RV Series Inline Check Valve, SAE-8 Ports, 7 PSI Cracking Pressure, Up To 7250.00 PSI

This particular inline check valve is a half-inch (1/2) size.

For most standard hydraulic circuits, 7 PSI cracking pressure is on the lower end, which means the valve opens with very little upstream pressure. That works well in systems where you need fast response or low back pressure to initiate flow. The metal-to-metal seat handles the sealing side of things, so once flow stops, backflow gets blocked regardless of how low that cracking threshold is. If your system runs at higher startup pressures and you need more resistance before the valve opens, there is also a 65 PSI cracking pressure option available in the same RV Series.