| 摘要 |
<p>The invention relates to a check valve meant for fitting gas compressor valves. According to the invention, the check valve is made of a unique material having some surfaces (a and c) for resting on the valve, as well as an internal surface (b) shifted as agains the resting surface (a) with 5...90% of the height of an external circular guiding column (f) provided with a central hole (e) for positioning a compression spring, non represented, being also confined by some cylinder-shaped surfaces (g and h), and at the base by a flat surface (d) having a cylinder-shaped wall (1).</p> |
