Patent ID: 7642455

Claim:
A Transformer Conservator Isolation Valve (TCIV) comprising: an inlet conduit or pipe ( 2 ), and outlet conduit or pipe ( 5 ) connected to a rectangular housing ( 7 ) with an operating device ( 10 ) fixed on a shaft ( 19 ) placed inside the rectangular housing ( 7 ) and lever ( 9 ) for locking of the operating device ( 10 ); said operating device ( 10 ) provided with a sealing gasket ( 20 ) fitted such that in response to abnormal flow of oil due to rupture of electrical transformer tank or bursting of electrical transformer bushing or draining of oil from the electrical transformer tank, said operating device swings clockwise towards the outlet conduit or pipe ( 5 ) so as to restrict flow of oil from an electrical transformer conservator ( 1 ) to the electrical transformer tank ( 4 ); a handle ( 8 ) provided with the operating device ( 10 ) outside the rectangular housing ( 7 ) which turns in anti-clockwise direction during filtration or filling of oil so that operating device ( 10 ) does not restrict flow of oil from the electrical transformer conservator ( 1 ) during filtration or filling of oil; and two locking plates ( 13 and 14 ) provided outside the rectangular housing for padlocking during normal oil flow and during filtration or filling of oil.