How a Mechanical Hot Tapping Machine Keeps Critical Lines in Service
Shutting down an active piping system can interrupt production, building services, or essential operations. A mechanical hot tapping machine creates a controlled branch connection while the line remains pressurized. With the correct fitting, valve, cutter, pilot, and operating procedure, trained professionals can access water, sewer, or air lines without draining the entire system. What Happens During a Hot Tap? Hot tapping begins by installing a suitable saddle, sleeve, or weld-on fitting around the existing pipe. A full-port valve is attached to the fitting, and the tapping machine is mounted to the valve. The boring bar advances a cutter and pilot drill through the open valve. The cutter creates the opening while a retention pilot captures the removed pipe section, commonly called a coupon. After the cutter is retracted, the valve closes. The machine can then be removed while the pressurized system remains controlled. Why Is Avoiding a Shutdown Valuable? Draining a com...