Asc 390013548 Gruvlok Rigidlok Grooved Coupling 4 in

Product Description

The ASC Engineered Solutions 390013548 is a Gruvlok RigidLok grooved painted coupling designed for rigid, load-bearing pipe connections in mechanical piping systems. Manufactured from ductile iron, this 4-inch coupling clamps onto grooved pipe ends to form a secure, rigid joint that resists angular deflection. The painted exterior finish provides a base layer of corrosion protection suitable for typical indoor and covered mechanical room installations. At 5.56 pounds, it is a heavy-duty component intended for use by licensed pipefitters and mechanical contractors working on fire protection, HVAC hydronic, and industrial piping systems.

This coupling is suited for 4-inch grooved pipe installations in commercial and industrial settings where rigid joint performance is required. Typical applications include chilled water and hot water hydronic loops, fire suppression mains, and process piping where pipe movement at the joint must be eliminated. It is installed on pipe that has been roll-grooved or cut-grooved to the appropriate groove specification for the 7401-E series coupling.

Key Features

• Rigid coupling design eliminates angular and linear movement at the joint
• Ductile iron construction provides high tensile strength for demanding mechanical piping applications
• 4-inch grooved end connection compatible with standard grooved pipe preparation
• Painted exterior finish for base corrosion resistance in indoor mechanical environments
• Part of the Gruvlok 7401-E series for grooved mechanical pipe joining

Compatibility

Designed as a rigid OEM-style grooved coupling for 4-inch grooved pipe systems following standard roll-groove or cut-groove pipe preparation. Specific compatible pipe schedules, gasket materials, and system pressure ratings should be verified against the Gruvlok 7401-E series engineering data for the intended application.

Installation Notes

Installation should be performed by a licensed pipefitter or mechanical contractor familiar with grooved pipe joining systems. Confirm pipe groove dimensions meet the required groove specification before assembly, and inspect the gasket and housing seats for debris prior to torquing the coupling bolts. Depressurize and drain the piping system completely before removing or replacing any grooved coupling. Follow applicable mechanical codes and the manufacturer assembly instructions for proper bolt torque sequence.

Technical Specifications

• Fitting Material: Ductile Iron
• Fitting Size: 4 inches
• Item Weight: 5.56 pounds
• Finish: Painted
• Joint Type: Rigid Grooved

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 390013548