Enhanced oil filling valve capable of being sealed, placed, taken and injected

The utility model discloses an enhanced sealing, placing, taking and injecting oil valve which comprises a sealing nut, an oil sampler, a sliding oil pipe, a main body valve seat, a sealing flat gasket, a sealing ball, a limiting sleeve, a pressure spring and a cock fixing seat. Compared with the prior art, the novel valve body has the advantages that 1, the novel valve body is made of 00Cr17Ni12Mo2 and 06Cr19Ni10, so that the novel valve body can resist outdoor severe environment erosion and eliminate oxidation, and is particularly suitable for plateau and offshore operation; and 2, the four functions of oil injection, oil drainage, oil sample extraction and sealing are integrated, four actions can be completed through one-time installation without disassembly, and four effects are met. Time and labor are saved for clients, and operation efficiency is improved. And 3, quadruple protection sealing is adopted, and each weight can be independently sealed, so that oil is prevented from leaking, and safe operatio