Hi guys here is an answer which i found whilst trying to find a replacement bag also!
I have just managed to find a company that for £17.68 incl vat and postage will send me a replacement bag for my Power Devil garden vac, though my model is PDGSV2000. Company details are as follows: Pulse Home Products Ltd, Vine Mill, Middleton Road, Royton,OLDHAM, OL2 5LN. Telephone number: 0161 652 1211 0161 652 1211 . They do not do credit card sales and you will have to phone and then send a cheque. Good luck.
Hope this helps
Bri2303
September 2009