We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
RFQ CartGet a QuoteSign inSign up
GRUVLOK Metal Pipe Elbow: Concentric Reducer, 6 in x 3 in, Grooved x Threaded - Grooved Pipe Fittings
GRUVLOKGrooved Pipe Fittings

GRUVLOK Metal Pipe Elbow: Concentric Reducer, 6 in x 3 in, Grooved x Threaded

The GRUVLOK Metal Pipe Elbow is a concentric reducer grooved pipe fitting, type 6 in x 3 in, Grooved x Threaded, with a 4 in length (MPN 0390138345). This component is designed for industrial piping systems requiring…

SKU 3G-OTH-460556

Brand
GRUVLOK
Item
Metal Pipe Elbow: Concentric Reducer, 6 in x 3 in, Grooved x Threaded
Category
Grooved Pipe Fittings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

GRUVLOK
Manufacturer Part Number
0390138345
Type
6 in x 3 in, Grooved x Threaded
Lg
4 in
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The GRUVLOK Metal Pipe Elbow is a concentric reducer grooved pipe fitting, type 6 in x 3 in, Grooved x Threaded, with a 4 in length (MPN 0390138345). This component is designed for industrial piping systems requiring a reduction in diameter, supplied by 3G Electric across 14 industrial departments, with specialist depth in combustion, pumps and controls.

Frequently Asked Questions

What is the GRUVLOK 6 in x 3 in concentric reducer used for?

The GRUVLOK concentric reducer connects a 6-inch grooved pipe to a 3-inch threaded pipe in industrial piping systems. It reduces flow diameter for pressure or velocity changes in water, HVAC, or process lines. 3G Electric supplies this fitting across 14 industrial departments, with specialist depth in combustion, pumps and controls.

What are the specifications of the GRUVLOK 0390138345 pipe elbow?

This GRUVLOK metal pipe elbow is a concentric reducer with a 6 in x 3 in size, grooved x threaded connection, and 4 in length. The manufacturer part number is 0390138345. It is designed for durable industrial piping applications requiring a diameter reduction.

Where to buy GRUVLOK grooved pipe fittings worldwide?

3G Electric supplies GRUVLOK grooved pipe fittings worldwide, handling full logistics and customs clearance for global delivery. As a global industrial solutions provider, we source genuine components like this 6 in x 3 in concentric reducer and deliver to your site. Contact us for availability and lead time.

How to install a GRUVLOK grooved x threaded reducer?

Installation requires aligning the grooved end with a compatible coupling and tightening bolts to the manufacturer's torque spec. The threaded end connects to male-threaded pipe using thread sealant. Always follow GRUVLOK's published installation instructions for proper joint integrity 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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from GRUVLOK

View all GRUVLOK parts →
GRUVLOK Metal Pipe Elbow: 90° Elbow, 10 in x 10 in, Grooved x Grooved (MPN 0390116929). Key specifications — Brand: GRUVLOK.
GRUVLOK
GRUVLOK Metal Pipe Elbow: 90° Elbow, 10 in x 10 in, Grooved x Grooved (MPN 0390116929). Key specifications — Brand: GRUVLOK.
Metal Pipe Tee: 304 Stainless Steel, 3 in x 3 in x 2 in, 3 in Lg, EPDM (MPN 1330007985). Key specifications — Brand: GRUVLOK; Specific Fitting Shape: Tee; Standards: FM Approved; Fitting Pipe Size: 3 in x 3 in x 2 in.
GRUVLOK
Metal Pipe Tee: 304 Stainless Steel, 3 in x 3 in x 2 in, 3 in Lg, EPDM (MPN 1330007985). Key specifications — Brand: GRUVLOK; Specific Fitting Shape: Tee; Standards: FM Approved; Fitting Pipe Size: 3 in x 3 in x 2 in.
GRUVLOK Metal Pipe Elbow: Concentric Reducer, 10 in x 6 in, Grooved x Grooved, 6 in Lg (MPN 0390131266). Key specifications — Brand: GRUVLOK.
GRUVLOK
GRUVLOK Metal Pipe Elbow: Concentric Reducer, 10 in x 6 in, Grooved x Grooved, 6 in Lg (MPN 0390131266). Key specifications — Brand: GRUVLOK.
GRUVLOK Metal Pipe Tee: Tee, 4 in x 4 in x 3 in, Carbon Steel, EPDM Seal, 4 in Overall Lg (MPN 0390020667). Key specifications — Brand: GRUVLOK; Pipe Fitting Material: Carbon Steel; Fitting Pipe Size: 4 in x 4 in x 3 in.
GRUVLOK
GRUVLOK Metal Pipe Tee: Tee, 4 in x 4 in x 3 in, Carbon Steel, EPDM Seal, 4 in Overall Lg (MPN 0390020667). Key specifications — Brand: GRUVLOK; Pipe Fitting Material: Carbon Steel; Fitting Pipe Size: 4 in x 4 in x 3 in.
GRUVLOK Metal Pipe Straight: Straight, 2 1/2 in x 1 1/2 in, Ductile Iron, 300 psi @ 150° F (MPN 0390037075). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 2-1/2 in x 1-1/2 in.
GRUVLOK
GRUVLOK Metal Pipe Straight: Straight, 2 1/2 in x 1 1/2 in, Ductile Iron, 300 psi @ 150° F (MPN 0390037075). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 2-1/2 in x 1-1/2 in.
GRUVLOK Cap: Solid Cap, 2 1/2 in, Ductile Iron, 1,000 psi (MPN 0390030161). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 1,000 psi.
GRUVLOK
GRUVLOK Cap: Solid Cap, 2 1/2 in, Ductile Iron, 1,000 psi (MPN 0390030161). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 1,000 psi.
GRUVLOK Metal Pipe Tee: Tee, 5 in x 5 in x 5 in, Ductile Iron, EPDM Seal, 5 in Overall Lg (MPN 0390016905). Key specifications — Brand: GRUVLOK; Fitting Pipe Size: 5 in x 5 in x 5 in.
GRUVLOK
GRUVLOK Metal Pipe Tee: Tee, 5 in x 5 in x 5 in, Ductile Iron, EPDM Seal, 5 in Overall Lg (MPN 0390016905). Key specifications — Brand: GRUVLOK; Fitting Pipe Size: 5 in x 5 in x 5 in.
Metal Pipe Elbow: 304 Stainless Steel, 1 1/2 in x 1 1/2 in (MPN 1330007200). Key specifications — Brand: GRUVLOK; Specific Fitting Shape: 90° Elbow; Standards: ASTM A403 CR; Fitting Pipe Size: 1-1/2 in x 1-1/2 in.
GRUVLOK
Metal Pipe Elbow: 304 Stainless Steel, 1 1/2 in x 1 1/2 in (MPN 1330007200). Key specifications — Brand: GRUVLOK; Specific Fitting Shape: 90° Elbow; Standards: ASTM A403 CR; Fitting Pipe Size: 1-1/2 in x 1-1/2 in.