1. Pipe & Hose Fittings (Hydraulics/Pneumatics) Offered
  2. sku: 5491235506508622
  3. GRUVLOK 0390002988

0390002988 GRUVLOK Flexible Coupling Ductile Iron

0390002988 GRUVLOK Flexible Coupling Ductile Iron
Product Information
BrandGRUVLOK
Manufacturer Part Number0390002988
Custom BundleNO
Country/region Of ManufactureUS
ColorORANGE
TypePIPES, VALVES FITTINGS FITTINGS DUCTILE IRON PIPE FITTINGS
Weight1.3400
Length4.000
Width3.100
FeaturesFLEXIBLE COUPLING, DUCTILE IRON, PAINTED, CLASS CLASS 150, FOR PI

Review GRUVLOK Flexible Coupling Ductile Iron 1/2 In

The Gruvlok 0390002988 flexible coupling is a crucial component in various piping systems, designed for use with ductile iron pipes. Its primary function is to connect and transmit fluid pressure between two pipes while accommodating angular misalignment and thermal expansion.

This coupling boasts a robust, one-piece design constructed of ductile iron, ensuring durability and strength. The 1/2-inch size makes it suitable for moderately-sized piping applications. The external threads on both ends of the coupling permit easy installation and disassembly using standard pipe threading tools.

One of the most notable features of the Gruvlok 0390002988 flexible coupling is its flexibility. It can bend and flex to accommodate minor angular misalignments between the connected pipes. This feature reduces the need for complex pipe alignment and significantly simplifies piping installation and maintenance.

The interior of the coupling houses a flexible element, typically a bellows or a diaphragm, that allows for expansion and contraction due to thermal changes in the fluid. This design helps prevent pipe damage or leaks caused by excessive pressure changes or thermal stress.

The Gruvlok 0390002988 flexible coupling is suitable for use with various fluids, including water, steam, and industrial chemicals. Its high-quality construction and versatile design make it an indispensable addition to any piping system, providing reliable, long-lasting performance.

In summary, the Gruvlok 0390002988 flexible coupling is a durable and versatile component that effectively connects and transmits fluid pressure between ductile iron pipes. Its one-piece ductile iron construction, flexible design, and ease of installation make it a popular choice for piping applications requiring misalignment compensation and thermal expansion accommodation.

Pros and Cons of Buying Gruvlok 0390002988 Flexible Coupling for Ductile Iron Pipes (1/2 Inch)

Introduction:

The Gruvlok 0390002988 is a flexible coupling designed for joining ductile iron pipes with a diameter of 1/2 inch. This product is widely used in various industries for transferring fluids, especially in applications where pipe movements or vibrations are common. In this analysis, we will discuss the key advantages and disadvantages of purchasing a Gruvlok 0390002988 flexible coupling.

Pros:

1. Leak-free connection: The Gruvlok coupling uses a gasket made of EPDM (Ethylene Propylene Diene Monomer) rubber, ensuring a tight seal and preventing leakages.

2. Flexibility: The flexible design of this coupling allows it to accommodate pipe movements and vibrations, making it an ideal solution for applications in industrial settings.

3. Easy installation: This coupling can be installed without the need for welding or special tools, saving time and resources.

4. Durability: Made of ductile iron, the Gruvlok coupling is highly resistant to corrosion and can withstand high pressures.

Cons:

1. Cost: Compared to other types of pipe couplings, the Gruvlok may be more expensive. However, the benefits it offers, such as leak-free connections and flexibility, may justify the additional cost.

2. Size limitations: The Gruvlok 0390002988 is designed for 1/2 inch pipes only. Users seeking couplings for larger pipe diameters may need to consider other options.

Conclusion:

The Gruvlok 0390002988 flexible coupling for ductile iron pipes (1/2 inch) offers several advantages, including leak-free connections, flexibility, easy installation, and durability. Although it may be more costly than some alternative solutions, the benefits it provides may outweigh the additional expense. Ultimately, the decision to purchase this product depends on the specific requirements of the application and the priorities of the buyer.

Recommendation:

For applications involving 1/2 inch ductile iron pipes, where leak-free connections, flexibility, and easy installation are essential, the Gruvlok 0390002988 flexible coupling is an excellent choice. Despite the higher cost, the advantages it offers make it a worthwhile investment for various industries, including water supply, oil and gas, and chemical processing.

Details:

Gruvlok flexible coupling,ductile iron, 1/2 in: coupling, ductile painted, class 150, for pipe schedule 40, in, grooved, 3 300 psi 150 degrees f maximum operating pressure details. Light industrial. Electrical outlet's. Electrical boxes.

And enclosures. Receptacles.

specifications pipehosefit:

  • brand: Gruvlok
  • mpn: 0390002988
  • custom bundle: No
  • country/region of manufacture: Us
  • color: Orange
  • type: Pipes, Valves Fittings Fittings Ductile Iron Pipe Fittings
  • weight: 1.3400
  • length: 4.000
  • width: 3.100
  • features: Flexible Coupling, Ductile Iron, Painted, Class Class 150, For Pi

offer pipehosefit:

  • started: june 9, 2025
  • availability: in stock
  • options: ship-to-home
  • sold #: 21
  • prices: $53.89–$84.99
  • item condition:
    • New – Open box
    • New

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  • other
  • credit card: visa
  • wallet: google-pay

returns pipehosefit:

  • paid by: seller
  • time: 60 days
  • policy: returns accepted
  • method: money back

shipping pipehosefit:

  • transit: 3-3 days
  • class: standard
  • type: fixed
  • service: standard

general pipehosefit:

  • category: Business & Industrial > Adapters > Pipe Hose Fittings

seller pipehosefit:

  • city: USA
  • # reviews: 1234609
  • rating: 99.6%
rating: 99.6% out of 100 based on 609 user ratings.
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