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GRUVLOKGrooved Pipe Couplings

GRUVLOK Rigid Coupling, 3 in x 3 in, Ductile Iron, EPDM Seal, 750 psi

The GRUVLOK Rigid Coupling is a rigid bolted-clamp grooved pipe coupling in a 3 in x 3 in size, constructed from ductile iron with an EPDM seal and rated for a maximum operating pressure of 750 psi (MPN 390213410).

SKU 3G-OTH-468322

Brand
GRUVLOK
Item
Rigid Coupling, 3 in x 3 in, Ductile Iron, EPDM Seal, 750 psi
Part Number
390213410
Category
Grooved Pipe Couplings
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Technical Specifications

GRUVLOK
Manufacturer Part Number
390213410
Type
3 in x 3 in, Ductile Iron, EPDM Seal, 750 psi
Fitting Pipe Size
3 in x 3 in
Maximum Operating Pressure
750 psi

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

Product Description

The GRUVLOK Rigid Coupling is a rigid bolted-clamp grooved pipe coupling in a 3 in x 3 in size, constructed from ductile iron with an EPDM seal and rated for a maximum operating pressure of 750 psi (MPN 390213410).

Frequently Asked Questions

What is a GRUVLOK rigid coupling used for?

A GRUVLOK rigid coupling joins grooved-end pipe in fire-protection, HVAC, and industrial piping systems. It provides a leak-tight, mechanically locked connection rated for 750 psi, suitable for high-pressure water, air, and other non-corrosive services.

What are the specifications of the GRUVLOK rigid coupling 390213410?

This GRUVLOK rigid coupling is a 3 in x 3 in rigid bolted clamp made of ductile iron with an EPDM seal. It has a maximum operating pressure of 750 psi and is identified by manufacturer part number 390213410.

Where to buy GRUVLOK rigid couplings worldwide?

3G Electric supplies GRUVLOK rigid couplings worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for a quote on the 3 in x 3 in ductile iron coupling rated for 750 psi.

How to install a GRUVLOK rigid coupling?

Installation requires clean, properly grooved pipe ends. Lubricate the EPDM gasket, place it over one pipe end, then slide the coupling housing over the gasket. Insert bolts and tighten evenly to the manufacturer's torque specification. Always follow GRUVLOK's published installation instructions.

Used in

Common applications for GRUVLOK
Fire protection systems — GRUVLOK grooved couplings and fittings for joining sprinkler pipe, such as the 6-inch coupling (SKU 46KK70) rated for 300 psi.
HVAC piping — GRUVLOK flexible couplings (e.g., SKU 408JM0) to accommodate thermal movement in chilled water and heating systems.
Process piping — GRUVLOK concentric reducer elbow (SKU 408GX7) for changing pipe direction and size in chemical and industrial processes.
Industrial piping — GRUVLOK high-pressure couplings (e.g., SKU 408HF6) rated to 1,000 psi for demanding applications.
Mechanical piping systems — GRUVLOK rigid couplings (e.g., SKU 60XP12) for joining large-diameter pipe in water distribution.
Plumbing systems — GRUVLOK NSF 61 approved couplings for potable water applications, ensuring compliance with health standards.
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GRUVLOK Products

3G Electric supplies GRUVLOK grooved pipe couplings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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This rigid bolted clamp grooved pipe coupling is designed for joining grooved-end pipes in mechanical piping systems. Constructed of ductile iron with an EPDM seal, it provides a leak-proof connection rated for a maximum operating pressure of 750 psi. Suitable for use in fire protection, HVAC, and process piping applications
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This rigid bolted clamp grooved pipe coupling joins grooved-end pipe in fire protection, HVAC, and industrial piping systems. Constructed of ductile iron with an EPDM seal, it provides a leak-tight, mechanically locked connection that resists axial movement for high-pressure applications up to 750 psi
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This rigid bolted-clamp grooved pipe coupling joins grooved-end pipe in industrial piping systems. Constructed of ductile iron with an EPDM seal, it provides a leak-tight, mechanically locked connection that resists axial movement. Rated for a maximum operating pressure of 600 psi, it is suitable for high-pressure water and non-corrosive fluid services
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This grooved pipe coupling joins grooved-end pipe for rigid mechanical connections. Constructed with a ductile iron body and EPDM seal, it is rated for a maximum operating pressure of 750 psi. Suitable for industrial piping systems requiring leak-resistant joints

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