fra0204
plumbing02.htm Essentials of Plumbing

Unit I: Legends,

INSTALLING STOPS (VALVES)

A water supply service starts outside the building at the water main and then enters the building. Tap the water main with a self-tapping machine and lay a water service line with stops (valves) to enter the building in the basement or crawl space.

The water supply service water line to a building has three stops: corporation, curb, and meter.

The water supply service water line to a building has three stops: corporation, curb, and meter.

 

Installing a Corporation Stop.

  • Dig to expose the pipe at the point where the tap is to be made. This should be as near the top of the water main as possible.
  • Clean all dirt and rust off the pipe at that point.
  • Place the gasket of the water main self-tapping machine on the pipe and set the saddle of the machine on the gasket.
  • Wrap the chain around the pipe and tighten it to clamp the water main self-tapping machine to the pipe.
  • Remove the cap from the cylinder of the machine and place the combination drill and tap of the desired size in the boring bar.
  • Reassemble the machine by putting the boring bar through the cylinder and tightening the cap.
  • Open the flap valve between compartments.
  • Drill the hole by applying pressure at the feed yoke and turning the ratchet handle until the drill enters the main. (When the tap starts threading the hole, back off the feed yoke to prevent stripping the threads.)
  • Turn the boring bar until the ratchet handle can no longer be turned without extra force.
  • Remove the tap from the hole by reversing the ratchet and back the boring bar out by turning in a counterclockwise direction.
  • Close the flap valve between the upper and lower compartments.
  • Drain the water from the cylinder through the bypass.

Install a Corporation Stop

 

  • Remove the cap and drill tool, and place a corporation stop of the desired size in the boring bar. The corporation stop should be closed.
  • Reassemble the machine by putting the boring bar through the cylinder and tightening the cap.
  • Open the flap valve between compartments.
  • Turn the ratchet handle to screw the corporation stop into the pipe.
  • Drain the water from the cylinder through the bypass.
  • Remove the cap from the cylinder and unbolt the boring bar from the corporation stop.
  • Remove the lower chamber from the pipe.
  • Inspect the installation for leaks.
  • Tighten the corporation stop with a suitable wrench if it leaks.

Installing a Curb Stop.

  • Position the curb stop in a suitable place between the curb and the building.
  • Set the curb stop in a cast-iron stop box that has a variable telescopic length.

Note. The curb stop provides a shutoff of water supply outside a building.

Installing a Meter Stop.

  • Place the meter stop as near as possible to where the water service pipe enters the building.
  • Position the water meter near the meter stop valve.
  • Open the stop valve to measure the amount of water being used in the building

Note. The meter stop controls the flow of water into a building.

Install a Meteor Stop

Most of the content of this course is provided courtesy of US Army Engineer School, Fort Leonard Wood, Missouri

Copyright David L Heiserman
All rights reserved