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

3G Electric
RFQ CartGet a QuoteSign inSign up
GRUVLOK Clamp Coupling: Clamp, 8 in x 8 in, Ductile Iron, EPDM Seal - Grooved Pipe Couplings
GRUVLOKGrooved Pipe Couplings

GRUVLOK Clamp Coupling: Clamp, 8 in x 8 in, Ductile Iron, EPDM Seal

The GRUVLOK Clamp Coupling is an 8 in x 8 in grooved pipe coupling made of ductile iron with an EPDM seal, rated for a maximum operating pressure of 300 psi at 150° F. 3G Electric interprets demand for this OEM part…

SKU 3G-OTH-468349

Brand
GRUVLOK
Item
Clamp Coupling: Clamp, 8 in x 8 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
0390211225
Type
8 in x 8 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F
Fitting Pipe Size
8 in x 8 in
Maximum Operating Pressure
300 psi @ 150° F
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 Clamp Coupling is an 8 in x 8 in grooved pipe coupling made of ductile iron with an EPDM seal, rated for a maximum operating pressure of 300 psi at 150° F. 3G Electric interprets demand for this OEM part (MPN 0390211225) across 14 industrial departments — and we supply far more than is listed — with specialist depth in combustion, pumps and controls as a trust anchor.

Frequently Asked Questions

What is a GRUVLOK clamp coupling used for?

A GRUVLOK clamp coupling joins grooved-end pipes in industrial piping systems for water, oil, or chemical transfer. It provides a flexible, leak-resistant connection that accommodates thermal expansion and vibration, commonly used in HVAC, fire protection, and process plants.

What are the specifications of the GRUVLOK 0390211225 clamp coupling?

The GRUVLOK 0390211225 is an 8 in x 8 in grooved pipe coupling made of ductile iron with an EPDM seal. It is rated for a maximum operating pressure of 300 psi at 150° F. This OEM part is designed for 8-inch grooved-end pipe.

Where to buy a GRUVLOK 0390211225 clamp coupling worldwide?

3G Electric supplies the GRUVLOK 0390211225 clamp coupling to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us to order this OEM part for your industrial piping needs.

How to install a GRUVLOK grooved pipe coupling?

To install a GRUVLOK grooved coupling, ensure pipe ends are clean and grooved per manufacturer specs. Lubricate the EPDM gasket, place it over both pipe ends, then position the ductile iron housing over the gasket. Tighten bolts evenly to the recommended torque for a secure, 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.

You might also need

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

More from GRUVLOK

View all GRUVLOK parts →
GRUVLOK Clamp Coupling: Clamp, 1 in x 1 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390002947). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 1 in x 1 in.
GRUVLOK
GRUVLOK Clamp Coupling: Clamp, 1 in x 1 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390002947). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 1 in x 1 in.
GRUVLOK Clamp Coupling: Clamp, 2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390211746). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 2-1/2 in x 2-1/2 in.
GRUVLOK
GRUVLOK Clamp Coupling: Clamp, 2 1/2 in x 2 1/2 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390211746). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 2-1/2 in x 2-1/2 in.
GRUVLOK Clamp Coupling: Clamp, 5 in x 5 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390003101). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 5 in x 5 in.
GRUVLOK
GRUVLOK Clamp Coupling: Clamp, 5 in x 5 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390003101). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 5 in x 5 in.
GRUVLOK Clamp Coupling: Clamp, 3 1/2 in x 3 1/2 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390003069). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 3-1/2 in x 3-1/2 in.
GRUVLOK
GRUVLOK Clamp Coupling: Clamp, 3 1/2 in x 3 1/2 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390003069). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 3-1/2 in x 3-1/2 in.
GRUVLOK Clamp Coupling: Clamp, 4 in x 4 in, Ductile Iron, NBR Seal, 300 psi @ 150° F (MPN 0390010262). 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, NBR Seal, 300 psi @ 150° F (MPN 0390010262). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 4 in x 4 in.
GRUVLOK
GRUVLOK
GRUVLOK Rigid Coupling: Clamp, 6 in x 6 in, EPDM Seal, 700 psi, Ductile Iron, Grooved x Grooved (MPN 390213816). Key specifications — Maximum Operating Pressure: 700 psi; Brand: GRUVLOK.
GRUVLOK Clamp Coupling: Bolted, 8 in x 6 in, Ductile Iron, EPDM Seal, 500 psi, 14 in Overall Lg (MPN 0390009645). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 500 psi; Fitting Pipe Size: 8 in x 6 in.
GRUVLOK
GRUVLOK Clamp Coupling: Bolted, 8 in x 6 in, Ductile Iron, EPDM Seal, 500 psi, 14 in Overall Lg (MPN 0390009645). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 500 psi; Fitting Pipe Size: 8 in x 6 in.
GRUVLOK Clamp Coupling: Bolted, 4 in x 2 in, Ductile Iron, EPDM Seal, 500 psi, 8 7/8 in Overall Lg (MPN 0390009421). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 500 psi; Fitting Pipe Size: 4 in x 2 in.
GRUVLOK
GRUVLOK Clamp Coupling: Bolted, 4 in x 2 in, Ductile Iron, EPDM Seal, 500 psi, 8 7/8 in Overall Lg (MPN 0390009421). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 500 psi; Fitting Pipe Size: 4 in x 2 in.