Gruvlok
Gruvlok 390003044 Standard Coupling 3 in Iron 300 psi
Ductile-iron grooved coupling for 3 in Schedule 40 pipe, rated 300 psi at 150 °F
- Grooved ductile iron enables quick pipe alignment
- Rated 300 psi at 150 °F for reliable service
- Painted finish protects against surface corrosion
- Class 150 rating suits Schedule 40 installations
- Straight coupling joins two 3 in grooved ends
Product identity
The Gruvlok 390003044 is a standard grooved coupling made from ductile iron with a painted finish. It joins two 3-inch Schedule 40 pipe ends in mechanical piping systems. This component suits contractors and maintenance teams assembling or modifying rigid pipework.
Pressure rating
The coupling is rated for 300 psi maximum operating pressure at 150 degrees Fahrenheit and conforms to Class 150 specifications. That single figure determines whether the part matches the design pressure of the intended water, oil or compressed-air service.
Thermal and service limits
Normal use stays within the 150 degrees Fahrenheit temperature ceiling tied to the 300 psi rating. The ductile iron body and painted coating handle typical ambient conditions without extra cooling, and the rigid grooved joint adds no moving parts that generate noise or draw power.
Highlights
- Grooved ductile iron enables quick pipe alignment
- Rated 300 psi at 150 °F for reliable service
- Painted finish protects against surface corrosion
- Class 150 rating suits Schedule 40 installations
- Straight coupling joins two 3 in grooved ends
Specifications
| Brand | GRUVLOK |
|---|
Questions about this item
What does the 300 psi rating mean once the coupling is installed on a pipe?
It indicates the maximum operating pressure of 300 psi at 150 degrees Fahrenheit for Schedule 40 pipe.
What grooved standard does this Class 150 coupling follow, and what pressure does that class cap in practice?
It follows the Class 150 grooved standard, which corresponds to a 300 psi maximum operating pressure at 150 degrees Fahrenheit.
What pipe schedule and diameter are required for this 3-inch iron coupling to fit correctly?
It is designed for 3-inch Schedule 40 pipe with grooved ends on both sides.
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