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Focus on Valves

| By Gerald Ondrey

GEMÜ

 

 

A new motorized control valve for the semiconductor industry

The 2/2-way diaphragm globe valve C53 iComLine (photo) was developed for precise and demanding control applications in semiconductor production. The sealing concept of the valve is based on the company’s PD design, with actuator and medium separated by a regulating cone made of resistant polytetrafluoroethylene (PTFE). As the regulating cone contour, actuator stroke and connection size can be customized, the C53 iComLine satisfies virtually all control and flow requirements of the high-tech semiconductor industry. Thanks to the combination of the precise stepper motor with ultra-pure body materials, the valve is particularly suitable for lithography, CMP and etching processes, as well as applications in the analysis field of any semiconductor production process. — GEMÜ Valves, Inc., Atlanta, Ga.

www.gemu-group.com

Posi-flate

Stainless steel butterfly valve seals with inflatable seat

The Posi-flate butterfly valve with a highly polished 316 stainless-steel housing and disc (photo) is suitable for many applications, such as food, chemical and pharmaceutical manufacturing. The inflatable seat design of this butterfly valve provides a better seal by utilizing air pressure to expand the seat against the disc, providing more sealing area and an even pressure distribution against the disc every time. The seat automatically compensates for wear when it inflates against the disc, extending valve life considerably. Because the Posi-flate disc only makes casual contact with the seat during opening and closing, torque requirements are substantially lower. The Posi-flate stainless-steel butterfly valve is available in sizes ranging from 2 to 20 in. — Posi-flate, St. Paul, Minn.

www.posiflate.com

 

 

 

Asahi/America

A new ball valve for precision flow control

The Type-21a Seat Support Technology (SST) flow-control ball valve (photo) offers all of the robust elements of the Type-21 and the ability to precisely control flow. Available in½- to 2-in. sizes, the SST ball valve features a precision-machined polyvinylchloride (PVC) ball with center provisions to support PTFE seats from 0 to 100% of capable flow. The Type-21a SST ball valve produces equal-percentage flow characteristics for fine throttling. The valve requires directional installation and comes equipped with a flow-direction label. Manually operated SST ball valves include a 0-to-100 deg indicator plate and an indicator line on the handle, which doubles as a carrier adjustment tool. The valve body is PVC with either EPDM (ethylene propylene diene monomer) or FKM (fluoroelastomer) O-rings. — Asahi/America, Lawrence, Mass.

www.asahi-america.com

 

 

 

Cowan Dynamics

This new valve actuator takes up less space

Launched in March, the E2HR Series Electro-Hydraulic rotary valve actuators (photo) are said to pack high performance into the smallest possible installation envelope for¼-turn valve-actuating applications. All hydraulic components and sensors are integrated into a single compact manifold block that also houses the actuator and integral oil reservoir. The control panel can be mounted directly to the manifold block or installed remotely to run multiple units from a single control panel. This self-contained actuator can be installed either vertically or horizontally and has no external piping. The actuator delivers a torque of up to 300,000 in-lb, has a duty cycle of 100% and can operate at temperatures from –50 to 40°C. Partial-stroke testing can be initiated from the touchscreen or remotely. — Cowan Dynamics, Inc., Montreal, Que., Canada

www.cowandynamics.com

 

 

 

Conval

 

 

Bellows seal valves for when leakage is not an option

Low-pressure ASME Class 150-900 Clampseal bellows seal valves (photo) are suitable for demanding toxic, corrosive and caustic applications, as well as regulation of severe-service process control where leakage to the environment is not an option. They feature low weight and seismic profile; leak-proof integrity; in-line servicing; high cycle bellows; high flow capacity; and no fugitive emissions. The valves are available in ½- through 4-in. sizes with socket weld, butt weld, flange and threaded end connections. High-pressure Clampseal single- and double-bellows seal valves for up to ASME Class 2500 are suitable for applications where packed valves may not reliably contain light gases or hazardous system fluids due to leakage in the stem/packing seal area or stuffing box wall/packing seal area. — Conval, Inc., Enfield, Conn.

www.conval.com

Swagelok

Ball valve brings added safety to high-flow applications

The full-bore, bidirectional flow-capable GB Series ball valve (photo) is engineered to provide high flowrates at a working pressure of 6,000 psig (413 bars) while simplifying installation, minimizing rework requirements, and delivering the reliable shutoff performance needed to keep workers safe and systems operating efficiently in a variety of demanding applications. Integral end connections range in size from 3/8 to 1 in. To reduce corrosion in harsh environments, the GB Series ball valve is available in a variety of alloy materials, such as 6-Moly, Alloy 2507 and Alloy C-276, as well as materials selected in accordance with NACE MR0175 for sour-gas applications. The valve also complies with ASME B31.1 and B31.3 standards for power and process piping systems. — Swagelok Co., Solon, Ohio

www.swagelok.com

 

 

 

 

Badger Meter

 

