ARO Pulsation Dampeners
New ARO Pulsation Dampeners Extend the Shock Blocker Range
ARO expands its Shock Blocker™ range with five new pulsation dampeners (passive and adjustable). Each one protects piping, instruments and pumps from pump-driven pressure surges. The range is sized and tested for the ARO® EVO210 electric diaphragm pump — and completes the ARO solution from the pump to the pipe.
These are the first ARO passive dampeners built for electric pumps with no on-site compressed air. They join the existing Shock Blocker active range. Customers now get one brand for passive, adjustable and active pulsation control.
In Short
What is new: Five new, passive and adjustable pulsation dampeners in GF-Polypropylene, PVC, PVDF and 316L stainless steel.
Main benefit: Up to 90% pulsation reduction — longer equipment life, cleaner instrument signals and quieter systems.
Primary application: ARO EVO210 and AODD pumps in chemical processing, water treatment, food & beverage and pharma.
Meeting the Pulsation Challenge in Electric Diaphragm Pump Systems
Every diaphragm pump pulses by design. Electric pumps like the EVO210 create even sharper pressure surges than air-driven models. Left uncontrolled, that pulsation hammers piping, drifts instruments and shortens equipment life.
Until now, ARO customers running electric pumps had no on-site air to power an active dampener. They needed a passive solution — pre-charged, sealed and sized to the pump. The new Shock Blocker passive range answers that need directly.
What the New Shock Blocker Passive Range Adds to the Portfolio
The range covers five part numbers across four housing materials. Each is matched to a chemistry and a primary application. All five suit the 80-cubic-inch EVO210 envelope and ship ready to install.
- Housing materials: GF-Polypropylene, PVC, PVDF and 316L stainless steel.
- Diaphragms: EPDM and PTFE, matched to the fluid chemistry.
- Maximum pressure: up to 150 psi (10.3 bar).
- Pulsation reduction: 60–90% across the EVO210 operating range.
- Types: four passive units plus one field-adjustable model.
Operational Benefits for Maintenance and Process Engineers
A properly sized dampener removes up to 90% of pulsation before it reaches the system. Pipes stop rattling. Fittings stay tight. Flow meters and pressure transmitters hold their signal.
The passive design needs no compressed air to run. It is pre-charged once at installation. A 6-to-12-month check keeps it working, and service kits extend its life for years — turning emergency repairs into planned maintenance.
Typical Applications for the New Pulsation Dampener Range
The dampeners suit any system where a diaphragm pump moves fluid through sensitive piping, including:
Chemical processing and dosing systems
Find the right pump for chemical industry with ARO. Improve safety, cut leaks, and handle corrosive or hygienic fluids with reliable chemical transfer pumps.
Water and wastewater treatment
Food, beverage and dairy CIP loops
Pharmaceutical and biotech utility lines
Light manufacturing and general fluid transfer
In each setting, the dampeners pair with ARO EVO210 electric pumps, AODD diaphragm pumps and FRL units. One brand stands behind the whole installation.
Frequently Asked Questions (FAQ)
The passive Shock Blocker range removes 60–90% of pump pulsation across the EVO210 operating envelope. Reduction reaches 80–90% at the pressures and speeds where the EVO210 runs most often.
Related Products
Complete the fluid-handling solution with related ARO products.
Shock Blocker™ Pulsation Dampeners
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