佳木斯EBZ160掘进机PSV551/300-3四联多路换向阀，规格型号：PSV551/300-3-41H80/80/H-41H80/80/H-41H80/80/H-41H80/80/H-E1佳木斯EBZ160掘进机PSV552/230-3七联多路换向阀，规格型号：PSV552/230-3-42H80/80/A2-42H80/80/A2-32H63/63/A2-32H63/63/A2-32H63/63/A2-32H63/63/A2-32H63/63/A2-E1)