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

GRUVLOK Clamp Coupling: Rigid Bolted, 3 in x 3 in, Ductile Iron, NBR Seal

The GRUVLOK Clamp Coupling is a rigid bolted grooved pipe coupling, available in a 3 in x 3 in size, constructed from ductile iron with an NBR seal, and rated for a maximum operating pressure of 300 psi (MPN 0390212736).

SKU 3G-OTH-468383

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

GRUVLOK
Manufacturer Part Number
0390212736
Type
3 in x 3 in, Ductile Iron, NBR Seal, 300 psi
Fitting Pipe Size
3 in x 3 in
Maximum Operating Pressure
300 psi
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GRUVLOK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GRUVLOK Clamp Coupling is a rigid bolted grooved pipe coupling, available in a 3 in x 3 in size, constructed from ductile iron with an NBR seal, and rated for a maximum operating pressure of 300 psi (MPN 0390212736).

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 rigid bolted clamp coupling used for?

A GRUVLOK rigid bolted clamp coupling joins grooved-end pipe in fire protection, HVAC, and industrial piping systems. It provides a leak-tight, mechanically rigid connection rated up to 300 psi, suitable for water, oil, and certain chemical services.

What are the specifications of the GRUVLOK 3 in x 3 in coupling?

This GRUVLOK coupling is a rigid bolted type, 3 in x 3 in, made of ductile iron with an NBR seal. Maximum operating pressure is 300 psi. The manufacturer part number is 0390212736. It is designed for grooved pipe systems requiring a rigid joint.

Where to buy GRUVLOK couplings in worldwide?

3G Electric supplies GRUVLOK rigid bolted clamp couplings worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 3 in x 3 in, 300 psi coupling.

How to install a GRUVLOK rigid coupling?

Installation requires clean, properly grooved pipe ends. Lubricate the NBR gasket, place it over one pipe end, then slide the coupling housing over the gasket. Insert bolts and tighten evenly to the manufacturer's torque specification. Always follow GRUVLOK's published installation instructions.

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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