| 摘要 |
<p>A shutoff wedge for a shutoff valve has a U-shaped sliding shoe of synthetic plastic material with good sliding properties, high wear resistance, and sufficient temperature strength, which is inserted in guiding grooves of the shutoff wedge which is sealingly enclosed by a rubber elastic jacket up to the sliding faces abutting against guiding strips of a shutoff valve housing. A method of anchoring of the synthetic plastic sliding shoe and a mold therefor are also provided.</p> |