Smart actuator optimizes control-valve performance

The new Smart Electric Valve Actuator (SEVA; photo) withstands extreme conditions while providing exceptional position accuracy. The SEVA now offers Modbus RTU, Modbus TCP/IP and SoloCUE connectivity. SoloCUE is a software solution that provides easy access to the setup of both the feature-rich SEVA and its protocols. This custom-built, bulletproof platform allows end-users to visualize SEVA’s performance and setup characteristics. SEVA is designed for extreme conditions, and the actuator has military-grade components. SEVA has 100- and 200-lb thrust models. There are several options available for communication protocols, including Modbus RTU, Modbus TCP/IP and the Industrial Ethernet Protocol (EtherNet/IP). It is certified by FM, EX, CSA and CE. The actuator allows for both linear and Device Level Ring (DLR) ring network topologies. — Badger Meter, Milwaukee, Wis.

www.badgermeter.com

 

 

 

Schroedahl

All-in-one pump protection automatic recirculation valves

The new, self-modulating TDL Automatic Recirculation Valves (photo) in 10 and 12 NPS are now available with high bypass flow, offering maximum flexibility in bypass trim sizes for pumping systems. These reliable all-in-one pump-protection valves are designed to keep pumping systems modulating and running smoothly, without cavitation, vibration or overheating. Without minimum flow, a pump can quickly suffer grave damage, causing downtime and costly repairs — but control valves for recirculation require continuous control of complex equipment, a flow measurement device, control unit and energy supply. Unlike control valve packages, these self-operated flow-sensitive valves operate without a separate power supply or any control system, and begin protection immediately once installed. — Schroedahl GmbH, a subsidiary of Circor International, Reichshof-Mittelagger, Germany

www.schroedahl.de

 

 

 

 

Emerson

New virtual valve-repair service offers immediate support

The new Remote Assistance service capability (photo) was launched in April to help plant operators immediately respond to industrial valve issues by using augmented reality (AR) technology. The AR technology uses a robust, secure channel certified as ISO 27001-compliant. Valve repairs are advised and guided by this company’s experts as part of its expanding Connected Services portfolio in its Plantweb digital ecosystem. Using a mobile device, plant personnel can securely share their field of view through the AR software as valve experts help troubleshoot and solve valve problems. Step-by-step instructions are overlaid in the field-user’s application to support installation, calibration or repair actions. The Remote Assistance service is available for this company’s valve, actuator and regulator product portfolios, and in some instances, can cover other companies’ products. — Emerson, Marshalltown, Iowa

www.emerson.com

A host of check valves for trouble-free performance

This company’s Surgebuster, Dual Disc, Silent Check and Sure Seal Foot Valve check valves are highly engineered to provide long life and trouble-free performance. Engineers weigh the importance of slamming characteristics as one of the factors when selecting a check valve. All check valves are designed with non-slam characteristics, such as the seat angle of the Surgebuster. The Surgebuster also uses the addition of the Disc Accelerator to prevent slamming in the most severe applications. The compact wafer design has made the Dual Disc a popular choice when space is a concern. The short linear stroke and spring-return action of the Silent Check Valve combine to effectively eliminate surges and water hammer that can be associated with the sudden stoppage of a reverse flow. The versatile Foot Valve can provide positive seating action at both low and high pressure without slamming. — Val-Matic Valve & Manufacturing Corp., Elmhurst, Ill.

www.valmatic.com

Rotork

A new, enhanced digital smart positioner

The new enhanced YT-3700 and YT-3750 digital smart positioners (photo) can be used for both control and on/off valve applications where diagnostics are required. The YT-3700 and YT-3750 pneumatic smart positioners employ continuous monitoring and graphic display of valve position, setpoint target over time and internal circuit board temperature over time. Valve diagnostic information to NE107 standard is provided, with HART 7 communication protocol included as standard and a display for all settings and local device interaction. Commissioning can be handled locally without the need for an additional device. — Rotork plc, Bath, U.K.

www.rotork.com

 

 

WIKA

Compact ball valve handles heavy-duty applications

As first shut-off valve or for connecting pressure measuring instruments, the new model BV ball valve (photo) is suitable for a variety of applications. It is available in process and instrument versions. The instrumentation valve is compact and can therefore also be integrated in space-restricted environments, such as a control panel. Thanks to its robustness, the model BV is suitable for heavy-duty applications and processes with critical media. Its pressurized parts correspond to the safety factor 4:1, its leak tightness has been tested in accordance with BS 6755 / ISO 5208, leakage rate A. An antistatic design, a blow-out-proof valve spindle and self-relieving valve seats ensure the safe operation of the ball valve. — WIKA Alexander Wiegand SE & Co. KG, Klingenberg, Germany

www.wika.com

 

Spartan

New members added to this line of valves

This company’s line of air-piloted valves now includes the APVS Media Separated Valve Series (photo). This new series is comprised of four different styles of APVS valves and provides many versatile options for handling caustic media, all while allowing safe operation in volatile areas. The series includes inert gas/spring-operated valves to control high-purity, aggressive and corrosive liquid chemicals while allowing a flowrate superior to other similar valves on the market. Each APVS Valve can be configured to meet critical user requirements with ordering options that include various port sizes, diaphragm seal materials, pilot options and valve function. In addition, an optional magnetic piston is available for end-of-stroke position sensing and can be combined with a magnetic position sensor to maintain positive feedback. — Spartan Scientific, Youngstown, Ohio

www.spartanscientific.com