ShockGuard
ShockGuard
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 USA 910-270-2737
We have people not voicemail. | Call toll free 1-888-DAMPERS

 Fluid Flow Control Animations by Liquid Dynamics


START-UP SURGE ALLEVIATION or WATER HAMMER PREVENTION FROM VALVE SLAM
AN EXPLANATION
& systems that are imcompatible with, or too large for, gas bags and liquid bladders.
The FLOATOLATOR


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

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

Surge Alleviators
floatolator internals close - up
Floatolator cross sectional color cut sheet
Liquid
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

 

ShockGuard Shock / Surge Alleviators and Accumulators
Water Hammer and Pipeline Shock / Surge Prevention Equipment
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 Us Online.

Understanding How it Works
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.

www.Shock-Guard.com / www.ShockGuard.co.uk

Other Important Sites to Help You