The Pipeline Shock Prevention People
Pump Start-up surge, Valve closure shock, Pump shutdown back flow bang.
Large vessels for high pressures with matching bladders, diaphragms, gas bags, and bellows, for over a third of a century.

ShockGuard Ltd. offer shock alleviators. | Please phone 44(0) 161-480-9625
We have people not voicemail. | Free Phone UK 08080-567-7423
Fluid Flow Control Animations
Fluid Flow Control Animations

& systems that are imcompatible with, or too large for, gas bags and liquid bladders.


Pressure increase and the reflection / return waves from the system caused by:

The pump trying to acclerate all the liquid in the system ahead of it. Keep pipe small & shock die by scrubbing themselves out against the pipe wall.
Pump start-up surge frequency graph
Because pumps spin up mores slowly than valves may close, the size of the alleviator is smaller.

The valve closing and all the liquid in the system being stopped suddenly.
Valve closure shock frequency graph
Because valves may close fast, the pressure wave is greater, & the alleviator must be larger.

Click here on How to read a "LDi" ShockView plot (as above)

ShockGuard Floatolator schematic with a centrifugal pump

1. Reservoir 2. Centrifugal Pump 8. Block Valves

Understanding the fundamentals of ShockGuard Explanations - Understanding Frequencies / How shock and surge prevention works

For use where small air adsorbtion can be tollerated but no elastomer is compatible

floatolator internals close - up
Floatolator cross sectional color cut sheet

Air / N2
LDi - analytical and modeling services and software Visit LIQUID DYNAMICS Intl. Ltd. LDi offers analytical and modeling services. They predict these and similar problems, before pipe systems are built. ShockGuard is a licensed run time user of the LDi Ltd. software, ShockView. ShockView enables us to quickly and accurately run your proposed piping system, in our computers and you what the maximum level of pump start up surge, or shutdown shock will be. Centrifugal pump, start-up surge, shut-down shock


Shock Alleviators
Water Hammer and Pipeline Surge / Shock Alleviators
STOP Pump start up surge, Valve closure shock, and Shut down back flow water hammer.
call toll free 1-888-326-7377, UK Europe -- 44(0)161-480-9625
or Contact ShockGuard Shock Alleviators.

Understanding Pipeline Surge / Shock Alleviators
Shock alleviators and shock accumulators do not alleviate shock, nor do surge alleviators and surge accumulators alleviate surge. SurgeGuard, JumboFlex, and Floatolator all work in the same way. They provide a soft place, so that the pump does not have to instantly accelerate all the liquid in the pipe system when it starts. Similarly, they provide a place into which flow can continue, for a time, against increasing resistance, when a a valve has been slammed. In both cases, because time has been increased, peak pressure generation is decreased. In short, they all prevent the peak pressure from being generated. / Shock Alleviators

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