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

GRUVLOK Clamp Coupling: Flex Hinged, 1 1/4 in x 1 1/4 in, Ductile Iron, NBR Seal

The GRUVLOK Clamp Coupling: Flex Hinged is a grooved pipe coupling with a 1-1/4 in x 1-1/4 in fitting pipe size, constructed from ductile iron with an NBR seal, and rated for a maximum operating pressure of 300 psi…

SKU 3G-OTH-468376

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

GRUVLOK
Manufacturer Part Number
0390200038
Type
1 1/4 in x 1 1/4 in, Ductile Iron, NBR Seal, 300 psi
Fitting Pipe Size
1-1/4 in x 1-1/4 in
Maximum Operating Pressure
300 psi
View Full Spec Sheet

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GRUVLOK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GRUVLOK Clamp Coupling: Flex Hinged is a grooved pipe coupling with a 1-1/4 in x 1-1/4 in fitting pipe size, constructed from ductile iron with an NBR seal, and rated for a maximum operating pressure of 300 psi (MPN 0390200038). 3G Electric interprets this demand and sources this genuine industrial coupling 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 flex hinged clamp coupling used for?

A GRUVLOK flex hinged clamp coupling joins grooved-end pipes in fire protection, HVAC, and industrial piping systems. Its hinged design allows quick installation and maintenance without full disassembly, saving time in tight spaces.

What are the specifications of the GRUVLOK 0390200038 coupling?

The GRUVLOK 0390200038 is a 1-1/4 in x 1-1/4 in flex hinged clamp coupling made of ductile iron with an NBR seal. It has a maximum operating pressure of 300 psi and is designed for grooved pipe systems.

Where to buy GRUVLOK couplings worldwide?

3G Electric supplies GRUVLOK couplings worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source genuine GRUVLOK parts and deliver them to your site, regardless of location.

How to install a GRUVLOK flex hinged coupling?

To install a GRUVLOK flex hinged coupling, align the coupling over the grooved pipe ends, close the hinge, and tighten the bolts evenly to the manufacturer's torque specification. Ensure the NBR seal is properly seated and lubricated 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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