Nibco S-1810-LF-3/4 Manual Balancing Valve 3/4 in

Product Description

The NIBCO S-1810-LF-3/4 is a lead-free, fixed-orifice manual balancing valve designed for hydronic and plumbing systems where precise flow control is required. Built to dezincification-resistant standards, this 3/4-inch solder-end valve features integral pressure-temperature ports that allow direct system readings across the orifice without special calculators or external meters. The valve delivers 1440 degrees of throttling adjustment for accurate flow setting and includes a memory stop that enables full system isolation for maintenance, then returns the valve to its previous calibrated position once service is complete. Licensed plumbers and mechanical contractors install this valve in commercial and residential hydronic systems.

The S-1810-LF-3/4 belongs to the NIBCO FLO-BOSS 1810 Series, a line of fixed-orifice manual balancing valves intended for a wide range of hydronic and plumbing balancing applications. The solder-end connection makes it suitable for copper pipe installations. Its lead-free construction meets applicable safe drinking water requirements, broadening its use to potable water systems as well as closed-loop hydronic circuits. The integral pressure-temperature ports simplify commissioning and ongoing system diagnostics without requiring the valve to be removed from the line.

Key Features

• Lead-free, dezincification-resistant construction suitable for potable and hydronic systems
• Fixed orifice with integral pressure-temperature ports for direct differential readings
• 1440 degrees of throttling adjustment for precise flow balancing
• Integral memory stop allows system isolation for maintenance with return to retained settings
• 3/4-inch solder-end connection for copper pipe installations
• No special calculators or external meters required for system readings

Compatibility

Designed as an OEM-style replacement or new-installation balancing valve for 3/4-inch copper pipe hydronic and plumbing systems requiring fixed-orifice manual flow balancing.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off system pressure and drain the relevant line segment before soldering the valve into the circuit. Avoid applying excessive heat directly to the valve body during the solder connection process to protect internal components. Verify pressure-temperature port readings during system commissioning to confirm proper flow balance.

Technical Specifications

• Connection Size: 3/4 inches
• End Connection Type: Solder End
• Orifice Type: Fixed
• Throttling Range: 1440 degrees
• Lead-Free: Yes
• Dezincification-Resistant: Yes
• Integral Pressure-Temperature Ports: Yes
• Memory Stop: Yes
• Warranty: 5-year 125% limited
• UPC: 039923368461

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: S-1810-LF-3/4