Emerson Flow Controls 056989 1-1/8" ODF APD-Series Pulsation Dampener (35+ Ton) Damper

The Emerson Flow Controls 056989 1-1/8" ODF APD-Series Pulsation Dampener (35+ Ton) Damper is a Emerson Flow Controls damper for HVAC repair and replacement work. Use it when the part number 056989 and the listed specifications match the equipment being serviced.

1-1/8" ODF APD-Series Pulsation Dampener (35+ Ton) The APD series is designed to reduce noise and vibration on the compressor discharge lines. Features: • Compact size • Full flow fittings • Solid copper connections • Corrosion resistant epoxy powder paint finish • Rugged steel shells for vibration resistance • Shock resistant steel shell construction Specifications: • Maximum working pressure: 680 psig • Operating Range: -40°F to +250°F • UL/CUL file number: SA 5760

Key Specs

• Product Type: Damper

Expert Verdict

Reviewed by the SuperArbor Pro Desk: choose this part when the existing component label and unit documentation match 056989 and the spec set above. It is best suited for targeted HVAC service repairs where exact fitment matters more than broad universal compatibility.

FAQs

What is the Emerson Flow Controls 056989 used for?

It is a damper for compatible Emerson Flow Controls HVAC equipment. Match the part number 056989 and the equipment service literature before ordering or installing.

Which specs should I verify before purchase?

Verify the spec set shown for this part: Product Type: Damper. The replacement should match the existing component and the unit documentation.

How do I confirm this is the right replacement?

Compare the part number 056989, the damper description, and any unit model references with the original component and the service manual.

Is this an OEM-style replacement part?

Use it as a direct replacement only when Emerson Flow Controls documentation lists 056989 or an approved equivalent for the unit being serviced.

Who should install this HVAC component?

A qualified HVAC technician should install and test the damper. Disconnect power first, follow lockout procedures, and confirm safe operation after replacement.

Safety and Installation Notes

Disconnect power before service. HVAC electrical and combustion-related components should be installed and tested by a qualified technician. After installation, confirm wiring, mounting, airflow or fluid routing as applicable, and normal system operation.