Argweld® Single Ended Inflatable Purging Dams
Weld Purge Dams are single ended purge systems for closure welds, T piece joints, dome end connections, where a conventional Tandem Purge System cannot be used.
Description
Single Ended Purge Dams are a low-cost alternative to plastic foam or cardboard dams. These isolating Inflatable Dams are manufactured from advanced low out-gassing rate materials. The single dams are ideal for applications of closing welds where retrieval is possible and other joints where a Tandem Pipe Purging System is not required. These simple to use, easy to insert Argweld® Inflatable Single Ended Weld Purge Dams c can be used in connection with other styles or sizes of dams elsewhere within the piping system.
Single ended Purge dams are ideal for tight bends, T piece joints, dome end connections and so on, where a Tandem Weld Purge Bladder Inflatable System cannot be used. These Inflatable Weld Purge Dams provide an excellent grip in the pipe with an effective all-round seal. Each Dam has a weld purge gas inflation hose and an exhaust port for exiting purge gas. An additional hose for extra gas input is also provided, which is useful for higher speed purging and for weld cooling to reach interpass temperature specifications. This ensures a zero colour (non oxidised) weld. There is also an additional hose for a weld Purge Monitor and Gas Detection and Analyzing Instrument to be attached.
Quick, fast, very simple to use use. Available in Sizes from 6″ to 96″.
Argweld® Inflatable Single Ended Purge Dams are a manufactured to prevent common weld problems :
• Prevents Weld coking
• Prevents Oxidation
• Prevents Weld root contamination
• Prevents Weld cut-outs
• Prevents Loss of corrosion resistance
• Prevents other issues that might occur as a result of using plastic foam or other unsuitable materials that can release massive amounts of air, oxygen, hydrogen, carbon, gases and water into the weld zone during the welding process. The Argweld® Inflatable Single Ended Purge Dams are used, when it is not possible to use Argweld® PurgElite® or Argweld® QuickPurge® Tandem Style Weld Purge Systems or the old fashioned Purge Bladder Systems.
Apart from the benefits of having a metallurgically sound weld, the difficulties of cleaning an oxidised weld are eliminated, saving vast amounts of money in labour and material costs as well as the disposal costs where acids are concerned.
Advise your technicians against spending time fabricating dams made of foam, cardboard, adhesive tape, wood and so on. Like paper, these materials contain a high percentage of water and water is very undesirable to have in the presence of a weld. As these poor materials are warmed by the welding operation, they start to out-gas their water vapour, which starts to circulate around the weld joint and combine with the weld pool to cause porosity and oxidation.
Now there is no more reason to put your welds at risk by using apparently cheaper materials, use Argweld® Inflatable Single Ended Weld Purge Dams can be purchased instead!
Size Range 6 to 96″ (150 to 2440 mm)
Manufactured for pipe diameters from 6 to 96 inches (150 up to 2440 mm), these lightweight systems are easy to inflate using the purge gas.
Leak tightness
Once the Dam is inflated and seals all around the internal circumference of the pipe, the excess inert purge gas spills out and purges the space around the weld joint, which then pushes the air out into the open atmosphere.
Proper Use
Each Dam is equipped with a purge/inflation hose (black), an extra purge gas hose (blue) as well as a hose for connecting a Weld Purge Monitor® Gas Detection and Analysing Instrument (red).
The blue hose is suitable for passing extra gas into the weld zone at any time to cool welds and meet interpass temperature specifications, or to provide extra inert gas in the event of titanium, zirconium or special stainless applications needing a guaranteed zero colour weld.
By producing bright shiny welds, there will be no porosity and there will be no loss of corrosion resistance caused by oxidation.
