GAS BAGS Under pressure single and twin Bagging Off systems for P.E. and ferrous gas pipelines RESISTRA, SUPRA, ULTRA, INSPECTRA Sarco 'Resistra' Self-Centring Gas Bags Maximum main pressure 350Mbar specification. The stopper bag conforms fully to the British Gas specification BGE/E4 for inflatable self-centring bags for use on distribution mains. 'Inspectra' Twin Bag Multi Service Spine Incorporated twin self-centring BGE/E4 gas bags with multi service core spines (up to 9 separate services can be accommodated) Bagging-off Polyethylene Mains Bagging-off P.E. mains can be more efficient method of flow stopping than the alternative "squeeze off" technique, particularly where larger diameters demand double units each side of the working area. Sarco 'Ultra' Twin Bag Single Entry Gas Bags Standard nominal pipe sizes 75mm - 300mm Maximum main pressure 350Mbar. Using twin BGE/E4 type bags but incorporating a 4 service core spine. A single entry bagging-off system is provided and reduces costs of more traditional bagging-off techniques. Sarco 'Supra' Self-Centring Gas Bags Standard nominal pipe sizes 75mm - 300mm Maximum main pressure 2 bar specification. Self-centring, spined with special pressure joints the bags meet the E19 and E20 technical requirements for higher pressure applications.

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