The choice of pneumatic valve ice storage system

the choice of pneumatic valve problems that should be paid attention to:
(1) electric regulating pneumatic valve, pneumatic valve switch airtight performance should be strict with series freeze and melt in the process of ethylene glycol side will run in - in a certain stage 。 ℃/ - 。 ℃ temperature range, on the other side of the plate in the frozen water usually run in ℃ / ℃, if the board in the ethylene glycol side closed lax for leaks, will cause the plate in the frozen water freezes on one side, the frost crack of the equipment.
(2) the electric pneumatic valve should be set on both sides of the pneumatic valve repair, the ventilation valve; For system maintenance, and manual operation.
3. Electric pneumatic valve must have a convenient manual adjusting device.