The biopharmaceutical industry relies on hygienic diaphragm valves for its demanding process applications because of the unique needs for cleaning and draining, and for pressure and temperature capabilities.
For decades, valve manufacturers have provided the maximum recommended working pressures and temperatures for their products, based on the materials used in the pressure-containing parts.
The Manufacturers Standardization Society (MSS) of the Valve and Fittings Industry is excited to announce publication of the new Standard Practice SP-158-2021, Supplemental High-Pressure Gas Test Procedures for Valves.
Q: I need to qualify a welding procedure specification per the ASME Boiler and Pressure Vessel Code.
In the last year, one word has dominated U.S. trade policy: tariffs.
The purpose of a process plant control system is to keep process variables at the desired operating point and within safety limits.
Ask David Hughes, the new chairman of the Valve Manufacturers Association of America (VMA), what he sees as the most significant pressure the valve industry of today faces and he’ll point to the need to find new ways to offer and create expertise.
Every water supply district experiences unnecessary losses from leakage and expenses for repairing line breaks.
The designers of modern thermal power plants continue to work hard to improve plant efficiency by increasing the heat rate as a function of main-steam pressure and temperature.
Accurately specified and appropriately maintained pressure relief valves (PRVs) are critical to protect plant personnel and equipment against unexpected overpressure events.
From time to time, we re-publish well-received or particularly valuable articles that have previously run on VALVEMagazine.com so that those who might have missed them will be able to catch up on the best of the best.
Process instrumentation is an integral part of any process industry because it allows real time measurement and control of process variables such as levels, flow, pressure, temperature, pH and humidity.
For a very long time, the idea has existed that a trunnion-mounted ball valve can be opened under full differential pressure if the piping system can withstand the rapid increase in pressure and the forces induced by it.
Steam condensate is the liquid by-product formed when steam goes from the vapor state to the liquid state; this process occurs in a wide range of applications, across virtually all industries.
A control valve can be used to control pressure, pressure drop, flow and temperature in any system where there is a fluid flowing through a pipe that needs to be controlled.
Natural Soda operates seven production well pairs in Colorado to produce saturated nahcolite brine for manufacturing sodium bicarbonate (baking soda). Mining nahcolite requires very careful monitoring of temperature, pressure and flow to not only optimize production performance—but also to mine the product sustainably and protect the freshwater aquifer.
With growing pressure to combat fugitive emissions and meet strict industry regulations, understanding the latest sealing technologies and design considerations for component solutions in severe applications is becoming increasingly critical.
As drilling operations explore ever greater depths and pressures, operating pressures for new valve assemblies are going beyond traditional limits.
Water hammer, high-velocity fluid flow and contaminated hydraulic media are among the worst enemies of high-pressure hydraulic systems.
Typically, isolation valves are used to block off a pressure safety valve (PSV) from system pressure, so that maintenance on the valve or related equipment can be conducted without a shut down.
A new test organization program and stamp has been authorized by the National Board of Boiler and Pressure Vessel Inspectors (NBBI), effective February 2016.
In any industry, one of the most challenging tasks is keeping up to date and compliant with complicated and ever-changing sets of performance standards.
These days, piping designers use automated systems that default to standard classifications such as pressure classes of 150 to 2500 for valves and associated equipment.
Normally, valves are pressure tested by the factory to check for leaks before they’re shipped.
By closely controlling the pressure and temperature of both heating and cooling mediums within heat exchange systems, the use of an automated control valve can help assure the efficient transfer of heat.
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.
In Part 1 of Pressure Relief Devices, which appears in VALVE Magazine’s Winter 2016 issue, the author stresses the vital role pressure relief devices play in keeping end-user industries that deal with pressurized equipment safe.
In deciding not to start raising short-term interest rates, the Federal Open Market Committee (FOMC) said, “Recent global economic and financial developments may restrain economic activity somewhat and are likely to put further downward pressure on inflation in the near term.” As such, the Federal Reserve has chosen to see how the next few months transpire before opting to begin the process of normalizing rates, likely at the December 15–16 meeting, depending on the strength of incoming data between now and then.