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GRUVLOK Clamp Coupling: Clamp, 1 1/4 in x 1 1/4 in, Ductile Iron, EPDM Seal - Grooved Pipe Couplings
GRUVLOKGrooved Pipe Couplings

GRUVLOK Clamp Coupling: Clamp, 1 1/4 in x 1 1/4 in, Ductile Iron, EPDM Seal

The GRUVLOK Clamp Coupling is a grooved pipe coupling in a 1-1/4 in x 1-1/4 in size, constructed from ductile iron with an EPDM seal. It is rated for a maximum operating pressure of 300 psi at 150° F. 3G Electric…

SKU 3G-OTH-468161

Brand
GRUVLOK
Item
Clamp Coupling: Clamp, 1 1/4 in x 1 1/4 in, Ductile Iron, EPDM Seal
Category
Grooved Pipe Couplings
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Technical Specifications

GRUVLOK
Manufacturer Part Number
0390211027
Type
1 1/4 in x 1 1/4 in, Ductile Iron, EPDM Seal, 300 psi @ 150° F
Fitting Pipe Size
1-1/4 in x 1-1/4 in
Maximum Operating Pressure
300 psi @ 150° F
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GRUVLOK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GRUVLOK Clamp Coupling is a grooved pipe coupling in a 1-1/4 in x 1-1/4 in size, constructed from ductile iron with an EPDM seal. It is rated for a maximum operating pressure of 300 psi at 150° F. 3G Electric sources this genuine OEM component and supports your industrial piping needs across 14 departments, with specialist expertise in combustion, pumps and controls.

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 leak-tight, flexible connection that accommodates thermal expansion and vibration, commonly used in HVAC, fire protection, and process plants.

What are the specifications of the GRUVLOK 0390211027 coupling?

The GRUVLOK 0390211027 is a 1-1/4 in x 1-1/4 in ductile iron clamp coupling with an EPDM seal. It is rated for a maximum operating pressure of 300 psi at 150° F. This grooved pipe coupling is designed for reliable sealing in moderate-temperature industrial applications.

Where to buy GRUVLOK clamp couplings worldwide?

3G Electric supplies genuine GRUVLOK clamp couplings worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this OEM component to your facility. Contact us for a quote and lead time on your order.

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.

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GRUVLOK Clamp Coupling: 8 in x 8 in, EPDM Seal, 300 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390211662). Key specifications — Maximum Operating Pressure: 300 psi; Brand: GRUVLOK.
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GRUVLOK Clamp Coupling: 8 in x 8 in, EPDM Seal, 300 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390211662). Key specifications — Maximum Operating Pressure: 300 psi; Brand: GRUVLOK.
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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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.
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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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.
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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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.
GRUVLOK Clamp Coupling: 10 in x 10 in, EPDM Seal, 500 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390101889). Key specifications — Maximum Operating Pressure: 500 psi; Brand: GRUVLOK.
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GRUVLOK Clamp Coupling: 10 in x 10 in, EPDM Seal, 500 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390101889). Key specifications — Maximum Operating Pressure: 500 psi; Brand: GRUVLOK.
GRUVLOK Clamp Coupling: 4 in x 4 in, NBR Seal, 750 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390101996). Key specifications — Maximum Operating Pressure: 750 psi; Brand: GRUVLOK.
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GRUVLOK Clamp Coupling: 4 in x 4 in, NBR Seal, 750 psi, Ductile Iron, Grooved x Grooved x Grooved (MPN 0390101996). Key specifications — Maximum Operating Pressure: 750 psi; Brand: GRUVLOK.