Nti 64980191 Circulator Pump ES2 3VK 63-7C-C

Product Description

The NTI 64980191 is a circulator pump configured for US-version Step 2 operation, designed for use in hydronic heating systems. The ES2 3VK 63-7C-C designation identifies the pump model family, performance curve, and connection configuration, giving installers a direct reference for specification and replacement work. This pump moves heated water through closed-loop piping circuits, maintaining proper flow rates across the system. Licensed HVAC technicians and plumbers working on boiler-based hydronic systems are the primary installers of this component.

The NTI 64980191 is suited for residential and light commercial hydronic heating applications where a reliable circulator is required to distribute hot water from a boiler through the system loop. The Step 2 configuration indicates a defined flow stage, making this pump appropriate for systems that require a specific circulation rate matched to boiler output and piping design. It is intended for use within NTI boiler system installations where this circulator is specified as original equipment or a direct replacement.

Key Features

• ES2 3VK 63-7C-C model designation for precise specification matching
• US-version configuration ensures compatibility with North American electrical standards
• Step 2 operation provides a defined, consistent flow stage for hydronic circuit performance
• OEM-style replacement designed for NTI boiler system applications

Compatibility

Designed as an OEM-style replacement circulator pump for NTI boiler-based hydronic heating systems specifying the ES2 3VK 63-7C-C US Version Step 2 pump.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician familiar with hydronic heating systems. Shut down the boiler and isolate the pump circuit using service valves before removing or installing the pump. Verify system pressure is relieved before disconnecting any fittings. Follow local plumbing codes and the boiler manufacturer installation documentation for proper orientation, wiring, and startup procedures.

Technical Specifications

• Model Designation: ES2 3VK 63-7C-C
• Version: US
• Stage: Step 2

Standard Information

• Brand: NTI
• Manufacturer Part Number: 64980191