Description
The A.J. Antunes 8621204007 is a genuine Antunes OEM differential pressure switch engineered for accurate monitoring and control of low‑range air or gas pressure differences in HVAC systems, burner controls, combustion safety panels, and other industrial or mechanical equipment. With a sensing range of approximately 0.017″ to 6″ water column (WC), this precision switch detects small pressure changes and actuates connected control circuits to maintain safe and efficient operation.
Key Features
- Pressure Range: Approximately 0.017″–6.0″ WC — ideal for low differential pressure detection.
- Reliable Switching: Sensitive and accurate operation for air or gas control logic.
- Durable Design: Rugged construction for ongoing commercial and industrial use.
- Versatile Application: Suited for HVAC, burner safety controls, draft monitoring, and pressure interlocks.







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