Gruvlok
Gruvlok 390013530 Rigidlok Coupling 3 in Iron 750 psi
A ductile iron grooved coupling rated 750 psi for Schedule 40 pipe joins 3-inch lines in Class 150 systems
- Rigid grooved joint for 3 in pipe
- Ductile iron body handles 750 psi at 150 °F
- Class 150 rating matches Schedule 40 systems
- Painted finish resists corrosion in service
- Direct mechanical coupling simplifies installation
Gruvlok 3 in Rigidlok Coupling
The Gruvlok Rigidlok Coupling is a straight ductile iron fitting painted for corrosion resistance. It joins two 3 in grooved pipe ends in Schedule 40 systems rated for Class 150 service. The coupling handles a maximum operating pressure of 750 psi at 150 degrees F, making it suitable for industrial piping installations.
Installers needing a rigid grooved joint for 3
This coupling suits installers who require a rigid, angled connection on 3 in Schedule 40 pipe at Class 150 pressure ratings. It is not for systems that need flexible movement, vibration isolation, or expansion compensation. Buyers working with different pipe schedules, larger diameters, or higher pressure classes must select alternative fittings.
750 psi maximum operating pressure at 150 degrees F
The 750 psi rating at 150 degrees F is the single specification that decides fit. If the design pressure or temperature exceeds these limits, the coupling is not the correct part. Verify the system pressure class and operating temperature against this figure before purchase.
Highlights
- Rigid grooved joint for 3 in pipe
- Ductile iron body handles 750 psi at 150 °F
- Class 150 rating matches Schedule 40 systems
- Painted finish resists corrosion in service
- Direct mechanical coupling simplifies installation
Specifications
| Brand | GRUVLOK |
|---|
Questions about this item
What pipe schedule does the 3 in Rigidlok coupling accept?
The coupling is rated for Schedule 40 pipe, so it matches that wall thickness on a 3 in grooved line.
What material and finish does the 3 in Rigidlok coupling use?
It is made from ductile iron with a painted finish, giving a rigid joint for grooved pipe systems.
How do you install the 3 in Rigidlok coupling on grooved pipe?
Slide the coupling over the two grooved pipe ends, insert the gasket, then tighten the bolts evenly to the specified torque to seal the joint at up to 750 psi.
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