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GRUVLOK Clamp Coupling: Rigid Bolted, 4 in x 4 in, Ductile Iron, NBR Seal - Grooved Pipe Couplings
GRUVLOKGrooved Pipe Couplings

GRUVLOK Clamp Coupling: Rigid Bolted, 4 in x 4 in, Ductile Iron, NBR Seal

The GRUVLOK Clamp Coupling is a rigid bolted grooved pipe coupling, available in a 4 in x 4 in size, constructed from ductile iron with an NBR seal, and rated for a maximum operating pressure of 300 psi (MPN 0390212751).

SKU 3G-OTH-468217

Brand
GRUVLOK
Item
Clamp Coupling: Rigid Bolted, 4 in x 4 in, Ductile Iron, NBR Seal
Category
Grooved Pipe Couplings
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Technical Specifications

GRUVLOK
Manufacturer Part Number
0390212751
Type
4 in x 4 in, Ductile Iron, NBR Seal, 300 psi
Fitting Pipe Size
4 in x 4 in
Maximum Operating Pressure
300 psi
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GRUVLOK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GRUVLOK Clamp Coupling is a rigid bolted grooved pipe coupling, available in a 4 in x 4 in size, constructed from ductile iron with an NBR seal, and rated for a maximum operating pressure of 300 psi (MPN 0390212751).

Frequently Asked Questions

What is a GRUVLOK rigid bolted clamp coupling used for?

A GRUVLOK rigid bolted clamp coupling joins grooved-end pipe in fire protection, HVAC, and industrial piping systems. It provides a leak-tight, mechanically rigid connection rated to 300 psi, suitable for water, oil, and other non-corrosive fluids.

What are the specifications of the GRUVLOK 4 in x 4 in clamp coupling?

This GRUVLOK coupling is a rigid bolted type for 4 in x 4 in grooved pipe. It is made of ductile iron with an NBR seal and has a maximum operating pressure of 300 psi. The manufacturer part number is 0390212751.

Where to buy GRUVLOK clamp couplings worldwide?

3G Electric supplies GRUVLOK clamp couplings worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 4 in x 4 in rigid coupling.

How to install a GRUVLOK rigid coupling?

Installation requires clean, properly grooved pipe ends. Lubricate the NBR gasket, place it over both pipe ends, then position the coupling housing over the gasket. Tighten bolts evenly to the torque specified by GRUVLOK to achieve a rigid, leak-free joint.

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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