Gruvlok, an Anvil International brand, is a leading provider of high-quality pipe fittings and valves. The Anvil Gruvlok Fittings catalogue includes different types of pipe fittings, such as couplings, clamps, adapters, tees, flanges and caps. These UL / ULC listed and FM approved products are used in mechanical, plumbing, oil & gas, and fire protection industries. Gruvlok pipe fittings are made from high-strength ductile iron to provide uniform strength with minimum pressure drop. Choose from a wide variety of Gruvlok valves, couplings and gaskets in different sizes and diameters on Raptor Supplies, an authorised Gruvlok distributor.