Asc 390017440 Grooved Reducing Tee 4x3 Inch Ductile Iron

Product Description

The ASC Engineered Solutions 390017440 is a Gruvlok grooved painted reducing tee designed for use in grooved piping systems where a branch line requires a smaller diameter than the main run. Sized at 4 inches on the run and 3 inches on the branch outlet, this fitting is manufactured from ductile iron and finished with a painted coating to resist surface corrosion during storage and service. Licensed pipefitters and mechanical contractors install this fitting as part of fire protection, HVAC hydronic, and industrial process piping assemblies. It connects directly to grooved-end pipe using standard Gruvlok couplings without welding or threading.

This reducing tee is suited for commercial and industrial piping systems that require a grooved mechanical joining method. Typical applications include fire suppression headers, chilled and hot water distribution loops, and process fluid systems where a 4-inch main run branches down to a 3-inch lateral. The grooved system approach allows for faster installation and easier future disassembly compared to flanged or welded alternatives.

Key Features

• 4-inch run by 3-inch branch configuration for inline flow reduction at a tee junction
• Ductile iron construction provides high tensile strength and impact resistance for demanding mechanical piping environments
• Painted exterior finish helps protect against surface corrosion during handling, storage, and service life
• Grooved-end design is compatible with standard grooved couplings, eliminating the need for welding or threading at the joint
• Suitable for fire protection, hydronic HVAC, and industrial process piping applications

Compatibility

Designed as a grooved mechanical piping fitting for use with standard Gruvlok-compatible grooved couplings on 4-inch main run and 3-inch branch pipe ends, consistent with grooved pipe joining systems used in commercial and industrial mechanical piping.

Installation Notes

Installation should be performed by a licensed pipefitter or qualified mechanical contractor in accordance with applicable mechanical and fire protection codes. Depressurize and drain the piping system completely before removing or installing any grooved fittings. Ensure pipe ends are properly grooved to manufacturer specifications and that the correct gasket and coupling are selected for the fluid type and pressure rating of the system. Do not overtighten coupling bolts beyond the coupling manufacturer's specified torque range.

Technical Specifications

• Fitting Size: 4 inches x 3 inches
• Fitting Material: Ductile Iron
• Finish: Painted
• Item Weight: 10.40 pounds

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 390017440