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GRUVLOK Clamp Coupling: 3 in x 3 in, NBR Seal, 750 psi, Ductile Iron - Grooved Pipe Couplings
GRUVLOKGrooved Pipe Couplings

GRUVLOK Clamp Coupling: 3 in x 3 in, NBR Seal, 750 psi, Ductile Iron

The GRUVLOK Clamp Coupling is a 3 in x 3 in grooved pipe coupling with a ductile iron body and NBR seal, rated for a maximum operating pressure of 750 psi. It features a Grooved x Grooved x Grooved connection type…

SKU 3G-OTH-460068

Brand
GRUVLOK
Item
Clamp Coupling: 3 in x 3 in, NBR Seal, 750 psi, Ductile Iron
Category
Grooved Pipe Couplings
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Technical Specifications

GRUVLOK
Manufacturer Part Number
0390101988
Type
NBR Seal, 750 psi, Ductile Iron, Grooved x Grooved x Grooved
Maximum Operating Pressure
750 psi
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GRUVLOK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GRUVLOK Clamp Coupling is a 3 in x 3 in grooved pipe coupling with a ductile iron body and NBR seal, rated for a maximum operating pressure of 750 psi. It features a Grooved x Grooved x Grooved connection type (MPN 0390101988). 3G Electric interprets demand and delivers this genuine industrial component across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

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 rigid or flexible connection rated up to 750 psi, using a ductile iron housing and NBR seal for reliable sealing in water and light oil applications.

What are the specifications of the GRUVLOK 0390101988 coupling?

The GRUVLOK 0390101988 is a 3 in x 3 in grooved pipe coupling with a ductile iron body, NBR seal, and Grooved x Grooved x Grooved connection. It has a maximum operating pressure of 750 psi and is designed for use with Schedule 40 or 80 steel pipe.

Where to buy GRUVLOK clamp couplings worldwide?

3G Electric supplies genuine GRUVLOK clamp couplings worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source and deliver this coupling along with components across 14 departments, including pumps and controls.

How to install a GRUVLOK grooved pipe coupling?

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