The quick-release valve of grill type can not only increase valve opening but also decrease distinctly the fullsize-opening height.

 
  • 增大閥孔周邊長(cháng)可減小全開(kāi)高度,條孔柵格式快開(kāi)閥既可增大閥孔的開(kāi)口率,又可使全開(kāi)高度明顯減小。
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