Part Number | Pipe Size | ID Range |
---|---|---|
APD0006 | 6” | 140 - 165 mm |
APD0007 | 7” | 165 - 191 mm |
APD0008 | 8” | 191 - 216 mm |
APD0009 | 9” | 216 - 241 mm |
APD0010 | 10” | 241 - 267 mm |
APD0011 | 11” | 267 - 292 mm |
APD0012 | 12” | 292 - 318 mm |
APD0013 | 13” | 318 - 343 mm |
APD0014 | 14” | 343 - 368 mm |
APD0015 | 15” | 368 - 394 mm |
APD0016 | 16” | 394 - 419 mm |
APD0017 | 17” | 419 - 445 mm |
APD0018 | 18” | 445 - 470 mm |
APD0019 | 19” | 470 - 495 mm |
APD0020 | 20” | 495 - 521 mm |
APD0021 | 21” | 521 - 546 mm |
APD0022 | 22” | 546 - 572 mm |
APD0023 | 23” | 572 - 597 mm |
APD0024 | 24” | 597 - 622 mm |
APD0025 | 25” | 622 - 648 mm |
APD0026 | 26” | 648 - 673 mm |
APD0027 | 27” | 673 - 699 mm |
APD0028 | 28” | 699 - 724 mm |
APD0029 | 29” | 724 - 749 mm |
APD0030 | 30” | 749 - 775 mm |
APD0031 | 31” | 775 - 800 mm |
APD0032 | 32” | 800 - 826 mm |
APD0033 | 33” | 826 - 851 mm |
APD0034 | 34” | 851 - 876 mm |
APD0035 | 35” | 876 - 902 mm |
APD0036 | 36” | 902 - 927 mm |
APD0037 | 37” | 927 - 953 mm |
APD0038 | 38” | 953 - 978 mm |
APD0039 | 39” | 978 - 1003 mm |
APD0040 | 40” | 1003 - 1029 mm |
APD0041 | 41” | 1029 - 1054 mm |
APD0042 | 42” | 1054 - 1080 mm |
APD0043 | 43” | 1080 - 1105 mm |
APD0044 | 44” | 1105 - 1130 mm |
APD0045 | 45” | 1130 - 1156 mm |
APD0046 | 46” | 1156 - 1181 mm |
APD0047 | 47” | 1181 - 1207 mm |
APD0048 | 48” | 1207 - 1232 mm |
APD0049 | 49” | 1232 - 1257 mm |
APD0050 | 50” | 1257 - 1283 mm |
APD0051 | 51” | 1283 - 1308 mm |
APD0052 | 52” | 1308 - 1334 mm |
APD0053 | 53” | 1334 - 1359 mm |
APD0054 | 54” | 1359 - 1384 mm |
APD0055 | 55” | 1384 - 1410 mm |
APD0056 | 56” | 1410 - 1435 mm |
APD0057 | 57” | 1435 - 1461 mm |
APD0058 | 58” | 1461 - 1486 mm |
APD0059 | 59” | 1486 - 1511 mm |
APD0060 | 60” | 1511 - 1537 mm |
APD0061 | 61” | 1537 - 1562 mm |
APD0062 | 62” | 1562 - 1588 mm |
APD0063 | 63” | 1588 - 1613 mm |
APD0064 | 64” | 1613 - 1638 mm |
APD0065 | 65” | 1638 - 1664 mm |
APD0066 | 66” | 1664 - 1689 mm |
APD0067 | 67” | 1689 - 1715 mm |
APD0068 | 68” | 1715 - 1740 mm |
APD0069 | 69” | 1740 - 1765 mm |
APD0070 | 70” | 1765 - 1791 mm |
APD0071 | 71” | 1791 - 1816 mm |
APD0072 | 72” | 1816 - 1842 mm |
APD0730 | 73” | 1842 - 1867 mm |
APD0074 | 74” | 1867 - 1892 mm |
APD0075 | 75” | 1892 - 1918 mm |
APD0076 | 76” | 1918 - 1943 mm |
APD0077 | 77” | 1943 - 1969 mm |
APD0078 | 78” | 1969 - 1994 mm |
APD0079 | 79” | 1994 - 2019 mm |
APD0080 | 80” | 2019 - 2045 mm |
APD0081 | 81” | 2045 - 2070 mm |
APD0082 | 82” | 2070 - 2096 mm |
APD0083 | 83” | 2096 - 2121 mm |
APD0084 | 84” | 2121 - 2146 mm |
APD0085 | 85” | 2146 - 2172 mm |
APD0086 | 86” | 2172 - 2197 mm |
APD0087 | 87” | 2197 - 2223 mm |
APD0088 | 88” | 2223 - 2248 mm |