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GRUVLOK

The Gruvlok headquarters is located at 2 Holland Way Exeter, New Hampshire. It manufactures grooved couplings, valves, fittings and hardware. Read More

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Plumbing Filter

Pipe Fittings and CouplingsView all

Black Pipe Fittings
Carbon Steel Pipe Fittings
Ductile Iron Pipe Fittings
Flexible grooved end pipes used for joint connections to reduce noise and vibration transmission in plumbing, process piping, mining, oil field piping and construction. Provide minimum pressure drop & uniform strength and are made of ductile iron / forged steel / fabricated steel
Flexible Fittings
Galvanized Pipe Fittings
Pipe Couplings
Pipe Fitting Kits
Pipe Fittings
Stainless Steel Pipe Fittings

Pipe and TubingView all

Check Valves and Backflow PreventersView all

Flow Control ValvesView all

About Gruvlok

Gruvlok, a subsidiary of Anvil International, is a leading manufacturer of pipe fittings and valves for mechanical, plumbing, oil & gas and fire protection applications. The extensive Anvil Gruvlok catalogue includes butterfly valves and iron pipe fittings, such as couplings, clamps, adapters, tees, flanges & caps. Gruvlok 7001 Series couplings are designed in accordance with ASME, ASTM and NFPA standards and are suitable for establishing a connection between similar-sized pipes. These flexible end pipes comprise a grooved connection & a ductile iron body with an EPDM gasket to provide long-term sealing in extreme weather conditions. They are capable of handling loads ranging between 12000 & 35000 lb and can withstand pressures up to 750 psi. The brand's 7700 Series butterfly valves facilitate a stem-to-disc connection for zero-backlash error and a DISC-TO-SEAT loading facility which maintains a leak-tight stem seal, irrespective of the disc position. These valves are available in bolt circle diameters of 3 & 5 inches and in gear & lever-operated handle variants.

Major Trade Names

CTS SlideLOK

These ready-to-install couplings are designed to shorten installation time. The slide action ensures trouble-free installation. For added security, the patented gasket has four separate sealing surfac...Read More

Roughneck

These couplings are used to connect plain-end or bevelled-end pipes. They are suitable for mining, process piping, manifold piping & oilfield services. The distinct gripper action ensures a secure pip...Read More

DI-LOK

These fittings prevent a galvanic cell from forming between a grooved end steel pipe & a copper tube. They can be operated at temperatures ranging from -40 to 230 degrees Fahrenheit (-40 to 110 degree...Read More

Rigidlite

These couplings provide a rigid, locked-in pipe connection to meet the requirements of rigid steel pipe systems. The rugged & lightweight housing allows quick swing-over installation, resulting in a s...Read More

Rigidlok

These couplings are intended for use with standard & light weight roll grooved pipes, as well as grooved-end fittings & valves. They provide a rigid pipe connection that allows pipe hanging practises in accordance with ASME B31 pipe codes....Read More

Frequently Asked Questions

What are the things one should take care of while using Gruvlok fittings?

Check pipe ends for proper grooved dimensions and make sure that the pipe is free of indentations, projections or other flaws that would prevent the gasket from sealing properly.
Apply a thin layer of Gruvlok lubricant to the exterior surface and seal the gasket's lips. In some cases, the entire gasket surface must be lubricated.
Ensure that no foreign particles stick to lubricated surfaces.

How to install a gasket?

Place the gasket over the pipe end, ensuring that the lip of the gasket does not overhang the pipe end.
Turn the gasket inside out and lubricate & slide it over the pipe end.
Pull the gasket into position by centring it between the grooves on each pipe after aligning the two pipe ends.
The gasket should not extend into the groove on either pipe.
Remove one nut and loosen the other nut.
Place one housing on top of the gasket, ensuring that the housing keys fit into the pipe grooves.
Swing the other housing over the gasket and into the grooves on both pipes, making certain that the tongue and recess of each housing are properly mated.
Reinsert the bolt and tighten both nuts alternately & evenly, keeping the gaps between the bolt pads evenly spaced.

How to ensure proper coupling installation?

Inspect both sides of the coupling visually to ensure that the gaps between the bolt pads are evenly spaced and parallel. Before putting the coupling into service, any deviations must be corrected.

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