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Cognito Pulsation Dampeners

Cognito Pulsation Dampeners

Cognito Pulsation Dampeners are bladder-type accumulators installed on the discharge of EODD or AODD pumps to absorb pulsation, deliver smooth flow and maintain consistent system pressure. Available in port sizes matched to pump output: 1", 1-1/2", 2" and 3".

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A nitrogen-pre-charged elastomer bladder inside the dampener body absorbs the pulsation peaks from the diaphragm pump strokes and releases the stored fluid during the suction stroke, levelling the discharge flow. This eliminates pipe vibration, reduces water-hammer in connected piping and extends the life of downstream filters, instruments and meters. Body materials match the pump body (aluminium, stainless steel, polypropylene, PVDF) and bladder elastomer matches the diaphragm material for full chemical compatibility.

Product Datasheet

Download Cognito Pulsation Dampeners Brochure

Detailed technical specifications, performance curves & selection guide

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Threaded /
Size
125
PSI
Pressure
Bladder-Type
Type
1
" / 1-1/2" / 2
Port Sizes

Performance Range & Specifications

Type
Bladder-Type Pulsation Dampener (Nitrogen Pre-Charged)
Port Sizes
1" / 1-1/2" / 2" / 3" (matched to pump output)
Body MOC
Aluminium / Stainless Steel / Polypropylene / PVDF
Bladder MOC
Hytrel / Buna-N / EPDM / Viton / PTFE
Working Pressure
Up to 125 PSI (8.6 bar)
Pre-Charge Pressure
30-50% of System Operating Pressure
Pulsation Reduction
Up to 95% peak-to-peak smoothing
Mounting
In-Line Vertical / Horizontal
Connection
Threaded / Flanged (matched to pump)
Pre-Charge Valve
Schrader Valve for Field Adjustment

Key Features & Advantages

Smooth Flow DeliveryUp to 95% pulsation reduction
Consistent System PressureSteady downstream pressure
Bladder-Type ConstructionEasy maintenance, isolated from process
Wide MOC RangeMatch to pump body for chemical compatibility
Multiple Bladder OptionsHytrel, EPDM, Viton, PTFE
Field-Adjustable Pre-ChargeSchrader valve for nitrogen adjustment
Reduces Pipe VibrationLess stress on piping & supports
Extends Equipment LifeFilters, meters, instruments protected

Applications

EODD pump discharge smoothing
AODD pump discharge smoothing
Filtration system protection
Flow-meter accuracy
Spray system stabilization
Coating & dispensing systems
Chemical dosing lines
Long-pipeline pulsation control

Why Choose Target Marketing for Cognito Pulsation Dampeners?

Authorized DealerOfficial Cognito (IDEX / Warren Rupp) channel partner with genuine product warranty
Application EngineeringPump & dampener selection matched to your fluid analysis
Genuine SparesCognito OEM diaphragms, valve balls, seats and motor parts
End-to-End SupportEnquiry through commissioning and predictive maintenance
Quick DeliveryReady stock for popular models, fast turnaround

Need a Quote for Cognito Pulsation Dampeners?

Talk to our application engineers for hydraulic selection, MOC review and TCO comparison.

Request Quote +91 9624042143

Frequently Asked Questions

Why do I need a pulsation dampener?

Diaphragm pumps (EODD and AODD) deliver flow in pulses corresponding to each diaphragm stroke. Without a dampener, this causes pipe vibration, water-hammer, inaccurate flow-meter readings, premature filter wear and stress on instruments and joints. A pulsation dampener absorbs the peaks and releases stored fluid during the troughs, delivering smooth steady flow.

Dampener port size should match the pump discharge port size: 1" pump → 1" dampener, 2" pump → 2" dampener, etc. The bladder volume is sized based on the displacement per stroke and the desired smoothing performance. Generally a dampener volume of 5-10x the pump displacement-per-stroke gives 95% smoothing.

A general rule is to pre-charge the bladder to 30-50% of the system operating pressure with dry nitrogen. For example, on a system running at 80 PSI, pre-charge the bladder to 25-40 PSI. Lower pre-charge gives better smoothing on low-pressure systems; higher pre-charge gives better smoothing on high-pressure systems. The Schrader valve allows field adjustment.

The body MOC should match the pump body for system compatibility (aluminium pump → aluminium dampener, PP pump → PP dampener). The bladder elastomer should match the pump diaphragm material to handle the same chemicals (PTFE for universal compatibility, Hytrel for general service, EPDM/Viton for specific chemical service).
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