比例方向閥，先導(dǎo)式
型號(hào)4WRH， 4WRZ， 4WRZE
比例方向閥，先導(dǎo)式，無電位置反饋
規(guī)格10至52
安裝面按ISO 4401
控制流量的方向和大小
通過3通減壓閥進(jìn)行先導(dǎo)控制
彈簧對(duì)中和主閥芯的反轉(zhuǎn)動(dòng)特點(diǎn)
不同閥芯可遮蓋An outlander was invited to attend a local wedding of in Yunnan province. After chatting with the locals for a long time， he was avid for a sumptuous meal. So when the dinner was ready， the famished outlander was completely enticed by a bowl of large fried meat which was golden and greasy. He quickly picked a piece to eat but soon found it too large to eat up. Indeed， it was as thick as a beer mug and as long as a pair of chopsticks.In order not to be laughed at by the locals and not to be regarded as a prodigal， he made all his effort trying to finish it. However， the idea was soon