The causes of pneumatic valve seal failure

the causes of pneumatic valve seal failure mainly has the following several aspects.

and natural failure due to remain the medium sealing, sealing components after reaching the service life of pneumatic valve seal failure.
, large pump inlet pressure fluctuations can cause damage of seal
hour pump inlet pressure, pump cavity pressure suddenly decreases, and the sealing liquid back into pump cavity, lead to seal face dry rubbing, great heat seal face in a short period of time can't take away, resulting in seal face burned, seal failure; At the pump inlet pressure is too large, as the seal chamber pressure increases, more than seal can withstand the limit, pneumatic valve seal failure.
and seal flush seal failure caused by insufficient
mainly formed in the sealing surface sealing liquid film on the sealed cavity medium have the effect of blocking, sealed rinses mainly take the action of heat sealing surface, when sealing rinses inadequate or sealing cavity there is a huge quantity of heat, resulting in seal face burned, seal failure. Pump cavity medium to flow, sealing cavity pressure suddenly decreases, sealing effect ring suddenly damage are likely to cause inadequate seal flush.

, bearing damage caused by seal failure damage caused by the location of the roller bearing are changed, the vibration of the pump, pneumatic valve seal failure.