Gas saver Benefits of SVI - India one and only energy saver company which is certified and tested by government laboratory National Small Industries Corporation Limited (NSIC) â India and ONGC Approved ITALAB PVT. LTD. â India. - Non-Corrosive material: IS - 319 grade brass body & stainless steel 304 grade body. - Easy to install so no cutting on gas line while fitting. - Increase thermal efficiency. - Maintenance free device. Observation: - The flame becomes brighter and turns from red to white orange. A high temperature bright flame is observed. - The flame is reduced in vertical length and extended laterally. The rate of combustion becomes higher. - Spark in the flame is reduced or eliminated. - Vibrating combustion is prevented. - Pollution material content in exhaust gas is reduced.