Pre-fill Valves

Our offered Pre-Fill Valves are a drain valve which drains oil between cylinder and tank. The prefill valve prevents the oil flowing from hydraulic cylinder to tank while pressurizing, inversely, the hydraulic cylinder will make oil draining to tank when reversion. PF series pre-fill valves are compact construction which are available for large flow with no leaking.

To drain oil between cylinder and Tank is a function of Pre-fill Valves.
During operation in a large pressure mechanism, it needs to suck oil from tank to hydraulic cylinder. While pressurizing, it prevents the oil flowing from hydraulic cylinder to Tank. When reversion, hydraulic cylinder will make oil draining to tank. We offer these Pre-Fill Valves at most affordable prices to our precious customers.