Leaky valve, low pressure in propellant tank led to GSLV failure in August 2021: ISRO Nation Leaky valve, low pressure in propellant tank led to GSLV failure in August 2021: ISRO News Analysis India 2 years ago ISRO found that the GISAT-1 mission failed owing to damage in the soft seal in a critical valve which resulted in lower pressure in...Read More