grooved pipe fittings

Grooved Couplings, Fittings, Flanges and Valves


Gruvlok Logo

From Mechanical/Industrial, plumbing and mining to energy and fire protection, Gruvlok® grooved products are designed to withstand the most rugged applications while providing durable and easy installation, and ultimately, saving time and money on any project requiring grooved over weld.

Through a combination of roll-grooving and two-bolt coupling design, Anvil’s innovative product line joins piping and other components into a single rugged yet flexible system. This makes Gruvlok products ideal for a variety of applications — particularly in tight spaces.

With a Gruvlok union at every joint, maintenance is as simple and flexible as the installation. Every component in a Gruvlok system is easily accessed and replaceable, so that you can make repairs without resorting to total shut-down.


SPF™ grooved couplings and fittings provide a rigid or flexible pipe connection for fire protection systems with dependable seals over a range of internal pressure situations. SPF also offers Short Pattern Products through 8" to meet all of your fire protection needs.

Quick and easy installation and durable material construction make these SPF couplings and fittings ideal for almost any fire protection application in both wet and dry systems. The coupling’s housing is made from ductile iron conforming to ASTM-A536, Grade 65-45-12. They are UL/ULC Listed and FM Approved and range in size from 1 1⁄4" to 12". They are also offered with a pre-lubricated gasket.