We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

3G Electric
RFQ CartGet a QuoteSign inSign up
Image not available
GRUVLOKGrooved Pipe Couplings

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

The GRUVLOK Rigid Coupling is a rigid bolted clamp grooved pipe coupling, available in a 2-1/2 in x 2-1/2 in size. Constructed from ductile iron with an EPDM seal, it is rated for a maximum operating pressure of 750…

SKU 3G-OTH-468326

Brand
GRUVLOK
Item
Rigid Coupling: Rigid Bolted Clamp, 2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal
Category
Grooved Pipe Couplings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
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

Technical Specifications

GRUVLOK
Manufacturer Part Number
390213408
Type
2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal, 750 psi
Fitting Pipe Size
2-1/2 in x 2-1/2 in
Maximum Operating Pressure
750 psi
View Full Spec Sheet

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 Rigid Coupling is a rigid bolted clamp grooved pipe coupling, available in a 2-1/2 in x 2-1/2 in size. Constructed from ductile iron with an EPDM seal, it is rated for a maximum operating pressure of 750 psi (MPN 390213408).

Frequently Asked Questions

What is the GRUVLOK Rigid Coupling used for?

The GRUVLOK Rigid Coupling is used to join grooved-end pipes in industrial fire protection, HVAC, and process piping systems. It provides a rigid, leak-proof connection rated for 750 psi, suitable for high-pressure water, oil, and chemical lines.

What are the specifications of the GRUVLOK Rigid Coupling 390213408?

The GRUVLOK Rigid Coupling (MPN 390213408) is a 2-1/2 in x 2-1/2 in rigid bolted clamp made of ductile iron with an EPDM seal. It has a maximum operating pressure of 750 psi and is designed for grooved pipe systems.

Where to buy the GRUVLOK Rigid Coupling worldwide?

3G Electric supplies the GRUVLOK Rigid Coupling worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 750 psi 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 specs. Lubricate the EPDM gasket, place it over the pipe ends, then position the ductile iron housing halves and tighten the bolts evenly to the recommended torque. Always follow GRUVLOK's installation 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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from GRUVLOK

View all GRUVLOK parts →
GRUVLOK Clamp Coupling: Flex Hinged, 1 in x 1 in, Ductile Iron, EPDM Seal, 300 psi, 4 in Overall Lg (MPN 0390199982). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi; Fitting Pipe Size: 1 in x 1 in.
GRUVLOK
GRUVLOK Clamp Coupling: Flex Hinged, 1 in x 1 in, Ductile Iron, EPDM Seal, 300 psi, 4 in Overall Lg (MPN 0390199982). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi; Fitting Pipe Size: 1 in x 1 in.
GRUVLOK
GRUVLOK
GRUVLOK Rigid Coupling: Clamp, 2 1/2 in x 2 1/2 in, EPDM Seal, 750 psi, Ductile Iron, Bolted (MPN 390213608). Key specifications — Maximum Operating Pressure: 750 psi; Brand: GRUVLOK.
GRUVLOK Clamp Coupling: Clamp, 4 in x 4 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390000347). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 4 in x 4 in.
GRUVLOK
GRUVLOK Clamp Coupling: Clamp, 4 in x 4 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390000347). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 4 in x 4 in.
GRUVLOK Clamp Coupling: Flex Hinged, 4 in x 4 in, Ductile Iron, NBR Seal, 300 psi (MPN 0390200566). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi; Fitting Pipe Size: 4 in x 4 in.
GRUVLOK
GRUVLOK Clamp Coupling: Flex Hinged, 4 in x 4 in, Ductile Iron, NBR Seal, 300 psi (MPN 0390200566). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi; Fitting Pipe Size: 4 in x 4 in.
GRUVLOK Clamp Coupling: 3 in x 3 in, NBR Seal, 300 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390209567). Key specifications — Maximum Operating Pressure: 300 psi; Brand: GRUVLOK.
GRUVLOK
GRUVLOK Clamp Coupling: 3 in x 3 in, NBR Seal, 300 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390209567). Key specifications — Maximum Operating Pressure: 300 psi; Brand: GRUVLOK.
GRUVLOK Clamp Coupling: Clamp, 6 in x 6 in, Ductile Iron, NBR Seal, 300 psi @ 150° F (MPN 0390013712). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 6 in x 6 in.
GRUVLOK
GRUVLOK Clamp Coupling: Clamp, 6 in x 6 in, Ductile Iron, NBR Seal, 300 psi @ 150° F (MPN 0390013712). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 6 in x 6 in.
GRUVLOK Metal Pipe Straight: Straight, 2 in x 2 in, Ductile Iron, EPDM Seal, 750 psi @ 150°F (MPN 0390013514). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 750 psi @ 150°F; Fitting Pipe Size: 2 in x 2 in.
GRUVLOK
GRUVLOK Metal Pipe Straight: Straight, 2 in x 2 in, Ductile Iron, EPDM Seal, 750 psi @ 150°F (MPN 0390013514). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 750 psi @ 150°F; Fitting Pipe Size: 2 in x 2 in.
GRUVLOK Clamp Coupling: Flex Bolted, 2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal, 1,000 psi (MPN 0390004521). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 1,000 psi; Fitting Pipe Size: 2-1/2 in x 2-1/2 in.
GRUVLOK
GRUVLOK Clamp Coupling: Flex Bolted, 2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal, 1,000 psi (MPN 0390004521). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 1,000 psi; Fitting Pipe Size: 2-1/2 in x 2-1/2 in.