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GRUVLOK Metal Pipe Straight: Concentric Reducer, 8 in x 4 in, Ductile Iron - Grooved Pipe Fittings
GRUVLOKGrooved Pipe Fittings

GRUVLOK Metal Pipe Straight: Concentric Reducer, 8 in x 4 in, Ductile Iron

The GRUVLOK Metal Pipe Straight: Concentric Reducer is a grooved pipe fitting in ductile iron, sized 8 in x 4 in, with a maximum operating pressure of 300 psi @ 150° F. 3G Electric interprets customer demand and…

SKU 3G-OTH-460967

Brand
GRUVLOK
Item
Metal Pipe Straight: Concentric Reducer, 8 in x 4 in, Ductile Iron
Category
Grooved Pipe Fittings
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Technical Specifications

GRUVLOK
Manufacturer Part Number
0390029148
Type
8 in x 4 in, Ductile Iron, 300 psi @ 150° F
Fitting Pipe Size
8 in x 4 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 is a grooved pipe fitting in ductile iron, sized 8 in x 4 in, with a maximum operating pressure of 300 psi @ 150° F. 3G Electric interprets customer demand and delivers this genuine industrial component across 14 departments — and far more — with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is a GRUVLOK concentric reducer used for?

A GRUVLOK concentric reducer connects pipes of different diameters in a straight run, reducing flow from 8 in to 4 in. It is used in fire protection, HVAC, and industrial piping systems where grooved-end connections are required for quick, reliable assembly.

What are the specifications of the GRUVLOK 8 in x 4 in concentric reducer?

This GRUVLOK concentric reducer is ductile iron, sized 8 in x 4 in, with a maximum operating pressure of 300 psi @ 150° F. The manufacturer part number is 0390029148. It is a grooved pipe fitting designed for straight-run diameter transitions.

Where to buy a GRUVLOK concentric reducer worldwide?

3G Electric supplies and delivers the GRUVLOK 8 in x 4 in concentric reducer worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order arrives at your facility, wherever it is located.

How to install a GRUVLOK grooved pipe 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 follow GRUVLOK's published installation instructions for proper sealing and pressure rating.

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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