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GRUVLOKGrooved Pipe Couplings

GRUVLOK Rigid Coupling

The GRUVLOK Rigid Coupling is a grooved pipe coupling clamp, 5 in x 5 in, with an NBR seal, rated to 750 psi, and constructed of ductile iron for grooved x grooved connections. This rigid coupling provides a secure…

SKU 3G-OTH-460122

Brand
GRUVLOK
Item
Rigid Coupling
Part Number
390213862
Category
Grooved Pipe Couplings
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

GRUVLOK
Manufacturer Part Number
390213862
Type
5 in x 5 in, NBR Seal, 750 psi, Ductile Iron, Grooved x Grooved
Maximum Operating Pressure
750 psi

Technical Documents

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

Product Description

The GRUVLOK Rigid Coupling is a grooved pipe coupling clamp, 5 in x 5 in, with an NBR seal, rated to 750 psi, and constructed of ductile iron for grooved x grooved connections. This rigid coupling provides a secure, leak-resistant joint for industrial piping systems, backed by GRUVLOK's engineering.

Frequently Asked Questions

What is the GRUVLOK rigid coupling used for?

The GRUVLOK rigid coupling is used to join grooved-end pipe in industrial piping systems, providing a secure, leak-resistant connection. It is suitable for applications such as HVAC, fire protection, and process piping where a rigid joint is required.

What are the specifications of the GRUVLOK rigid coupling 390213862?

This GRUVLOK rigid coupling is a 5 in x 5 in clamp with an NBR seal, rated to 750 psi maximum operating pressure. It is made of ductile iron and connects grooved x grooved pipe ends. The manufacturer part number is 390213862.

Where to buy the GRUVLOK rigid coupling worldwide?

3G Electric supplies the GRUVLOK rigid coupling worldwide, handling full logistics and customs clearance for international delivery. As a global industrial solutions provider, we source and deliver this coupling to your site, ensuring compliance with export requirements.

How to install a GRUVLOK rigid coupling?

To install a GRUVLOK rigid coupling, ensure pipe ends are clean and grooved per manufacturer specifications. Lubricate the NBR gasket, place it over the pipe ends, then position the coupling housing and tighten bolts evenly to the recommended torque. Always follow GRUVLOK's 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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Rigid bolted-clamp grooved pipe coupling for joining grooved-end pipe. Constructed of ductile iron with an NBR seal. Rated for maximum operating pressure of 750 psi. Suitable for use in fire protection, HVAC, and industrial piping systems
GRUVLOK
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This rigid coupling joins grooved-end pipe for mechanical piping systems. It features a ductile iron body with an NBR seal and is rated for a maximum operating pressure of 750 psi. The grooved x grooved connection provides a leak-tight joint suitable for high-pressure water, air, and non-corrosive fluids
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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 NBR seal, it provides a leak-tight, mechanically locked connection that resists axial movement. Rated for a maximum operating pressure of 750 psi
GRUVLOK
GRUVLOK
This rigid coupling is designed for joining grooved-end pipe in mechanical piping systems. It features a ductile iron body with an NBR seal and is rated for a maximum operating pressure of 750 psi. The grooved x grooved connection provides a leak-tight, rigid joint suitable for high-pressure applications
GRUVLOK
GRUVLOK
This rigid grooved pipe coupling is designed for joining grooved-end pipes in industrial piping systems. It features a ductile iron construction with an NBR seal, rated for a maximum operating pressure of 750 psi. The coupling provides a secure, leak-resistant connection suitable for applications such as HVAC, fire protection, and process piping
GRUVLOK
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Rigid bolted clamp-type grooved pipe coupling for joining grooved-end pipes. Constructed of ductile iron with an NBR seal. Rated for maximum operating pressure of 750 psi. Suitable for use in industrial piping systems such as HVAC, fire protection, and process piping

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