Hot / Wet / Cold Tapping
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(Shown: Standard Valve used when tapping to install lateral lines.
SANDWICH® Valve Option allows temporary plugging operation.)
1. A fitting is permanently secured to the line.
2. A permanent valve is installed on the fitting. |
3. A TDW Tapping Machine is installed on the fitting, and the valve is opened. After pilot drill penetrates, the tapping machine fills with product, and air is purged from the housing. The tap is make through the line and the coupon is retained. |
4. The valve is closed, and the tapping machine is removed. A branch connection is added, and the valve is opened. The new connection is ready to put into service. This field-proven TDW Procedure is quick and precise. Plugging / Completion Plug Systems |
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| Typical TDW Hot Tapping Procedure |
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| Materials, Applications and Standard Specifications |
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Materials:
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Steel , cast/ductile iron, stainless steel, concrete, asbestos cement, plastic and others. |
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Pipelines:
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Onshore, offshore, transmission, distribution, water/waste water, plant piping, refinery, chemical plants, steel mills, power plants, steam lines, buildings, cooling systems and others. |
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Specs:
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Diameters - 1/2" through 102"
Operating Pressures - Up to 2,200 psi
Operating Temperatures - Up to 700° F. |
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