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Single Ended for Closing Welds!
Argweld® Inflatable Weld Pipe Purging Dams are a low-cost alternative to plastic foam or cardboard dams that are still very frequently hand made at great expense by welders on site.
Inflatable Dams are manufactured from advanced low outgassing rate materials and are ideal for applications where Argweld® Tandem Pipe Purging Systems or the older style Purge Bladder Systems are less suitable.
These simple to use, easy to insert Argweld® Inflatable Weld Purge Dams can be purchased for any diameter within their manufacturing range and can be used in connection with other styles or sizes of dams elsewhere within the piping system.
Inflatable Weld Purging Systems have been specifically designed for tubes, pipes and pipelines to achieve oxide free, porosity free, clean, safe welds.
Old fashioned pipe purge bladders and tandem purging gas bags usually burst. Therefore our systems are specifically engineered with anti-burst features to avoid any risk of bursting. Our Pipe Purge Systems can be used time and time again.
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Read MoreExcellent Grip and Perfect Seal
Single Ended Dams for closing welds where retrieval is possible and other joints where a Tandem Pipe Purging System is not required.
Ideal for tight bends, T piece joints, dome end connections and so on, where an old fashioned Tandem Weld Purge Bladder Inflatable System or a modern Argweld® Pipe Purging System cannot be used.
This range of low cost, single ended Inflatable Weld Purge Dams is an innovative product, manufactured and designed by Huntingdon Fusion Techniques HFT®.
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, an exhaust port for exiting purge gas and a hose for extra gas input for higher speed purging, for weld cooling to reach interpass temperature specifications and for the assurance of obtaining a zero colour (non oxidised) weld. There is also an additional hose for a Weld Purge Monitor® to be attached.
Quick, fast, very simple to use use.
Argweld® is a recognised trademark in the industry and our family range of products is here to help you achieve that better weld and save money at the same time.
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Read MoreStandard and Custom Made Specials
Argweld® Inflatable Weld Purging Dams are a manufactured innovative designed and engineering solution to many welding problems, such as:
• Weld coking
• Oxidation
• Weld root contamination
• Weld cut-outs
• Loss of corrosion resistance
• 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.
Custom Made Specials
We can design and manufacture custom made special Weld Purging Dams for a variety of applications. One application included purging a pipe where one pipe was inside the other. Our design force got to work and manufactured a special ‘doughnut like’ Weld Purge Dam which fits on the inside of the larger pipe to go over the inner pipe so that the space between the two pipes can be protected.
These Argweld® Inflatable Weld Purging Dams are suitable for 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 benefit 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.
Even today, in this quality controlled environment, many companies are still allowing their technicians to spend many hours fabricating dams made of foam, sponge, 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 outgas their water vapour, which begins 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 welds at risk by using apparently cheaper materials, when for a very low cost, Argweld® Inflatable Weld Purge Dams can be purchased instead!
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Read MoreTechnical Data and Specification
Size Range 6 to 88" (152 to 2,235 mm)
Manufactured for pipe diameters from 6 to 88 inches (152 up to 2,235 mm), these lightweight systems are easy to inflate using the purge gas and are heat resistant up to 90ºC (194ºF).
The Argweld® Weld Purge Dams are manufactured from the same material as our range of QuickPurge® Inflatable Tube and Pipe Purging Systems, which are rugged and can be used time and time again.
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 (oxygen) 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 an exhaust hose for connecting a Weld Purge Monitor® (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.
Four pull tags are located around the circumference of the Weld Purge Dam, so rope, pull wires or slings can be attached for retrieval of the deflated system, if required.
By producing bright shiny welds, there will be no porosity and no loss of corrosion resistance caused by oxidation.
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Read MoreFrequently Asked Questions
1.0 What sizes are the Argweld® Weld Purge Dams available in?
They are manufactured in sizes 6 to 88” (152 to 2,235 mm).
2.0 Are the Weld Purge Dams re-useable?
Yes, they are used from the same material as our range of QuickPurge® Inflatable Tube and Pipe Purging Systems, which are rugged and can be used for multiple welds.
3.0 What are the Weld Purge Dams made from?
Predominantly low vapour pressure, flexible, durable, heat resistant materials (up to 80ºC (176ºF)) selected for longevity.
4.0 How long will Argweld® Weld Purge Dams remain inflated?
Continuous purging will ensure effective sealing and deflation is instant once the argon feed hose has been disconnected.
5.0 How do I measure the residual oxygen content?
Weld Purge Dams are manufactured as standard with an exhaust to connect a Weld Purge Monitor®, which will measure the oxygen level as low as 10 ppm.
6.0 How do I remove the Weld Purge Dam from the pipe?
Four pull tags are located around the circumference of the Weld Purge Dam, so rope, pull wires or slings can be attached for retrieval of the deflated system, if required.
7.0 How close can they be setup in relation to the weld?
It is recommended that the Weld Purge Dam is placed at least 4” away from the welding zone.
Each Weld Purge Dam is heat resistant up to 80ºC (176ºF).
However, because the Dam will be placed in an area where argon gas, which is extremely cold, is being brought into the welding zone, it is unlikely that the dam will become over-heated.
In the event that you are welding thick pipework with multi pass welds and the heat transfer is high enough to overheat the purge dam, there are heat resistant covers available that protect the dams.
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Read MoreShipping Information, Weights and Dimensions
Customs Tariffs:
| European Customs Tariff: | 4016 9500 |
| International Customs Tariff: | 4016 999 0900 |
| United States Customs Tariff: | 8515 90 2000 |
| Canada Customs Tariff: | 8515 90 2000 |
Product Codes and Sizes:
Argweld® Inflatable Weld Purging Dams from sizes 6 to 88" (152 to 2,235 mm).
