Attach identity Proof & Proof of Address. ( Attach photocopies of Aadhaar Card and bank statement if not already submitted for Subsidy).
Original SV ( Document isued at the time of release of your new connection with single cylinder).
Blue Book.
4 Photographs.
Carry all these documents to our office. A new SV will be issued at the time of Issue of second cylinder and your old SV will be submitted with us.