Archives :: Processing & Handling :: Liquid, Gas and Air Handling :: Valves

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August 15, 2008
Flowserve Corp. (Dallas, Tex.; has introduced the Valtek Valdisk high-cycle seat, claimed to be a "breakthrough" seat design for Valtek butterfly valves. The new...
April 15, 2008
GEMÜ GmbH & Co. KG (Ingelfingen-Criesbach, Germany; has developed a new EPDM diaphragm for use at high temperatures and steam for the biotechnological and...
March 15, 2008
Flowserve Corp. (Dallas, Tex.; has introduced a new noise-attenuating valve-trim for gaseous applications, one that simultaneously lowers the device’s manufacturing costs while improving its noise reduction capabilities. Like prior noise-attenuation trim, Flowserve’s Valtek Stealth is designed to reduce the velocity at the vena contracta (the point in a fluid stream...
February 15, 2008
The failure of a device or of a group of components can lead to overpressurization and subsequent adverse events, such as fire, explosion, spill or release. The most common causes of overpressurization are listed below. Understanding the circumstances surrounding overpressurization will help an engineer to avoid these failures. External Fire According to API RP 520 and 521 standards, a fire-exposed area is...
December 15, 2007
Demanding application requirements coupled with improved downstream control devices and enhanced instrument diagnostics have led to major changes in process-valve monitoring and control. Factors driving these changes in the chemical process industries (CPI) include the need for lower plant operating costs, reduced maintenance requirements, greater efficiency and reliability in onstream performance, and...
November 6, 2007
Honeywell Process Solutions ( has announced a $9.1-million agreement to provide control valves for the new integrated Pearl Gas-to-Liquids (GTL) plant in Qatar, a partnership between Qatar Shell GTL Ltd. (Shell) and Qatar...$9-1-million-control-valve-contract-for-Qatar-GTL-plant_3462.html
October 31, 2007
This week, Plast-O-Matic Valves, Inc. (Chem Show, New York; Booth 1018) debuts an all-thermoplastic, air-operated pinch valve with a newly designed sleeve element. With an open tubular-sleeve element to control flow, the Series HSA pinch valves provide an open flow path to eliminate dead spots...
August 1, 2007
    This ball valve provides a high flow   Introduced last year, the 7G Series (photo) is a three-piece, 316-stainless-steel ball valve offered in two- and three-way configurations. The valve operates at pressures up to 3,000 psi, has a high flow (Cv up to 2.45) and an orifice size maximum of 0.32 in. The 7G is designed for pressure-assisted sealing, eliminating the need for sealing...
June 1, 2007
Last month, Metso Automation (Helsinki, Finland; launched the Neles RotaryGlobe control valve, which is said to combine the best features of linear- and rotary-valve technologies into a new design. The body of...
July 1, 2006
PuriTech (Dessel, Belgium; has developed a continuous ion-exchange system, called Ionex, which uses up to 75% less water and requires about half the volume of ion-exchange resin, compared with traditional fixed-bed systems, says PuriTech projects director Filip Rochette. Ionex also achieves a higher separation efficiency and product concentration compared to alternative systems...
February 1, 2006
Color indicators show when valves are open or closed Mininert (photo, bottom left) valves for laboratory glassware and syringes offer push button operation with color coding — green to open and red to close. Valve bodies are PTFE with a stainless-steel stem. When used in laboratory glassware, these valves provide leak-tight closure with syringe access to screw-cap and crimp-top vials, test tubes...
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