Stock product codes APD (plus size required).
All Argweld® Inflatable Weld Pipe Weld Purge Dams are available for immediate delivery in the smaller size range 6 to 48" (152 to 1,219 mm).
Sizes above 48" (1,219 mm) are manufactured to order and can take up to 2 weeks subject to quantities required and prior orders.
| All dimensions are based on the imperial system. Sizes shown in mm are only mathematic conversions of the imperial dimensions and are not intended to represent metric standards. | |||||
| PART Nº | PRODUCT SIZES | EXPANSION RANGE | WEIGHT | ||
| INCH | MM | ||||
| APD006 APD007 APD008 APD009 APD010 APD011 APD012 APD013 APD014 APD015 APD016 APD017 APD018 APD019 APD020 APD021 APD022 APD023 APD024 APD025 APD026 APD027 APD028 APD029 APD030 APD031 APD032 APD033 APD034 APD035 APD036 APD037 APD038 APD039 APD040 APD041 APD042 APD043 APD044 APD045 APD046 APD047 APD048 APD049 APD050 APD051 APD052 APD053 APD054 APD055 APD056 APD057 APD058 APD059 APD060 APD061 APD062 APD063 APD064 APD065 APD066 APD067 APD068 APD069 APD070 APD071 APD072 APD073 APD074 APD075 APD076 APD077 APD078 APD079 APD080 APD081 APD082 APD083 APD084 APD085 APD086 APD087 APD088 |
6" 7" 8" 9" 10" 11" 12" 13" 14" 15" 16" 17" 18" 19" 20" 21" 22" 23" 24" 25" 26" 27" 28" 29" 30" 31" 32" 33" 34" 35" 36" 37" 38" 39" 40" 41" 42" 43" 44" 45" 46" 47" 48" 49" 50" 51" 52" 53" 54" 55" 56" 57" 58" 59" 60" 61" 62" 63" 64" 65" 66" 67" 68" 69" 70" 71" 72" 73" 74" 75" 76" 77" 78" 79" 80" 81" 82" 83" 84" 85" 86" 87" 88" |
152 mm 178 mm 203 mm 229 mm 254 mm 279 mm 305 mm 330 mm 356 mm 381 mm 406 mm 432 mm 457 mm 483 mm 508 mm 533 mm 559 mm 584 mm 610 mm 635 mm 660 mm 686 mm 711 mm 737 mm 762 mm 787 mm 813 mm 838 mm 864 mm 889 mm 914 mm 940 mm 965 mm 991 mm 1016 mm 1041 mm 1067 mm 1075 mm 1118 mm 1143 mm 1168 mm 1194 mm 1219 mm 1245 mm 1270 mm 1295 mm 1321 mm 1346 mm 1372 mm 1397 mm 1422 mm 1448 mm 1473 mm 1499 mm 1524 mm 1549 mm 1575 mm 1600 mm 1626 mm 1651 mm 1676 mm 1702 mm 1727 mm 1753 mm 1778 mm 1803 mm 1829 mm 1854 mm 1880 mm 1905 mm 1930 mm 1956 mm 1981 mm 2007 mm 2032 mm 2057 mm 2083 mm 2108 mm 2134 mm 2159 mm 2184 mm 2210 mm 2235 mm |
140 - 165 mm 165 - 191 mm 191 - 216 mm 216 - 241 mm 241 - 267 mm 267 - 292 mm 292 - 318 mm 318 - 343 mm 343 - 368 mm 368 - 394 mm 394 - 419 mm 419 - 445 mm 445 - 470 mm 470 - 495 mm 495 - 521 mm 521 - 546 mm 546 - 572 mm 572 - 597 mm 597 - 622 mm 622 - 648 mm 648 - 673 mm 673 - 699 mm 699 - 724 mm 724 - 749 mm 749 - 775 mm 775 - 800 mm 800 - 826 mm 826 - 851 mm 851 - 876 mm 876 - 902 mm 902 - 927 mm 927 - 953 mm 953 - 978 mm 978 - 1003 mm 1003 - 1029 mm 1029 - 1054 mm 1054 - 1080 mm 1080 - 1105 mm 1105 - 1130 mm 1130 - 1156 mm 1156 - 1181 mm 1181 - 1207 mm 1207 - 1232 mm 1232 - 1257 mm 1257 - 1283 mm 1283 - 1308 mm 1308 - 1334 mm 1334 - 1359 mm 1359 - 1384 mm 1384 - 1410 mm 1410 - 1435 mm 1435 - 1461 mm 1461 - 1486 mm 1486 - 1511 mm 1511 - 1537 mm 1537 - 1562 mm 1562 - 1588 mm 1588 - 1613 mm 1613 - 1638 mm 1638 - 1664 mm 1664 - 1689 mm 1689 - 1715 mm 1715 - 1740 mm 1740 - 1765 mm 1765 - 1791 mm 1791 - 1816 mm 1816 - 1842 mm 1842 - 1867 mm 1867 - 1892 mm 1892 - 1918 mm 1918 - 1943 mm 1943 - 1969 mm 1969 - 1994 mm 1994 - 2019 mm 2019 - 2045 mm 2045 - 2070 mm 2070 - 2096 mm 2096 - 2121 mm 2121 - 2146 mm 2146 - 2172 mm 2172 - 2197 mm 2197 - 2223 mm 2223 - 2248 mm |
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| APGV001 | PurgeGate® valve c/w fittings to prevent over inflation. | ||||
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Argweld® Inflatable Single Weld Purge Dams User Instructions Technical Manual
Argweld® Inflatable Single Weld Purge Dams User List Customer Reference
Argweld® Inflatable Single Weld Purge Dams Training Notes
Argweld® Inflatable Single Weld Purge Dams Price List
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