Valve Technology News

Communities around the world are suffering from infrastructure woes that lead to leaks and water losses. A number of strategies can help alleviate these problems. Water Efficiency.net tackles the problem at the pipe, exploring detection and pipe repair issues, while Flow Control examines the issue from the valve perspective, presenting strategies for managing pressure to limit leaks and loss at the valve. These strategies include valve material choices, valve types, and integrating pressure-reducing valves, SCADA, and other pressure-relief options.

SVF continues to set the pace with the introduction of the Series BZ9 Bronze Ball Valves, the aero2 A2D-10 Miniature Pneumatic Actuator, and our new sales tool, SVFmobile.net. Scan or click our QR Code to visit www.SVF.net and learn more about the full line of valves, actuators, and controls offered by SVF!

Deltrol Controls manufactures hose sets and fittings for potable water applications such as coffee, vending, and ice maker equipment. The hose sets are customizable with Lead-free (<0.25%) brass fittings (plating available) and tube lengths per your application requirements. Select configurations are NSF certified. Contact Deltrol Controls for more information.

The Lee Company's new sub-miniature Latching Solenoid valve is specifically designed for applications that demand ultra-low power, low heat, and small size. These features make the valve ideal for compact, battery powered pneumatic instruments such as portable oxygen delivery systems, environmental gas samplers, and other OEM flow switching devices.

Asahi/America's industrial quality thermoplastic Type 57LIS butterfly valves provides direct replacement of metallic butterfly valves without any modifications to existing piping systems.

Available in 3-8 in., lever or Plasgear™ plastic operator-style, the Type 57LIS conforms to ISO-5752 short face-to-face dimensions and can be electrically or pneumatically actuated using Asahi/America actuators.

An oil-fired power station with 1,000 mW capacity replaced hydraulic actuators because of high-operating pressures and leaks from the use of hydraulic oils. Valve User reports that 16 linear stroke and lever arm actuators were replaced on reheat and super heater dampers, and induced draft and forced draft fan discharge dampers. Actuators are operated by a power control system utilizing 4-20 mA signals for position demand and feedback.

Design News has named integrated actuators one of 2011's top five technology advancements. Actuator advances included all-in-one packages with advanced controls and improved network connectivity. Other technologies of note include network safety, Ethernet and wireless networks, smartphones, and a simulation software package that allows players to manage three manufacturing plants.

Ball valves used in process line control operations can face seal destroying solvents, says Process Industry Informer. In one gas cleaning and sweetening process, a ball valve faced high-operating pressures, glycol-based solvents, and rapid gas decompression that attacked valve seals and O-rings in the valve seat. Perfluoroelastomer seal products withstood the solvent chemistry and other challenges to improve seal life, prevent premature valve leaks, and reduce costs.

Each industry has unique valve requirements, and Design World looks at several types, including poppet designs, which have fast response rates, and a tolerance for debris. The diaphragm-poppet design valve has no sliding seals and is pressure unbalanced. The spoppet combines poppet and spool valve designs and provides the benefits of the poppet design with reduced sensitivity to lubrication. Spool-design valves are cost-effective for 4-way valves.

Taylor Valve 8200/8300 Safety Relief Valves are engineered and manufactured to the highest standards and feature a "state-of-the-art" soft seat which ensures a bubble-tight seal for hundreds of "pops". Our unique, patented radius disc design further guarantees a reliable reseat even under the most difficult conditions.

Designed for harsh process conditions such as PV, glass coating etc., VAT's Series 091 bellows-sealed gate valves feature a wedge sealing system that eliminates the guidance bearings, lubrication, and complex sealing mechanisms found on conventional HV gate valves making this valve an excellent choice for vacuum isolation in harsh process environments. Learn more.

Rogan introduces a new generation of bondable liquid silicone rubber (LSR). Utilizing LSR's heat, chemical resistance, and ability to form a molecular bondable material allows designers to develop highly reliable components that meet demanding performance and cost requirements.

Rogan Corporation has been providing customers with quality, cost, and delivery for 75 years.

Operating at up to 13,000 RPM, Cavitron rotor/stator mixers can produce as many as 500 million cavitational episodes per second. Cavitron reactor systems are based on kinematic high-frequency technology.

Australia has quickened installation of water-fluoridation plants, and as plants have gotten larger and more prevalent, the need to control fluoride dust has also increased, according to Process Online. A flow control valve cinches the bag containing fluoridate material, such as sodium silicofluoride powder, to isolate the bag in case of an emergency, keep moisture out, and allow partially empty bags to remain in place until more material is needed.

For many water utilities, golf courses are their largest water consumer, especially during warmer months when demand is at its greatest. Improving water usage is doable, however, according to a water conservation group. Water meters are one answer, and one company offers a 3-way PVC ball valve for use upstream and downstream of the meter to better manage water usage.

Neighbors of a California refinery were kept up at night by a loud, whining sound emanating at all hours of day from the facility, says Valve Magazine. Engineers struggled to find the source. Vibration analysis pinpointed the problem, finding that tolerances between plug assemblies and quench valves were too large, which caused vibration and resonance. A new cage-guided valve design and digital valve control solved the noise problem.

Mastering a new equation can simplify proper sizing of pressure-relief valves for critical flow of gases or vapors. The equation uses real gas specific heat ratio. In this Hydrocarbon Processing story, the equation is compared to the conventional API sizing equation (Standard 520). A critical-flow equation with the isentropic flash is introduced as a recommended estimation tool when gas or vapor deviates significantly from ideal conditions.

Approved for use in EPA's GHGRP. MISTRAS' VPAC™ line of digital Acoustic Emission leak detectors correctly detect through valve leaks estimating the quantity of material leaking through the valve.

The new VPAC™II determines if valves are leaking, where they're leaking, and the rate they're leaking. More information on our VPAC™ line.

For multi-unit residential and commercial installations requiring the security of two pumps, Liberty's 1100-series provides the assurance of uninterrupted operation. Factory pre-assembled with any of Liberty's LE-Series sewage pumps — you select the pump and control panel, we build the system for you!

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