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The 7401 Rigidlok Coupling from Gruvlok provides a rigid pipe connection. Rigidity is attained simply; it is designed in.

The Rigidlok coupling utilizes a technologically advanced housing design that conforms to and grips the pipe.

Coupling installation is fast and easy, remove only one nut and swing the housing over the gasket and into the grooves. The exclusive Guidelok feature automatically separates the grooved pipe ends and guides the coupling into position as the bolts are tightened. Precisely sized and oriented tines in the housing key section firmly grip the pipe. The combination of these designed in features produce a secure, rigid pipe joint connection. This coupling is an ideal connector for service and applications that require a rigid connection.

The Rigidlok Coupling is designed for use with roll grooved or cut grooved standard weight and roll grooved lightweight pipe, as well as with grooved-end fittings and valves. The Rigidlok Coupling maintains a rigid connection with support and hanging in conformance with applicable ANSI B31.1 Power Piping Code, ANSI B31.9 Building Service Pipe Code as well as NFPA 13 sprinkler systems.

It allows for working pressure ratings to 750 psi (51.7 bar) when used on standard wall roll or cut grooved pipe.

Recommended for water service, diluted acids, alkalies solutions, oil-free air and many other chemical services.
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Ductile Iron



Max Pressure (PSI):



100 lb-in

Temperature Range (F):

-40°F to 250°F

Min Temp (F):


Max Temp (F):



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