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SENTRY™ Pulsation Dampeners
and Surge Suppressors

Remove Pulsations for Smooth Fluid Flow.
Prevent Vibration and Water Hammer.
Improve System Performance and Reliability.

SENTRY pulsation dampeners and surge suppressors remove virtually all system shock to enhance performance, reliability and safety in municipal and industrial pumping applications. Prevent water hammer, minimize pulsation, eliminate vibration and ensure a consistent and laminar fluid flow. Materials and sizes to suit a wide range of applications with pressures ratings up to 15,000 psi.

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Sentry Inlet Stabilizer Pump
Inlet Stabilizer Features

Pulsation and Surge Control

The start and stop action of positive displacement pumps rapidly accelerates and decelerates fluid in motion resulting in pulsations observed as pressure spikes. Pulsation dampeners absorb the energy of these pressure spikes by accumulating and then releasing process fluid when the pump is on its suction stroke. By keeping the fluid in motion, dampeners eliminate vibration and the pulsing, inconsistent flow caused by pulsation.

Water hammer (or hydraulic shock) occurs when fluid in motion is suddenly started, stopped or forced to change direction. Quick closing valves, rapid pump startup/shutdown, even changes in the pipe profile, can cause an abrupt change in fluid velocity producing violent and sometimes catastrophic water hammer. Surge suppressors act as shock absorbers by accumulating and releasing process fluid as needed to slow the rate of fluid velocity change to a level low enough to prevent water hammer.

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Benefits

Protects pumps, piping, valves, fittings, and components from damaging vibrations and fatigue.

Prevents destructive pressure surges caused by rapid pump startup and shutdown.

Prevents hydraulic shock from quick closing valves or equipment shutdown.

Improves the accuracy and longevity of flow meters, pressure gauges and other inline instrumentation.

Ensures a smooth and consistent fluid flow in metering pump systems, chemical injection processes, and dosing applications.

Prevents product agitation, foaming, splashing and contamination.

Ensures uniform and continuous application in spraying and coating processes.

Improves the transfer process when pumping viscous or abrasive fluids.

Features

Models in stock for pumps with discharge sizes from 1/8" (3.18mm) to 6" (152.4mm).

Maximum pressure ratings up to 15,000 psi (1034.2 bar).

Temperature ranges from -60°F (- 51°C) to +400°F (+204°C); metal bellows -200°F (-129°C) to +800°F (+426°C).

Simple and reliable design for quick installation and easy inline maintenance.

Available in a full range of plastic and metal materials with elastomer bladders, PTFE or stainless steel bellows.

Each unit factory pressure tested to assure proper function and leak-free operation.

ATEX and CRN certification on metal models. NSF/ANSI certification on select plastic models. Additional certifications and testing on request.

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Inlet Stabilizer Features