Stop And Waste

This is a must in areas that have hard freezes. The stop and waste is a shut off valve that drains the down stream water from a main line. It is generally installed at the point of connection that is leading to the sprinkler system (generally close to the meter or a building). The Weep hole allows water to escape when the valve is closed. Thus a stop and waste is regularly installed at a depth that is sufficient to prevent freezing of the live side of the water main.

Stop and waste threaded

For the sake of stability, I generally install the Stop and Waste with brass nipples, I make the change to PVC after the brass elbow on the down stream side of the valve.

Typical Installation

Stop and Waste installation

Typical Parts List For Stop And Waste Installation

  • Compression Tee for installation with existing main line piping.
  • Stop And Waste
  • 2 brass nipples 6 inches long
  • brass 90
  • Toe Nipple or PVC Nipple
  • Slip Coupling or Female Adapter
  • 5 feet of 2 inch pipe for sleve
  • 2 inch Snug Cap
  • 10 inch round irrigation box
  • Teflon tape
  • Gravel for bedding the Stop and Waste

Sprinkler System Calculator and parts list

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