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122770 AERCO Boiler AERCO VACUUM BREAKER

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122770 AERCO Boiler AERCO VACUUM BREAKER

Normal Stock Item 

AERCO 122770 is the OEM Vacuum Breaker for AERCO boilers and water heaters, and the grounded search results give us a complete, authoritative profile of the part.

AERCO 122770 Vacuum Breaker — OEM vacuum‑protection device for AERCO boilers and water heaters. Prevents back‑siphonage and negative‑pressure damage by admitting air when system vacuum occurs. Ensures safe, code‑compliant operation and protects piping, heat exchangers, and downstream equipment. Direct‑fit replacement engineered to AERCO factory specifications.

🔧 Core Identity & Function

Part Number: 122770 Component: Vacuum Breaker OEM: AERCO

A vacuum breaker protects hydronic and steam systems from negative pressure. When the system experiences a pressure drop, the breaker opens to admit air, preventing:

  • Back‑siphonage

  • Reverse flow of water or condensate

  • Damage to piping, heat exchangers, and downstream equipment

Technical Role

  • Prevents vacuum formation

  • Protects piping and equipment from collapse or reverse flow

  • Ensures code‑compliant operation

  • Maintains stable hydronic/steam system performance

  • Direct‑fit replacement for AERCO systems (no field modification required)

Applications

Used in:

  • AERCO commercial boilers

  • AERCO commercial water heaters

  • Hydronic heating systems

  • Steam systems requiring vacuum protection

Typical replacement scenarios:

  • Evidence of back‑siphonage

  • Negative‑pressure faults

  • Drain or piping damage

  • Preventive maintenance on older systems

 

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