How to translate “stem or shaft blow out resistant”?
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The following devices will be considered at the pump discharge: The following devices are to be taken into account at the pump outlet: – Pressure lower than or equal to 40 barg (600 psig): one check valve. For P≤40 barg, one check valve is sufficient. – Pressure higher than 40 barg (600 psig) but lower than 80 barg (1200 psig): two check valves of different types (those resistant to stem or shaft failure, preferably of the non-slamming type). What does “stem or shaft blow out resistant” mean in the parentheses of the last sentence? Thank you! !
It might be blowout-resistant, similar to blowout-proof.
Is there such a thing as a one-way valve?
What does “blowout-proof” mean?
It means preventing blowout and cracking, so that the valve stem will not suddenly pop out.
It is required that the shaft have a function to prevent blowing out/loss, so as to avoid the valve stem and valve disc being blown out due to high pressure, which could lead to leaks of flammable chemicals; generally, check valves and butterfly valves are designed with this feature