Nti 64980199 3-way Mixing Valve

Product Description

The NTI 64980199 is a 3-way mixing valve designed for use in hydronic heating systems. Mixing valves of this type blend hot supply water with cooler return water to deliver a controlled, consistent outlet temperature to the distribution system. This valve is typically installed by licensed plumbers or hydronic heating technicians as part of a radiant floor, baseboard, or fan-coil circuit where precise supply temperature control is required. Its 3-way configuration allows for both mixing and diverting flow paths within a single valve body.

This valve is suited for residential and light commercial hydronic heating applications. It is commonly installed at the point where a high-temperature boiler circuit meets a lower-temperature distribution loop, protecting radiant tubing or terminal units from excessive heat while maintaining system efficiency. Installers working with NTI boiler systems will find this valve a direct-fit component for those configurations.

Key Features

• 3-way valve design supports both mixing and diverting flow configurations
• Engineered for hydronic heating system integration
• Provides controlled outlet temperature by blending hot and return water streams
• Sourced directly from NTI Boilers as an OEM component

Compatibility

Designed as an OEM-style replacement mixing valve for NTI hydronic boiler systems. Consult system documentation or the NTI installation manual to confirm fitment for your specific boiler model before installation.

Installation Notes

Installation should be performed by a licensed plumber or qualified hydronic heating technician in accordance with local plumbing codes and the International Plumbing Code (IPC) where applicable. Shut down the boiler and allow the system to cool and depressurize before removing the existing valve or making any connections. Verify flow direction markings on the valve body before finalizing installation, and confirm all connections are leak-free before returning the system to operation.

Technical Specifications

• Type: Mixing Valve
• Configuration: 3-Way
• UPC: 3234090866575

Standard Information

• Brand: NTI
• Manufacturer Part Number: 64980199