Multi - turn operation allows for precise throttling of manual valves 多旋转操作使得手动阀门能够进行精确节流。
The single unit cap and lifting lever permit manual valve opening ( testing ) with low required force on the lever 这种一体式阀盖和提升杆使得检测人员只需轻轻扳起测试杆即可人工手动开启阀门进行测试。
The results show that , when the compressor continuously runs , the stability of the test bed after using manual valve is better than that of using thermal valve , and it is little affected by the kinds of valves for adjusting cooling water ; and that , when the compressor intermittently runs , the operation stability would be obtained if pneumatic valve is used to adjust cooling water , especially at low speed 结果表明,压缩机连续运行时,制冷剂采用手动阀调节后工况的稳定性明显好于采用热力膨胀阀时的情况,此时调节冷却水量用的电动调节阀和气动调节阀对工况稳定性影响相差无几;间歇运行时,无论是热力膨胀阀还是手动阀,即便压缩机通电时间最长,仍达不到设定工况,特别是低速的断续尤为明显,而使用气动阀就能很好地解决这一问题。
Impeller is adopted for the type of static mixer element that makes easy to exchange an impeller when it will be hardened in a job and has a cost saving effect . the mixer driven type is optional for an air motor or an electrical motor and it is available to operate it as the manual valve type by an operator 推进器被选作静态混合器元件使得当静态混合器推进器工作时被固化后推进器很容易的被调换,从而节约成本,混合驱动类型可以任意选择空气马达或电动马达或操作者手工操作。