Clear Water Legacy 

Training Modules

Valves of the Trunk Water Main System
OWWCO ID 376

Course Duration: full work day, 7 hours
CEU Value: 0.7
Trainer: Sheldon Thomas, Director, Clear Water Legacy Inc
Contact: Office: (905) 333-9203 email: info@clearwaterlegacy.com​

​The Course Will Focus On:

  • The 3 most common valves encountered in trunk water main operation, the gear-activated large diameter gate valve, the large diameter butterfly valve, and the air release/vacuum break valve.

  • Proper pre-inspection procedures prior to valve operation. Emphasis is placed upon detailed valve / chamber inspection and preparation before actual operation of the valve.

  • The ideal cycling technique for each valve type. Proper exercising technique is designed to preserve the valve mechanism, and to extend its service life.

  • The exceptional measures of preventive care that must be provided, especially to the older valves, to ensure that trunk system water valves will perform reliably when called upon.

  • A list of common valve failures and repair options to prepare trainees for problems that they might encounter during typical valve cycling exercises.

  • Several operational videos.

Target Group: 

Water distribution management and field staff ( especially those responsible for the upkeep and operation of trunk water main valves ), contractors, consultants, water system design personnel, water utility construction inspectors 


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Water Distribution System Operator Training