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GRUVLOK Clamp Coupling: Flex Bolted, 2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal - Grooved Pipe Couplings
GRUVLOKGrooved Pipe Couplings

GRUVLOK Clamp Coupling: Flex Bolted, 2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal

The GRUVLOK Clamp Coupling: Flex Bolted is a grooved pipe coupling in a 2-1/2 in x 2-1/2 in ductile iron configuration with an EPDM seal, rated for a maximum operating pressure of 1,000 psi (MPN 0390004521). 3G…

SKU 3G-OTH-468292

Brand
GRUVLOK
Item
Clamp Coupling: Flex Bolted, 2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal
Category
Grooved Pipe Couplings
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Technical Specifications

GRUVLOK
Manufacturer Part Number
0390004521
Type
2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal, 1,000 psi
Fitting Pipe Size
2-1/2 in x 2-1/2 in
Maximum Operating Pressure
1,000 psi
View Full Spec Sheet

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

Product Description

The GRUVLOK Clamp Coupling: Flex Bolted is a grooved pipe coupling in a 2-1/2 in x 2-1/2 in ductile iron configuration with an EPDM seal, rated for a maximum operating pressure of 1,000 psi (MPN 0390004521). 3G Electric interprets this demand and sources it across 14 industrial departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.

Frequently Asked Questions

What is a GRUVLOK flex bolted clamp coupling used for?

A GRUVLOK flex bolted clamp coupling joins grooved-end pipe in fire protection, HVAC, and industrial piping systems. Its ductile iron body and EPDM seal handle pressures up to 1,000 psi while allowing limited angular movement for misalignment.

What are the specifications of the GRUVLOK 0390004521 coupling?

The GRUVLOK 0390004521 is a 2-1/2 in x 2-1/2 in flex bolted clamp coupling made of ductile iron with an EPDM seal. It has a maximum operating pressure of 1,000 psi and is designed for grooved pipe connections.

Where to buy GRUVLOK couplings worldwide?

3G Electric supplies GRUVLOK couplings worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source across 14 departments — including combustion, pumps, and controls — to get you the right part.

How to install a GRUVLOK flex bolted coupling?

To install a GRUVLOK flex bolted coupling, ensure pipe ends are clean and grooved per manufacturer specs. Lubricate the EPDM gasket, place it over the pipe ends, then position the coupling housing and tighten bolts evenly to the recommended torque. Always follow the manufacturer's instructions.

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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