Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

GRUVLOK 2-1/2 in x 2-1/2 in Flex Bolted Grooved Pipe Coupling - Grooved Pipe Couplings
GRUVLOKGrooved Pipe Couplings

GRUVLOK 2-1/2 in x 2-1/2 in Flex Bolted Grooved Pipe Coupling

The GRUVLOK Clamp Coupling: Flex Bolted is a grooved pipe coupling in a 2-1/2 in x 2-1/2 in size, constructed from ductile iron with an NBR seal and rated for a maximum operating pressure of 600 psi (MPN 0390000826)…

SKU 3G-OTH-468300

Brand
GRUVLOK
Item
2-1/2 in x 2-1/2 in Flex Bolted Grooved Pipe Coupling
Category
Grooved Pipe Couplings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
0390000826
Type
2 1/2 in x 2 1/2 in, Ductile Iron, NBR Seal, 600 psi
Fitting Pipe Size
2-1/2 in x 2-1/2 in
Maximum Operating Pressure
600 psi

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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 size, constructed from ductile iron with an NBR seal and rated for a maximum operating pressure of 600 psi (MPN 0390000826). 3G Electric interprets this demand and delivers this genuine industrial coupling across 14 departments, with specialist depth in pumps and controls as an authorised distributor for brands like GRUVLOK, Schneider, ABB, and Siemens.

Frequently Asked Questions

What is a GRUVLOK flex bolted clamp coupling used for?

A GRUVLOK flex bolted clamp coupling joins grooved-end pipes in fire protection, HVAC, and industrial piping systems. It allows limited angular movement to accommodate thermal expansion and minor misalignment. 3G Electric supplies this genuine GRUVLOK coupling worldwide for demanding applications.

What are the specifications of the GRUVLOK 0390000826 coupling?

The GRUVLOK 0390000826 is a 2-1/2 in x 2-1/2 in flex bolted clamp coupling made of ductile iron with an NBR seal. It has a maximum operating pressure of 600 psi. 3G Electric sources this genuine GRUVLOK part for industrial piping systems.

Where to buy a GRUVLOK 2-1/2 in flex coupling worldwide?

3G Electric supplies the genuine GRUVLOK 2-1/2 in flex bolted clamp coupling (MPN 0390000826) to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this ductile iron coupling.

How to install a GRUVLOK flex bolted clamp coupling?

To install a GRUVLOK flex bolted clamp coupling, ensure pipe ends are clean and grooved per manufacturer specs. Lubricate the NBR gasket, place it over one pipe end, then bring the second pipe into position. Center the coupling housing over the gasket, tighten bolts evenly to the recommended torque. 3G Electric can provide technical support.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from GRUVLOK

View all GRUVLOK parts
GRUVLOK
GRUVLOK
Rigid coupling for joining grooved-end pipe in industrial piping systems. Ductile iron body with NBR seal, rated for 750 psi maximum operating pressure. Grooved x grooved connection for mechanical joining in applications such as HVAC, fire protection, and process piping
Grooved pipe coupling for joining 1 in ductile iron pipe in grooved piping systems. Features a ductile iron body with NBR seal, rated to 600 psi maximum operating pressure. Used in fire protection, HVAC, and process piping applications requiring a flexible, leak-tight connection
GRUVLOK
Grooved pipe coupling for joining 1 in ductile iron pipe in grooved piping systems. Features a ductile iron body with NBR seal, rated to 600 psi maximum operating pressure. Used in fire protection, HVAC, and process piping applications requiring a flexible, leak-tight connection
This grooved pipe coupling features a ductile iron body with EPDM seal, rated for maximum operating pressure of 500 psi. It connects grooved-end pipes in mechanical piping systems for water, air, and selected chemicals. The grooved x grooved x grooved configuration allows for flexible, leak-resistant joints in commercial and industrial piping
GRUVLOK
This grooved pipe coupling features a ductile iron body with EPDM seal, rated for maximum operating pressure of 500 psi. It connects grooved-end pipes in mechanical piping systems for water, air, and selected chemicals. The grooved x grooved x grooved configuration allows for flexible, leak-resistant joints in commercial and industrial piping
This bolted grooved pipe coupling connects 6-inch to 4-inch grooved-end pipes. Constructed of ductile iron with an NBR seal, it is rated for a maximum operating pressure of 500 psi. Overall length is 11 5/8 in. Suitable for use in fire protection, HVAC, and industrial piping systems
GRUVLOK
This bolted grooved pipe coupling connects 6-inch to 4-inch grooved-end pipes. Constructed of ductile iron with an NBR seal, it is rated for a maximum operating pressure of 500 psi. Overall length is 11 5/8 in. Suitable for use in fire protection, HVAC, and industrial piping systems
Grooved pipe coupling with 3 in x 3 in fitting size, 6 1/2 in length, bolted design, EPDM gasket, maximum operating pressure 500 psi, flexible movement tolerance. Meets American National Standards. Used in industrial piping systems for water, chemical, or HVAC lines requiring corrosion resistance and movement accommodation
GRUVLOK
Grooved pipe coupling with 3 in x 3 in fitting size, 6 1/2 in length, bolted design, EPDM gasket, maximum operating pressure 500 psi, flexible movement tolerance. Meets American National Standards. Used in industrial piping systems for water, chemical, or HVAC lines requiring corrosion resistance and movement accommodation
Rigid bolted grooved pipe coupling for joining grooved-end pipe. Constructed of ductile iron with an EPDM seal. Rated for maximum operating pressure of 300 psi. Suitable for use in fire protection, HVAC, and industrial piping systems handling water, oil, and non-corrosive fluids
GRUVLOK
Rigid bolted grooved pipe coupling for joining grooved-end pipe. Constructed of ductile iron with an EPDM seal. Rated for maximum operating pressure of 300 psi. Suitable for use in fire protection, HVAC, and industrial piping systems handling water, oil, and non-corrosive fluids
This grooved pipe coupling joins two sections of 1-1/2 in grooved-end pipe. Constructed of ductile iron with an EPDM seal, it is rated for a maximum operating pressure of 300 psi at 150°F. Suitable for use in fire protection, HVAC, and process piping systems
GRUVLOK
This grooved pipe coupling joins two sections of 1-1/2 in grooved-end pipe. Constructed of ductile iron with an EPDM seal, it is rated for a maximum operating pressure of 300 psi at 150°F. Suitable for use in fire protection, HVAC, and process piping systems
GRUVLOK
GRUVLOK
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