Watts 61791 Dual Check Valve 3/4 Inch Bronze Npt

Product Description

The WATTS 61791 is a Series 7 dual check valve designed to prevent backflow of polluted water from entering a potable drinking water supply. The valve body is constructed from bronze, with two plastic replaceable check valve elements and stainless steel springs. Sized at 3/4 inch with female union NPT inlet and female NPT outlet connections, it is rated for continuous pressure service from a minimum of 10 psi up to a maximum of 150 psi. Licensed plumbers install this valve immediately downstream of the residential water meter to provide containment-level backflow protection at the service entrance or at individual outlets.

The WATTS 61791 is intended for non-health hazard residential water system containment applications where a dual check assembly is required by local code. It is suitable for use in both vertical and horizontal orientations, making it adaptable to a range of meter pit and utility room configurations. The valve handles water temperatures from 33 degrees F up to 180 degrees F, covering typical cold and hot water service conditions in residential plumbing systems. Always verify local inspection authority requirements before installation, as accepted backflow device types vary by jurisdiction.

Key Features

• Bronze body construction for corrosion resistance in potable water service
• Two plastic replaceable check valve elements for field serviceability
• Stainless steel springs for long-term check valve performance
• Rated for continuous pressure service up to 150 psi
• Installs in vertical or horizontal orientation
• Female union NPT x female NPT connection simplifies installation and removal

Compatibility

Designed as an OEM-style replacement or new-installation dual check valve for 3/4 inch residential water service lines requiring non-health hazard containment backflow protection.

Installation Notes

Installation of backflow prevention devices must be performed by a licensed plumber in accordance with applicable local plumbing codes and the requirements of the local water authority or inspection authority. Shut off the water supply and relieve system pressure before installing or servicing the valve. The union inlet connection allows for in-line removal without cutting pipe. Always confirm that the selected device type and installation location comply with local ordinances, as requirements vary by municipality.

Technical Specifications

• Application: Plumbing
• Size: 3/4 inches
• Material: Bronze
• Connection Type: Female Union NPT x Female NPT
• Maximum Working Pressure: 150 psi
• Minimum Working Pressure: 10 psi
• Minimum Temperature: 33 degrees F
• Maximum Temperature: 180 degrees F
• Height: 2.375 inches
• Width: 4.375 inches

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 61791