuit of sustainable water management, the Jobe Valves Vortex Partfill Float Valve is a game-changing component designed for efficiency, reliability, and unparalleled water conservation. This high-flow valve is the indispensable link for integrating a mains water backup into your rainwater Irrigation setup, ensuring your essential services never run dry while maintaining maximum capacity for the next downpour. The Basic Principle of Partfill Operation: Saving Water Smartly The defining feature of the Vortex Partfill Valve is its intelligent mechanism to automatically maintain only a low level of water in your storage tank during periods of low or no rainfall. This is fundamentally different from a standard float valve, which continuously attempts to keep the tank completely full. How the Jobe Valves Partfill System Works: Water Level Differential: The valve is installed on the side of the tank, typically above the overflow. It utilizes a weighted float attached to a cord, creating a significant differential between the minimum water level and the maximum mains-fed level. This differential can be up to 6 inches (150mm), depending on pressure, creating a generous "air gap." Activation Point: As water is drawn from the tank for your Irrigation Systems or other uses, the water level drops. The weighted float travels down the cord until it reaches a pre-set bottom stop. Only at this specific, low point does the valve activate the flow of mains or pumped backup water. Part-Fill: The valve refills the tank only until the weighted float lifts clear of the bottom stop. This action guarantees a minimum reserve level for continuous service while critically leaving the vast majority of the tank volume empty. Rainwater Priority: By leaving this large volume free, the system maximizes its capacity to capture the next rainfall. This ensures that the free, harvested rainwater is always prioritized for filling the tank, significantly reducing your reliance on and consumption of costly mains water. The Vortex Partfill Valve therefore acts as a high-performance mains backup that only engages when necessary, making it the perfect partner for all Rain Water Harvesting tanks and Irrigation systems. High-Flow Performance and Robust Construction As a member of the acclaimed Jobe Valves Vortex series, the Vortex Partfill Float Valve is engineered for maximum performance. It boasts an exceptional flow rate of up to 158 Gallons per minute (GPM) at 35 PSI, ensuring rapid refill when the minimum level is reached, minimizing operational downtime for demanding Irrigation Systems and process applications. Constructed from robust, non-corroding materials such as GF Nylon, Acetal, and 304 Stainless Steel hardware, this valve is built to withstand harsh environments and non-potable water found in rainwater harvesting setups. It operates reliably across a wide pressure range (as low as 5 PSI up to 150 PSI) and features a slow shut-down mechanism to minimize water hammer, protecting your plumbing infrastructure. Versatile Size Options for All Irrigation Systems To ensure a seamless fit with commercial, agricultural, or residential applications, the Jobe Valves Partfill valve is available in multiple high-flow inlet sizes, all utilizing National Pipe Thread (NPT) connections, designed to perfectly match your supply plumbing. These sizes are standardized for easy integration into existing pipework: Connection Type Inlet Size (NPT) Flow Rate (Approx.) Typical Application High Flow 1 ¼” NPT Up to 158 GPM Medium-to-Large Tanks, Commercial Systems High Flow 1 ½” NPT Up to 158 GPM Large Agricultural/Industrial Water Cisterns High Flow 2” NPT Up to 158 GPM High-Demand Applications, Rapid Refill Requirements The flow rate is maximized in each size to ensure your system can be topped up quickly when needed. The valve body conveniently unscrews from the tail, allowing easy access for maintenance, cleaning, and part replacement without draining the tank completely—a feature that underlines the high-quality, user-friendly design of the Vortex Partfill Float Valve. This ensures simple servicing and long-term reliability. In summary, choosing the Jobe Valves Vortex Partfill Float Valve means choosing a reliable, high-flow, and highly intelligent component that ensures water security for your Irrigation Systems while championing the economical and environmental benefits of rainwater Irrigation. Stop over-filling your tank with expensive mains water—choose the smart, part-fill solution. For more information on the Jobe Valves Vortex Partfill you can review the Information sheet here. To see the entire Jobe Valves Vortex product family click here.
