Cracking Pressure and Resealing Pressure
Cracking pressure: The pressure at which the first indication of flow occurs. The repeatability of
the cracking pressure of each valve after initial relief is within ±5% at room
temperature.
Resealing pressure: The pressure at which there is no indication of flow. Resealing pressure is
always lower than the set pressure.
Back pressure: The pressure of the outlet of the valve. It increases the set pressure.