Seized Main Stop Tap
The internal stop tap won't turn, so you have no way to isolate the water in an emergency..
The internal stop tap won't turn, so you have no way to isolate the water in an emergency.
What is actually going on
The internal stop tap won't turn, so you have no way to isolate the water in an emergency.
The realistic causes, in order
Years without operation, allowing the gland and spindle to seize A brass gate valve that has corroded internally and no longer seals even when it turns A stop tap buried behind a kitchen unit and physically inaccessible
What we test on site
Whether the external stop tap in the footpath can be used to isolate for the swap Pipe condition either side, since old pipework often needs a short section renewed Whether a lever valve and a drain point can be added while access is open
Safe checks to make with a seized stop tap
- Try the valve gently — forcing a seized stop tap can snap the spindle and cause a flood
- Locate your external stop tap and check you have a key that fits
- Everyone in the house should know where the stop tap is and be able to turn it. A seized one is a genuine risk, not a minor inconvenience.
Who does the work
- Gas Safe registered engineers — registration 554328
- Worcester Bosch accredited installer
- John The Plumb Ltd, company registration 10026483
Get a seized stop tap diagnosed properly
Replacement with a quarter-turn lever valve, ideally with a drain point, makes future work far simpler.
Questions we get asked
Where does a seized stop tap usually start in the pipework?
Years without operation, allowing the gland and spindle to seize
What normally puts a seized stop tap right?
Replacement with a quarter-turn lever valve, ideally with a drain point, makes future work far simpler.
Is it safe to keep using the system with a seized stop tap?
Everyone in the house should know where the stop tap is and be able to turn it. A seized one is a genuine risk, not a minor inconvenience.