Nibco h-81416hv 1.5 in Press Pump Isolation Valve

Product Description

The NIBCO h-81416hv is a 1-1/2 inch press-connect pump isolation valve with a rotating flange drain, designed for hydronic heating and cooling systems. It allows technicians to isolate a circulator pump from the system without draining the entire loop, reducing downtime during pump service or replacement. The rotating flange simplifies alignment during installation and provides a convenient drain point for controlled fluid removal. This valve is installed by licensed plumbers and hydronics technicians working on residential and light commercial hydronic systems.

This valve is suited for closed-loop hydronic applications where press-fit connections are the preferred joining method. The isolation flange configuration positions the valve directly at the pump flanges, allowing single-point shutoff and drainage without disturbing adjacent piping. It is a practical solution in boiler rooms, mechanical closets, and utility spaces where access is limited and speed of service matters to working technicians.

Key Features

• 1-1/2 inch press-connect end connections for tool-based, no-solder installation
• Integrated rotating flange simplifies alignment to circulator pump ports
• Built-in drain port allows controlled fluid removal during pump service
• Isolation design enables pump removal without full system drain-down
• Compact flange configuration suits tight mechanical room installations

Compatibility

Designed as an OEM-style replacement or new-installation isolation valve for 1-1/2 inch press-fit hydronic piping systems and standard circulator pump flange connections.

Installation Notes

Installation should be performed by a licensed plumber or hydronics technician familiar with press-fit joining tools and hydronic system procedures. Depressurize and isolate the system section before installation, and verify the press tool and jaw set are rated for the pipe size and material. Ensure the rotating flange is fully seated and aligned to the pump inlet and outlet ports before completing the press connection. Consult local plumbing codes for any applicable inspection or pressure-test requirements after installation.

Technical Specifications

• Connection Size: 1-1/2 inches
• Connection Type: Press-connect with rotating isolation flange
• Drain: Rotating flange drain included

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: h-81416hv