| 摘要 |
A double oil pressure cut off apparatus of a valve for a hydraulic cylinder is provided to prevent accidents due to damage to a hydraulic hose or lowering of oil pressure and erroneous operation of the hydraulic cylinder by using the hydraulic cylinder. A double oil pressure cut off apparatus(D) of a valve for a hydraulic cylinder includes a body(1) and a main hydraulic path(2). The main hydraulic path is formed in the body. First to fourth in/out units(3,3a,4,4a) are formed at upper and lower sides of the main hydraulic path. Paths(5,5a,5b,5c) are formed between the first and fourth in/out units and the main hydraulic path. A valve body(6) is movably installed in the main hydraulic path. A spring(8) and a cap(9) are coupled with a rear of the valve body. First and second valve bodies(6a,6b) are formed on both sides of the valve body. A groove(7) is formed between the first and second valve bodies.
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