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GRUVLOKGrooved Pipe Couplings

GRUVLOK Rigid Coupling: Clamp, 3 in x 3 in, NBR Seal, 750 psi, Ductile Iron

The GRUVLOK Rigid Coupling is a 3 in x 3 in grooved pipe clamp made of ductile iron with an NBR seal, rated for a maximum operating pressure of 750 psi. It connects grooved x grooved pipe ends for rigid mechanical…

SKU 3G-OTH-460111

Brand
GRUVLOK
Item
Rigid Coupling: Clamp, 3 in x 3 in, NBR Seal, 750 psi, Ductile Iron
Category
Grooved Pipe Couplings
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Technical Specifications

GRUVLOK
Manufacturer Part Number
390213658
Type
3 in x 3 in, NBR Seal, 750 psi, Ductile Iron, Grooved x Grooved
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 3 in x 3 in grooved pipe clamp made of ductile iron with an NBR seal, rated for a maximum operating pressure of 750 psi. It connects grooved x grooved pipe ends for rigid mechanical joining in industrial piping systems.

Frequently Asked Questions

What is the GRUVLOK rigid coupling used for?

The GRUVLOK rigid coupling is used to mechanically join grooved-end pipe in industrial piping systems. It provides a rigid, leak-resistant connection for applications such as HVAC, fire protection, and process piping, handling pressures up to 750 psi with a ductile iron body and NBR seal.

What are the specifications of the GRUVLOK rigid coupling?

The GRUVLOK rigid coupling is a 3 in x 3 in grooved pipe clamp with a ductile iron body and NBR seal. It connects grooved x grooved pipe ends and is rated for a maximum operating pressure of 750 psi. The manufacturer part number is 390213658.

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 sourcing partner, we provide this coupling and support for grooved piping systems across multiple industries.

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 installation guidelines for pressure ratings.

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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