Where you will find one
- Downstream of the water meter on a business's incoming main
- Where the sprinkler system tees off the incoming main
- Boiler make-up lines, lawn irrigation and chemical feed units
- Supplies to labs, salons, car washes and food plants
How we run the test
- Match the assembly make, size and spot to your paperwork.
- Notify occupants that water will be off briefly.
- Attach the test kit to the test cocks and check each valve and relief port.
- Record the readings and whether the device passed.
- Restore water and confirm normal pressure.
If the assembly fails
When a unit fails, the cause is usually a speck of grit under a check, a hardened rubber disc or a sticky relief port. Many can be rebuilt with a repair kit; older units may be cheaper to replace. We explain both options and the effect on your downtime before any parts are ordered.
Records and the Region
- Durham Region has required testing of premise-isolation devices on many non-residential properties; confirm the current rules with the Region
- Keep test reports together so the next test is quicker
- Note any changes to equipment that might need extra protection