长期来对超高压液流的分配没有一种较好的分配阀,特别对小流量更缺乏办法。因为间隙密封的分配阀总不可避免地存在泄漏。由此大多设计了两只截止阀进行双作用油缸的换向。因此换向时间长,操作不便,给双作用油缸的超高压液压机具的应用带来许多不便。为适合 CH2ZB超高压泵站新产品的需要,我们研制了如下性能的三位四通转阀,经3～4年在产品上的实际使用证明性能可靠,操作方便,现介绍如下: Long-term distribution of ultra-high pressure liquid flow does not have a better distribution valve, especially for the lack of small flow method. Because of the gap seal dispensing valve inevitably there is a leak. Mostly designed two stop valves for double-acting cylinder reversing. Therefore, the commutation time is long and inconvenient to operate, which brings many inconveniences to the application of the ultra-high pressure hydraulic equipment with double-acting cylinders. In order to meet the needs of new products of CH2ZB EHV pumping station, we developed a three-position four-way rotary valve with the following properties. After 3 to 4 years, the actual use on the products proves that the performance is reliable and the operation is convenient. The introduction is as follows: