GRUVLOK Metal Pipe Straight: Concentric Reducer, 4 in x 1 1/2 in, Ductile Iron
The GRUVLOK Metal Pipe Straight: Concentric Reducer (SKU 60XR23, MPN 0390028603) is a grooved pipe fitting in ductile iron, sized 4 in x 1-1/2 in, with a maximum operating pressure of 300 psi @ 150° F. 3G Electric…
SKU 3G-OTH-460907
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Product Description
The GRUVLOK Metal Pipe Straight: Concentric Reducer (SKU 60XR23, MPN 0390028603) is a grooved pipe fitting in ductile iron, sized 4 in x 1-1/2 in, with a maximum operating pressure of 300 psi @ 150° F. 3G Electric interprets your demand for this OEM-specified reducer, sources it across our 14 industrial departments, and supports your application with specialist depth in combustion, pumps and controls.
Frequently Asked Questions
What is a GRUVLOK concentric reducer used for?
A GRUVLOK concentric reducer connects pipes of different diameters in grooved piping systems, reducing flow from 4 in to 1-1/2 in. It is commonly used in HVAC, fire protection, and industrial process lines where ductile iron fittings rated to 300 psi @ 150° F are required.
What are the specifications of the GRUVLOK 0390028603 reducer?
The GRUVLOK 0390028603 is a ductile iron concentric reducer with fitting pipe sizes 4 in x 1-1/2 in. It has a maximum operating pressure of 300 psi @ 150° F. This grooved fitting is designed for mechanical joining without welding, ensuring reliable performance in industrial piping systems.
Where to buy GRUVLOK pipe fittings in worldwide?
3G Electric supplies GRUVLOK pipe fittings worldwide, including the 0390028603 concentric reducer. We handle full logistics and customs clearance for global delivery. As a sourcing partner across 14 industrial departments, we interpret your demand and provide the right OEM-specified components for your application.
How to install a GRUVLOK grooved reducer?
Installation requires aligning the grooved ends of the reducer with mating pipe grooves, then applying a gasket and coupling over the joint. Tighten bolts evenly to the manufacturer's torque specification. Always verify pipe-end preparation and lubricate the gasket per GRUVLOK guidelines to ensure a leak-free seal at rated pressure.
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3G Electric supplies GRUVLOK grooved pipe fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









