Check Valve Basics - Cracking and Resealing Pressure
Swagelok Tech Tip: Check Valve Basics - Cracking and Resealing Pressure
Cracking pressure is that pressure in which you first get an indication of flow. It's not necessarily when the valve is in the fully open position. Re-sealing pressure is that pressure in which there's no indication of flow. Re-seal typically requires back pressure in order to re-seal properly.