Asc 390029106 Gruvlok Grooved Concentric Reducer 8x3 in

Product Description

The ASC Engineered Solutions 390029106 is a Gruvlok 7072 grooved painted concentric reducer designed for use in grooved piping systems. This ductile iron fitting transitions flow from an 8-inch pipe down to a 3-inch pipe, making it a practical solution for reducing line size within a grooved mechanical piping network. At 12 pounds, it is a substantial fitting suited for commercial and industrial piping applications. The concentric design keeps the pipe centerlines aligned, which is the standard choice for horizontal and vertical runs where flow alignment is critical. Licensed pipefitters and mechanical contractors are the primary installers.

This concentric reducer is used in grooved piping systems found in commercial HVAC hydronic loops, fire protection, industrial process piping, and plumbing distribution systems. The 8-inch-by-3-inch size change is a significant step-down reduction, typically seen at main-to-branch transitions or at equipment connections where large mains feed smaller downstream lines. The painted exterior finish provides basic corrosion protection during installation and service.

Key Features

• Ductile iron construction for strength and durability in grooved piping applications
• Concentric reducer geometry keeps pipe centerlines aligned for horizontal and vertical installations
• 8-inch-by-3-inch step-down reduction for main-to-branch or equipment-connection transitions
• Painted exterior finish provides corrosion protection
• Grooved ends for use with standard grooved mechanical couplings
• Weighs 12 pounds — substantial fitting appropriate for commercial and industrial service

Compatibility

Designed for use in grooved piping systems with standard grooved mechanical couplings sized for 8-inch and 3-inch pipe. Verify groove dimensions and coupling style against the Gruvlok 7072 series specifications before installation.

Installation Notes

Installation should be performed by a licensed pipefitter or mechanical contractor in accordance with applicable mechanical codes and the manufacturer grooved piping system guidelines. Depressurize and drain the piping system fully before removing or installing any grooved fittings. Inspect pipe ends for correct groove dimensions and confirm gasket and coupling selection matches the service fluid and pressure rating before assembly. Lubricate the gasket and seat it evenly around the pipe ends prior to coupling engagement.

Technical Specifications

• Fitting Material: Ductile Iron
• Fitting Size: 8 inches x 3 inches
• Finish: Painted
• Reducer Type: Concentric
• End Connection: Grooved
• Weight: 12 pounds

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 390029106