White-Rodgers 1311-103 Zone Valve

The White-Rodgers 1311-103 is a professional-grade, 1" sweat zone valve engineered for precision flow control in hydronic heating systems. Designed for 24v 3-wire configurations, this normally closed valve features a high flow capacity (37 Cv), ensuring minimal resistance in 1-inch ID tubing applications. A critical feature for any veteran installer is the built-in auxiliary switch (end switch), which simplifies wiring by providing direct signaling to a burner or circulator relay. Built to withstand demanding boiler environments, it operates at a maximum water temperature of 240°F and supports system pressures up to 50 PSI. The stainless steel valve stem and automatic recycling manual operator allow for reliable manual overrides and clear visual status of the valve position. Maintenance is streamlined via a removable motor assembly, which can be serviced or replaced without the need to drain the entire system loop, saving significant time on the job site.

• Serviceability: The motor assembly can be removed from the valve body without draining the system, reducing downtime during maintenance.
• High Flow Performance: A 37 Cv rating ensures efficient heat delivery across large residential or commercial zones with minimal friction loss.
• Integrated Controls: Built-in auxiliary contacts (rated at 2.0 A) eliminate the need for external relays to trigger your circulator or burner.
• Durability: Features a corrosion-resistant stainless steel stem and a rugged screw terminal wiring panel for secure electrical connections.
• Quiet Operation: Designed for residential comfort with a slow, 45-second cycle time that prevents water hammer and ensures silent opening and closing.

Can I use a 2-wire thermostat with this 1311-103 valve?
No, this is a 3-wire zone valve specifically designed for use with SPDT thermostats or controllers that provide a dedicated close signal; for 2-wire setups, the 1361 series is required.

What is the maximum pressure differential for reliable operation?
This valve is rated for a maximum differential of 15 PSI; exceeding this across the valve may lead to opening or closing issues.

Is this valve a tight shut-off?
Like most 1300 series hydronic valves, this unit is designed for zoned flow control but allows for a small, quantified leakage rate when closed; it should not be utilized as a primary safety shut-off valve.

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.