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PLCS designs these on our CAD system. They are usually custom fabricated from steel in two halves, which are bolted together on the pipe.
They are then shipped to the customer ready for installation.
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Once on-site, the pipe is prepared by grit blasting and priming.
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The mold is properly fitted on to the pipe joint.
The sealant is mixed.
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The sealant is then poured into the mold.
The mold is capped and then pressurized with bottled nitrogen to above mains pressure.
A gauge registers the sealant pressure. The nitrogen pressure is left on for 24-48 hours and then the mold is removed.
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Once removed the leak is sealed and the steel mold belongs to the customer and can be reused many times.
With a little care it will last many years. The whole operation is very simple and easy to learn by your own employees.
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