Gruvlok Valves & Fittings | Raptor Supplies Deutschland


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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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.

Things To Consider


These Gruvlok couplings & fittings are small in size and require compact packaging. Hence, they are delivered in packs consisting of several pieces. They are suitable for courier shipment and not air freight.

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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.