Vacuum breakers are used to break the vacuum in steam systems, which can effectively protect the equipment from being in a vacuum state when steam condenses. Its principle is similar to that of a one-way valve. When the internal pressure of the system is lower than the atmospheric pressure, the vacuum breaker opens. If the internal pressure of the system is high, the vacuum breaker is closed. Applicable to: heat exchangers, steam storage, boilers, sandwich pots, sterilization chambers, steam main lines.
Q: What is the main purpose of a steam vacuum breaker?
A: It admits air into a steam system when a vacuum forms, preventing equipment collapse and allowing proper condensate drainage.
Q: When does a vacuum occur inside steam equipment?
A: When the steam supply is turned off, the remaining steam rapidly condenses into water, creating a sudden internal vacuum.
Q: Can a vacuum cause heat exchanger damage?
A: Yes. A vacuum holds condensate inside the exchanger, leading to water hammer, thermal shock, and potential structural cracking.
Q: Where should a vacuum breaker valve be mounted?
A: It should be installed at the highest point of the steam equipment or pipeline jacket where the vacuum forms.
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