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

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

The GRUVLOK Clamp Coupling is a grooved pipe coupling in a 3 in x 3 in size, constructed of ductile iron with an NBR seal, rated for a maximum operating pressure of 300 psi at 150° F (MPN 0390013688). 3G Electric…

SKU 3G-OTH-468204

Brand
GRUVLOK
Item
Clamp Coupling: Clamp, 3 in x 3 in, Ductile Iron, NBR Seal
Category
Grooved Pipe Couplings
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

GRUVLOK
Manufacturer Part Number
0390013688
Type
3 in x 3 in, Ductile Iron, NBR Seal, 300 psi @ 150° F
Fitting Pipe Size
3 in x 3 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 3 in x 3 in size, constructed of ductile iron with an NBR seal, rated for a maximum operating pressure of 300 psi at 150° F (MPN 0390013688). 3G Electric interprets customer demand and delivers this genuine industrial component across 14 departments — with specialist depth in combustion, pumps and controls — ensuring you get the right answer, not just a catalog.

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 NBR seal.

What are the specifications of the GRUVLOK 0390013688 coupling?

This GRUVLOK clamp coupling is 3 in x 3 in, made of ductile iron with an NBR seal. Maximum operating pressure is 300 psi at 150° F. The manufacturer part number is 0390013688. It is a grooved pipe coupling for mechanical piping connections.

Where to buy GRUVLOK clamp couplings worldwide?

3G Electric supplies GRUVLOK clamp couplings worldwide. We handle full logistics and customs clearance to deliver this genuine component to your site. Contact us for availability and lead time on the 0390013688 coupling.

How to install a GRUVLOK grooved pipe coupling?

Installation requires clean, properly grooved pipe ends. Lubricate the NBR gasket, place it over both pipe ends, then position the ductile-iron housing over the gasket. Tighten bolts evenly to the torque specified by GRUVLOK. Always follow the manufacturer's 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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