The main advantages are:
- They avoid the need to connect anddisconnect pipelines.
- Avoid oil spillage.
- Allow a quick and easy changeover betweencircuits - with the engine running and the hydraulic lines pressurised.
- Faster changeover for greater productivityand safer operation.
- Totally leak free between ports.
- Highly tolerant to dirt and contamination.
For excavators without a hammer circuit, please consult Holmbury for technical advice.