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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
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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
View Full Spec Sheet

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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).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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.

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GRUVLOK Clamp Coupling: 3 in x 2 1/2 in, EPDM Seal, 500 psi, Ductile Iron, Bolted, 7 1/8 in Lg (MPN 0390111680). Key specifications — Maximum Operating Pressure: 500 psi; Brand: GRUVLOK.
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GRUVLOK Clamp Coupling: 2 in x 2 in, NBR Seal, 750 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390101962). Key specifications — Maximum Operating Pressure: 750 psi; Brand: GRUVLOK.
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GRUVLOK Metal Pipe Straight: Straight, 4 in x 4 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390007409). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 4 in x 4 in.
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GRUVLOK Metal Pipe Straight: Straight, 4 in x 4 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F (MPN 0390007409). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 4 in x 4 in.
GRUVLOK Clamp Coupling: 2 in x 2 in, EPDM Seal, 300 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390209021). Key specifications — Maximum Operating Pressure: 300 psi; Brand: GRUVLOK.
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GRUVLOK Clamp Coupling: 2 in x 2 in, EPDM Seal, 300 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390209021). Key specifications — Maximum Operating Pressure: 300 psi; Brand: GRUVLOK.
GRUVLOK Couplings: Rigid Bolted, 2 1/2 in x 2 1/2 in, Ductile Iron, NBR Seal, 750 psi (MPN 0390010221). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 750 psi; Fitting Pipe Size: 2-1/2 in x 2-1/2 in.
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Clamp Coupling: 316 Stainless Steel, 6 in x 6 in, 10 7/8 in Lg, EPDM, 750 psi, Bolted (MPN 0390065314). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 750 psi; Movement Tolerance: Rigid; Fitting Pipe Size: 6 in x 6 in.
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GRUVLOK Clamp Coupling: Clamp, 2 in x 2 in, Ductile Iron, NBR Seal, 300 psi @ 150° F (MPN 0390013662). Key specifications — Brand: GRUVLOK; Maximum Operating Pressure: 300 psi @ 150° F; Fitting Pipe Size: 2 in x 2 in.
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