Yamada AD-50ST Stainless Steel Pulsation Damper

Description:

The Yamada AD-50ST is a stainless steel pulsation damper used in industrial fluid handling systems to reduce pressure fluctuations and stabilize flow in air-operated double diaphragm (AODD) pump applications. It is commonly installed inline on the discharge side of diaphragm pumps where pulsation, vibration, and pressure spikes must be controlled. Maintenance teams, OEMs, and integrators purchase this unit to protect piping and instrumentation, improve flow consistency, and extend system lifespan.

Applications:

The Yamada AD-50ST pulsation damper is used in industrial environments where AODD pumps generate pulsating flow that can damage equipment or reduce process accuracy. It is commonly deployed in chemical processing, wastewater treatment, coating systems, metering/dosing operations, and bulk fluid transfer where it smooths flow, reduces vibration, and prevents water hammer in piping systems.

Technical Specifications:

• Manufacturer: Yamada Corporation
• Model: AD-50ST
• Product Type: Pulsation damper
• Maximum Pressure: ~100 PSI (0.7 MPa class)
• Function: Reduces pulsation and stabilizes discharge flow
• Application: AODD diaphragm pump systems (NDP-50 / NDP-80 class)
• Body Material: Stainless steel (316 typical)
• Diaphragm Material: PTFE / elastomer options available
• Connection Size: ~2" NPT or sanitary clamp (variant dependent)
• Air Supply: Uses compressed air chamber for dampening
• Design: Flow-through design maintains solids suspension
• Installation: Inline, near pump discharge for maximum effectiveness
• Operation: Self-relieving air motor adjusts to pressure changes
• Duty Cycle: Continuous industrial operation
• Status: Active industrial accessory

Common Replacements:

• Yamada AD-50ST-FDA
• Yamada AD-40 series dampers
• Wilden / Graco pulsation dampers