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Excessive packing friction adversely impacts pump and valve performance and energy consumption, which translates to an increase in operating and equipment cost. Excessive packing friction may also increase equipment downtime due to packing failure and/or sudden equipment failure.
Mechanical seals are designed to produce an acceptably low level of leakage to function effectively. Many individual internal and external factors, as well as interactions between them, affect the rate of seal leakage.
Blow outs can be avoided with proper gasket selection and installation procedures. Consultation with the gasket manufacturer before installation will help ensure that adequate stress will be maintained on the gasket during all phases of operation-from start-up to shutdown-to prevent blow out failures.
The FSA is actively participating in the task groups on the fourth edition of the API-682/ISO 21049 and 3A Sanitary Standards for mechanical seals .We also provided input on sealing systems to the ASME EA-2-2009 Energy Assessment for Pumping Systems standard. The API & 3A standards provide the latest technology updates for formidable industry applications, while the ASME Standard addresses the critical issues of energy efficiency and sustainability.
The application of expansion joints to thermoplastic and FRP piping systems requires special attention to design features to ensure optimum long term reliability and safety.
This discussion opens a three-part series covering mechanical seal piping plans that provide guidelines for various seal arrangements, fluids and control equipment to help you determine what support system requirements will maximize the performance reliability of your application.
The first step in selecting environmentally responsible sealing solutions is to define the term, environmentally responsible. This is not as straightforward as it sounds, since it can be defined in regulatory terms, by corporate policy, or by moral and ethical standards. The term can also be extended to include resource conservation, as well as emissions reduction.
Power plant slashes maintenance time and labor costs dramatically by switching to split design mechanical shaft seal.
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The focus has been on the main source of the emissions—valve stem packing. Several companies have evaluated current industry standards and have crafted testing protocols specific to their application requirements.
How does FSA’s role in standards development affect the pump and seal industries?
Dry fasteners provide secure attachment without personnel safety and
environmental issues.
Why are mechanical seals still the preferred choice in the process industries?
Many factors must be considered when making this important decision. Third of Six Parts
Proper seal choice is critical for optimal compressor operation.
What should be considered for the selection of expansion joints for pumps?
Power plant slashes maintenance time and labor costs dramatically by switching to split design mechanical shaft seal.
Why don’t my PTFE gaskets seal FRP, plastic and other light load flanges?
Find a reliable dry gas seal system for any application.
First of Six Parts
Industry News
Columns and Blogs
The performance of a centrifugal pump with a trimmed impeller will follow the affinity laws as long as that trim is relatively small.
Standards for repair will begin with a standard for vertical turbine pumps.The pump industry is undergoing renewed interest in the technical aspects and quality of repairs.
Charlie Jackson was unaware of any centrifugal pump manufacturer that knew how to calculate hydraulic axial thrust produced within liquid ends of their pumps.
