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 a grooved pipe coupling in an 8 in x 8 in size, constructed from ductile iron with an EPDM seal. It is rated for a maximum operating pressure of 300 psi at 150° F (MPN 0390000420).

SKU 3G-OTH-468369

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 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

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

GRUVLOK
Manufacturer Part Number
0390000420
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

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 a grooved pipe coupling in an 8 in x 8 in size, constructed from ductile iron with an EPDM seal. It is rated for a maximum operating pressure of 300 psi at 150° F (MPN 0390000420).

Frequently Asked Questions

What is a GRUVLOK clamp coupling used for?

A GRUVLOK clamp coupling joins grooved-end pipe in fire protection, HVAC, and industrial piping systems. It provides a flexible, leak-tight connection rated for 300 psi at 150° F, using a ductile-iron housing and EPDM seal.

What are the specifications of the GRUVLOK 8 in x 8 in clamp coupling?

The GRUVLOK clamp coupling (MPN 0390000420) is an 8 in x 8 in grooved pipe coupling made of ductile iron with an EPDM seal. It has a maximum operating pressure of 300 psi at 150° F.

Where to buy a GRUVLOK clamp coupling worldwide?

3G Electric supplies the GRUVLOK 8 in x 8 in clamp coupling worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this coupling to your facility.

How to install a GRUVLOK grooved pipe coupling?

Installation requires aligning grooved pipe ends, placing the gasket over the joint, and securing the ductile-iron clamp with bolts torqued to manufacturer specifications. Always follow GRUVLOK's published instructions for proper sealing and pressure rating.

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, 4 in x 4 in, Ductile Iron, NBR Seal, 300 psi @ 150° F (MPN 0390010262)
GRUVLOK
GRUVLOK Clamp Coupling: Clamp, 4 in x 4 in, Ductile Iron, NBR Seal, 300 psi @ 150° F (MPN 0390010262)
GRUVLOK
GRUVLOK
GRUVLOK Rigid Coupling: Clamp, 6 in x 6 in, EPDM Seal, 700 psi, Ductile Iron, Grooved x Grooved (MPN 390213816)
GRUVLOK Clamp Coupling: Bolted, 8 in x 6 in, Ductile Iron, EPDM Seal, 500 psi, 14 in Overall Lg (MPN 0390009645)
GRUVLOK
GRUVLOK Clamp Coupling: Bolted, 8 in x 6 in, Ductile Iron, EPDM Seal, 500 psi, 14 in Overall Lg (MPN 0390009645)
Clamp Coupling: 316 Stainless Steel, 2 1/2 in x 2 1/2 in, 5 11/16 in Lg, EPDM, 750 psi, Bolted (MPN 0390065306)
GRUVLOK
Clamp Coupling: 316 Stainless Steel, 2 1/2 in x 2 1/2 in, 5 11/16 in Lg, EPDM, 750 psi, Bolted (MPN 0390065306)
GRUVLOK Clamp Coupling: Bolted, 4 in x 2 in, Ductile Iron, EPDM Seal, 500 psi, 8 7/8 in Overall Lg (MPN 0390009421)
GRUVLOK
GRUVLOK Clamp Coupling: Bolted, 4 in x 2 in, Ductile Iron, EPDM Seal, 500 psi, 8 7/8 in Overall Lg (MPN 0390009421)
GRUVLOK Clamp Coupling: 3 in x 2 1/2 in, EPDM Seal, 500 psi, Ductile Iron, Bolted, 7 1/8 in Lg (MPN 0390111680)
GRUVLOK
GRUVLOK Clamp Coupling: 3 in x 2 1/2 in, EPDM Seal, 500 psi, Ductile Iron, Bolted, 7 1/8 in Lg (MPN 0390111680)
GRUVLOK Clamp Coupling: 2 in x 2 in, NBR Seal, 750 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390101962)
GRUVLOK
GRUVLOK Clamp Coupling: 2 in x 2 in, NBR Seal, 750 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390101962)
GRUVLOK Clamp Coupling: 8 in x 8 in, EPDM Seal, 300 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390211662)
GRUVLOK
GRUVLOK Clamp Coupling: 8 in x 8 in, EPDM Seal, 300 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390211662)