Indian Oil Corporation [IOC] — Regulator exchange

Sir/madam,
Few days ago I found that my lpg regulator is leaking so I contacted my local distributor to replace it. He charged Rs. 90 and given me a refurbished regulator. Though he checked it and said it doesn't have leakage so I accepted it. My concern is about safety and assurance. Kindly assure me that it is safe and insured.
Customer no. [protected]