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GRUVLOK Metal Pipe Straight: Concentric Reducer, 4 in x 1 1/2 in, Ductile Iron - Grooved Pipe Fittings
GRUVLOKGrooved Pipe Fittings

GRUVLOK Metal Pipe Straight: Concentric Reducer, 4 in x 1 1/2 in, Ductile Iron

The GRUVLOK Metal Pipe Straight: Concentric Reducer (SKU 0390028603, 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…

SKU 3G-OTH-460907

Brand
GRUVLOK
Item
Metal Pipe Straight: Concentric Reducer, 4 in x 1 1/2 in, Ductile Iron
Category
Grooved Pipe Fittings
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Payment
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Technical Specifications

GRUVLOK
Manufacturer Part Number
0390028603
Type
4 in x 1 1/2 in, Ductile Iron, 300 psi @ 150° F
Fitting Pipe Size
4 in x 1-1/2 in
Maximum Operating Pressure
300 psi @ 150° F

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GRUVLOK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GRUVLOK Metal Pipe Straight: Concentric Reducer (SKU 0390028603, 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.

Used in

Common applications for GRUVLOK
Fire-protection systems — GRUVLOK ductile iron butterfly valves (e.g., SKU 3DVX7) for water-based sprinkler and standpipe networks.
Chemical processing — GRUVLOK carbon steel butterfly valve with 316 stainless steel disc (SKU 60WR76) for handling corrosive media.
General water distribution — GRUVLOK ductile iron butterfly valve with EPDM seat (SKU 60WR98) for municipal or industrial water lines.
HVAC piping — GRUVLOK grooved-end butterfly valves for chilled water or hot water systems requiring quick installation.
Industrial process control — GRUVLOK lever-operated butterfly valve (SKU 60WR82) for throttling or isolation in chemical media applications.

GRUVLOK Products

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.

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