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Purge Bag System, Sizes: 2 - 24" (38 - 605Mm I/D)
SKU
PB
Brand: Pipe Purge Master (PPM)
In stock
Used for 90% of the traditional pipe weld purging applications to provide bright, shiny, oxide free weld roots. The PPM Purge Bag system is quick and easy to use, providing a very rapid weld purge. High quality materials are used in the production of these systems, guaranteeing perfect oxide-free weld roots in very little time.
Due to the design of this system, the volume of gas used to purge is minimized, resulting in significant reduction of both time and inert gas consumption. Return on investment can be achieved in as little as just one or two welds. These robust systems can be used over and over again paying for themselves in very little time.
How it works?
The Purge Bag system is designed around the principle of using 2 dams, that are connected by an armoured spinal tube, to create a seal either side of the weld. These dams are just far enough away from the weld not to be affected by heat, but close enough to the joint to provide the fastest weld purge time.
Once ready to start purging, the system is inserted into the bore of the pipe using the luminous strip to centre the system to the weld gap.
When the gas flow is started, the dams inflate and upon reaching the pre-set pressure, the valve releases the gas gently into the weld chamber, to purge the interspace without turbulence. The oxygen is removed from the weld chamber by the inert gas through the integral exhaust tubes in the bags, enabling the welder to produce an even oxidation free penetration weld bead. Used in conjunction with PPM’s oxygen monitors, indicating when the required low level of oxygen has been reached, welding can then commence. Afterwards, the dams are deflated simply by disconnecting the purge gas feed and the system easily withdrawn. The design of this system requires only one gas connection for both dam inflation and weld purging.
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PPM’s Purge Bag system dramatically reduces purging times, leading to significant savings
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Typical purge times for 4" pipe = 11⁄2 mins; 8" pipe = 4 mins; 12" pipe = 8 mins
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Ready to use, connects to a dedicated and regulated gas supply. Choose
any flow rate up to 20l a min. -
Gas pressure control ensures an even positive root bead with no notching
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Quick and easy to install, simplifying the process of inert gas purging
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Heat resistant up to 70oC continuously
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Use less inert gas. The volume of purge gas used is less than 2% of a conventional purge
| PART NO | DESCRIPTION | NOMINAL PIPE SIZE | INTERNAL DIAMETER RANGE (I/D) | WEIGHT (LBS.) | (KG) | ||
| PB02 | 2" Purge Bag system | 50 mm | 2" | 1.49" - 2.37" | 38 - 60 mm | 1 lbs. | 0.34 kg |
| PB03 | 3" Purge Bag system | 75 mm | 3" | 2.17" - 3.53" | 55 - 90 mm | 1 lbs. | 0.34 kg |
| PB04 | 4" Purge Bag system | 100 mm | 4" | 3.51" - 4.51" | 89 - 115 mm | 1 lbs. | 0.34 kg |
| PB05 | 5" Purge Bag system | 125 mm | 5" | 4.14" - 5.50" | 105 - 140 mm | 1 lbs. | 0.38 kg |
| PB06 | 6" Purge Bag system | 150 mm | 6" | 5.32" - 6.68" | 135 - 170 mm | 1 lbs. | 0.38 kg |
| PB07 | 7" Purge Bag system | 175 mm | 7" | 6.30" - 7.66" | 160 - 195 mm | 2 lbs. | 0.70 kg |
| PB08 | 8" Purge Bag system | 200 mm | 8" | 7.09" - 8.45" | 180 - 215 mm | 2 lbs. | 0.90 kg |
| PB09 | 9" Purge Bag system | 225 mm | 9" | 8.08" - 9.43" | 205 - 240 mm | 2 lbs. | 0.95 kg |
| PB10 | 10" Purge Bag system | 250 mm | 10" | 9.26" - 10.61" | 235 - 270 mm | 2 lbs. | 1.00 kg |
| PB11 | 11" Purge Bag system | 275 mm | 11" | 10.03" - 11.41" | 255 - 290 mm | 2 lbs. | 1.05 kg |
| PB12 | 12" Purge Bag system | 300 mm | 12" | 11.03" - 12.39" | 280 - 315 mm | 2 lbs. | 1.10 kg |
| PB13 | 13" Purge Bag system | 325 mm | 13" | 11.41" - 12.79" | 290 - 325 mm | 2 lbs. | 1.20 kg |
| PB14 | 14" Purge Bag system | 350 mm | 14" | 12.41" - 13.76" | 315 - 350 mm | 3 lbs. | 1.30 kg |
| PB15 | 15" Purge Bag system | 375 mm | 15" | 13.38" - 14.76" | 340 - 375 mm | 3 lbs. | 1.50 kg |
| PB16 | 16" Purge Bag system | 400 mm | 16" | 14.38" - 15.73" | 365 - 400 mm | 3 lbs. | 1.70 kg |
| PB17 | 17" Purge Bag system | 425 mm | 17" | 15.35" - 16.73" | 390 - 425 mm | 4 lbs. | 1.75 kg |
| PB18 | 18" Purge Bag system | 450 mm | 18" | 16.34" - 17.70" | 415 - 450 mm | 4 lbs. | 1.80 kg |
| PB19 | 19" Purge Bag system | 475 mm | 19" | 17.32" - 18.70" | 440 - 475 mm | 4 lbs. | 1.85 kg |
| PB20 | 20" Purge Bag system | 500 mm | 20" | 18.31" - 19.67" | 465 - 500 mm | 4 lbs. | 1.90 kg |
| PB22 | 22" Purge Bag system | 550 mm | 22" | 19.69" - 21.05" | 500 - 535 mm | 5 lbs. | 2.20 kg |
| PB24 | 24" Purge Bag system | 600 mm | 24" | 22.45" - 23.80" | 570 - 605 mm | 6 lbs. | 2.50 kg |
*Larger sizes and specials available upon request with 35 mm / 1.37" expansion range
