As a London based Industrial Valve Repair Contractor, our Pipe Freezing Services were required for an LTHW valve repair. The existing valve was letting by water therefore was failing, not allowing isolation of the LTHW system. Read our case study below:
Client – Ashford FM
Site Location – Enfield Civic Centre, London EN1
Contract Duration – One Shift
Liquid Nitrogen Pipe Freezing Services
Firstly, our team gained access to the ceiling void via step ladders and then removed ceiling tiles, light fittings, ventilation reel and pipework insulation.
After that, we installed a freeze jacket around the pipework and carried out two 50mm liquid nitrogen pipe freezes to the LTHW pipework. One freeze jacket on the flow and one on the return, to stop the flow and form a freeze plug. This then allowed for our engineers to safely carry out the valve repair.
Following on from this, we cut the pipework and drained the water into our engineer’s bins and disposed of in local foul drains.
To install the new valve, we chose to use a steel mapress fitting. We did this because a BSP mapress is crimped to secure the valve fitting onto the pipe. Our engineers stripped out the existing 50mm BSP quarter turn leaver valve and associated pipework. Next we securely installed the male iron carbon steel mapress fitting and new 50m valve. Our engineers then completed the pipework modification connection with two 90-degree elbows and two 45-degree elbows..
Lastly, we released both freezes and check for any leaks. Re-instated 54 mm pipework insulation, ceiling tiles, lights and ventilation reel.
The site was left clean and tidy, all redundant items upon completion of our work were disposed of at a licensed refuse/recycling facility.
Result
A quick turn around time for the valve repair works with minimal disruption to services. There is no longer a leaking LTHW pipework.
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Looking to carry out industrial pipework maintenance?
IDWe Ltd are leading Commercial M&E Contractor, as well as Pipe Freezing Services and Valve Fitting Services also provide Hot Tapping Services and more. Offering quality services across London, Kent, Surrey, Essex, Surrey, Hertfordshire and the wider area for over 30 years.
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