08222017Tue
Last updateTue, 22 Aug 2017 6pm

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Advances in Mechanical Seals

Manufacturers of mechanical seals today are constantly working to engineer longer-lasting, safer, easier-to-use and lower-emission seals for the benefit of seal users, the products they produce and the environment. Technology can be an enabling key to mechanical seal reliability, but it is not the only key. Without knowing the true process conditions, understanding interrelated effects of the larger system, and operating the system properly, good technology applied badly may not ultimately improve reliability.


Use of Hard Coatings for Valves

What types of coatings are available for valves in severe service abrasion service?
Valves operating in this type of service require enhanced durability and corrosion resistance. The coatings widely used for valves include HVOF, hard chrome and D-gun, all of which provide a hard surface with much better resistance to abrasion compared to uncoated parts.

How to Select a Valve Controller

Process manufacturers are faced with multiple considerations when choosing a valve controller or switchbox that will best meet their application needs. Key aspects to consider include product endurance in demanding application environments, agency certifications, ease of installation, maintenance requirements, and product support.

Water Hammer—Check It Out

Have you ever been in an area of the plant that had just shut down a pump, only to hear an explosive sound a few seconds later? The noise you heard was the pump check valve, accompanied by the water hammer, or reverse flow, that slammed it shut.

Valve Live Loading Using Belleville Springs

The "live loading" of valve packing has been the topic of many articles and papers over the past few years. While highly recommended by some, others claim it has no value. The truth is both statements can be correct-it all depends on the individual application.

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