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Water Hammer

Water hammer is a shock wave transmitted through fluid contained in a piping system. The most basic explanation is that water hammer occurs when a fluid in motion is suddenly forced to stop moving. The momentum of the fluid abruptly stopping creates a pressure wave that travels through the media within the pipe system, subjecting everything in that closed system to significant forces.


A Primer on Fugitive Emissions

Fourscore and seven years ago, no one had ever heard the term “fugitive emissions.” Today, many people wish they’d never heard the expression. Most of us, however, fall somewhere between “never heard of” and confusion.

Triple Offset Butterfly Valves

Since their introduction to the market more than 50 years ago, triple offset valves (TOVs), which are also known as triple eccentric valves, have continued to evolve, while uses for this type of valve have expanded across multiple industries. Originally designed for water shut-off applications, design enhancements through the years placed this versatile valve among other industry staples for performance in the harshest conditions of critical process environments. At the same time, these valves have always had certain parameters within which they can operate effectively.

Stop Check Valves

Stop check valves are vital to several industries to protect boilers and other equipment.

Introduction to Pressure Relief Devices - Part 1

When the pressure inside equipment such as boilers or pressure vessels increases beyond a specified value, the excess pressure may result in a catastrophic failure. To avoid that calamity, pressure relief devices are used at predetermined set pressures to protect the equipment by relieving the excess pressure (Figure 1).

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