Fire Hydrant & Air Valve Freezing

MCL have successfully freeze isolated thousands of branches off high pressure water mains in order to allow fire hydrant or air valves to be replaced without the need to switch off or reduce the pressure in the water main. Our experienced technicians and fully equipped service vehicles have worked in some of the most remote areas of the country. The process is fast and reliable resulting in a cost effective replacement method.


  • Fast hydrant change (approx 45 mins) total

  • No consumer disruption/notification

  • No depressurisation

  • No dirty water problems

  • No water losses

  • Safe and reliable


Pipe freezing is becoming the preferred method of isolating fire hydrants during the change
out process.