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GRUVLOK 8 in Grooved Pipe Flange, Ductile Iron, NBR Seal, 300 psi - Grooved Pipe Flanges
GRUVLOKGrooved Pipe Flanges

GRUVLOK 8 in Grooved Pipe Flange, Ductile Iron, NBR Seal, 300 psi

The GRUVLOK Metal Pipe Flange is an 8-inch grooved pipe flange made of ductile iron with an NBR seal, rated for a maximum operating pressure of 300 psi. It has an overall length of 16 1/2 inches (MPN 0390201721).

SKU 3G-OTH-483403

Brand
GRUVLOK
Item
8 in Grooved Pipe Flange, Ductile Iron, NBR Seal, 300 psi
Part Number
0390201721
Category
Grooved Pipe Flanges
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Technical Specifications

GRUVLOK
Manufacturer Part Number
0390201721
Type
8 in, Ductile Iron, NBR Seal, 300 psi
Overall Lg
16 1/2 in
Maximum Operating Pressure
300 psi

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

Product Description

The GRUVLOK Metal Pipe Flange is an 8-inch grooved pipe flange made of ductile iron with an NBR seal, rated for a maximum operating pressure of 300 psi. It has an overall length of 16 1/2 inches (MPN 0390201721).

Frequently Asked Questions

What is a GRUVLOK metal pipe flange used for?

A GRUVLOK metal pipe flange connects grooved-end pipes in industrial fire-protection, HVAC, and process-piping systems. Its ductile-iron body and NBR seal handle pressures up to 300 psi, making it suitable for water, oil, and chemical lines where quick mechanical joining is needed.

What are the specifications of the GRUVLOK 8-inch pipe flange?

This GRUVLOK flange is 8 in, ductile iron with an NBR seal, rated for 300 psi maximum operating pressure. Overall length is 16 1/2 in. The manufacturer part number is 0390201721. It uses a grooved connection for fast, reliable assembly without welding.

Where to buy GRUVLOK pipe flanges worldwide?

3G Electric supplies GRUVLOK pipe flanges worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source genuine GRUVLOK components like this 8 in ductile-iron flange with NBR seal, ensuring you get the right part for your application.

How to install a GRUVLOK grooved pipe flange?

Installation requires aligning the flange with the grooved pipe end, inserting the NBR gasket, and tightening bolts evenly to the manufacturer's torque spec. No welding is needed. Always verify pipe-end preparation and lubricate the gasket per GRUVLOK guidelines to ensure a leak-free joint at up to 300 psi.

Used in

Common applications for GRUVLOK
Fire protection systems — GRUVLOK grooved couplings and fittings for joining sprinkler pipe, such as the 6-inch coupling (SKU 46KK70) rated for 300 psi.
HVAC piping — GRUVLOK flexible couplings (e.g., SKU 408JM0) to accommodate thermal movement in chilled water and heating systems.
Process piping — GRUVLOK concentric reducer elbow (SKU 408GX7) for changing pipe direction and size in chemical and industrial processes.
Industrial piping — GRUVLOK high-pressure couplings (e.g., SKU 408HF6) rated to 1,000 psi for demanding applications.
Mechanical piping systems — GRUVLOK rigid couplings (e.g., SKU 60XP12) for joining large-diameter pipe in water distribution.
Plumbing systems — GRUVLOK NSF 61 approved couplings for potable water applications, ensuring compliance with health standards.
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GRUVLOK Products

3G Electric supplies GRUVLOK grooved pipe flanges. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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