Decompression Type (PDF)
The feature of PDF serial Prefill valve is compact and easy to assemble, capable of enlarging the flow without leaking.
Besides, dump valve is available to once swich on but without additionally assembling. The lowest pilot pressure when dumping only 12-17% of main cylinder.
The function of Pre-fill valve PF series is a drain valve between hydraulic cylinder and tank.
During operation in a large pressure mechanism, it needs to suck oil from tank to hydraulic cylinder to tank. when reversion, hydraulic cylinder will make oil draining to tank.