Ridiculously quick to install. Thanks to the single-bolt design, the Grinnell G-Fire One-Bolt coupling is the fastest, easiest solution on the market—available in 1.25” to 4” sizes. All so you can get in, get the job done and move on to your next project with perfect peace of mind. And some extra time.
Pre-assembled and ready to install with center-stop pre-lubricated gaskets, the G-Fire One-Bolt coupling eliminates alternate tightening and makes joining grooved pipe faster than ever before.
New smaller sizes
The coupling is now available in 1.25” (DN32) and 1.5” (DN40) sizes. Plus, all G-Fire One-Bolt couplings are manufactured with space-saving spines that make working in tighter spaces easy.