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GRUVLOKGrooved Pipe Couplings

GRUVLOK Rigid Coupling: Rigid Bolted Clamp, 8 in x 8 in, Ductile Iron, EPDM Seal

The GRUVLOK Rigid Coupling is a rigid bolted-clamp grooved pipe coupling, available in an 8 in x 8 in size, constructed from ductile iron with an EPDM seal, and rated for a maximum operating pressure of 600 psi (MPN…

SKU 3G-OTH-468334

Brand
GRUVLOK
Item
Rigid Coupling: Rigid Bolted Clamp, 8 in x 8 in, Ductile Iron, EPDM Seal
Category
Grooved Pipe Couplings
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Technical Specifications

GRUVLOK
Manufacturer Part Number
390213218
Type
8 in x 8 in, Ductile Iron, EPDM Seal, 600 psi
Fitting Pipe Size
8 in x 8 in
Maximum Operating Pressure
600 psi
View Full Spec Sheet

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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, available in an 8 in x 8 in size, constructed from ductile iron with an EPDM seal, and rated for a maximum operating pressure of 600 psi (MPN 390213218).

Frequently Asked Questions

What is a GRUVLOK rigid coupling used for?

A GRUVLOK rigid coupling joins grooved-end pipe in industrial fire-protection, HVAC, and process-piping systems. It provides a leak-tight, mechanically locked connection that resists axial movement, making it suitable for high-pressure water and other non-corrosive fluid services up to 600 psi.

What are the specifications of the GRUVLOK rigid coupling 390213218?

The GRUVLOK rigid coupling (MPN 390213218) is an 8 in x 8 in rigid bolted clamp made of ductile iron with an EPDM seal. It is rated for a maximum operating pressure of 600 psi and is designed for grooved pipe connections in industrial piping systems.

Where to buy a GRUVLOK rigid coupling worldwide?

3G Electric supplies the GRUVLOK rigid coupling (MPN 390213218) to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this 8 in x 8 in ductile-iron coupling.

How to install a GRUVLOK rigid coupling?

To install a GRUVLOK rigid coupling, ensure pipe ends are clean and grooved per manufacturer specifications. Place the gasket over both pipe ends, then position the coupling housing over the gasket. Insert bolts and tighten evenly to the torque recommended by GRUVLOK. Always follow the manufacturer's installation instructions for proper sealing and joint rigidity.

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 couplings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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