TPi September 2017

products & developments Smaller proportional solenoid cartridge valves with improved performance

condition. The size 10 ESV9 valve has a rating of up to 22 litres per minute and up to 250 bar. “The introduction of the ESV9 series will help provide significant up-front cost savings to our customers, complementing Eaton’s Cetop 3 industrial-rated, high-flow KDG4-V3 series,” said Andreas Kling, product marketing manager power and controls products EMEA at Eaton. As an option, the valves are available with a manual override and can additionally be fitted with or without the IP69K compatible ‘L Series’ Large ToughCoils™. 12V or 24V DC coil voltages, with or without a diode, can be selected, along with a number of housing materials (steel or aluminium) and port sizes.

Power management company Eaton has introduced the ESV9 series of proportional solenoid cartridge valves, aimed at offering a general-purpose alternative to industrial-rated valves. The ESV9 valves are smaller, reducing the manifold size, and allow increased flexibility during installation. The valves offer control with optimised linearity, operational efficiency and low hysteresis of less than 7 per cent. Broader ramp changes also allow greater resolution. The size 10 ESV9 is a four-way three- position screw-in cartridge, and is available with either a type E or F spool configuration. The E spool type solenoid valve has all the ports closed in the de-energised position. This valve is suitable for moderate flow applications where an actuator needs to be proportionally controlled in both directions and stopped in any position. With the F spool in the de-energised condition, ports two and four are open to tank with the inlet port three blocked. This allows the service ports to decay to tank pressure in the de-energised Val-Matic’s Swing-Flex ® and Surgebuster ® check valves are designed for years of maintenance- free service. Both valves have a short 35° stroke, which provides fast closure to minimise slamming and slam-related surges. The Swing-Flex check valve has a non-clog design with only one moving part. It is constructed of ductile iron with cold working pressures up 250 psi, making it an option for systems where traditional 125-lb valves are unsuitable and for those where surges may be a concern. The valve design and performance has been verified through an independent million-cycle test and fully complies with ANSI/AWWA C508. The valve’s

Applications include construction machinery, agricultural, material handling and a broad range of general equipment. Eaton – Switzerland www.eaton.com Swing-Flex and Surgebuster check valves ESV9 proportional cartridge valve

mechanism that closes the valve disc rapidly, avoiding slamming by flow reversal yet allowing the disc to be stabilised under flow conditions. The accelerator is fully enclosed within the valve and completely out of the flow path. The Surgebuster is suited to a number of applications, including high head, multiple pump and surge tank installations. The valves are both NSF/ANSI 372 Cer- tified Lead-Free, NSF/ANSI 61 Certified for Drinking Water, and designed and built in accordance with AWWA C508. Val-Matic Valve & Manufacturing Corp – USA valves@valmatic.com www.valmatic.com

Swing-Flex and Surgebuster check valves from Val-Matic

smooth, unrestricted flow path makes it a suitable choice for sludge and slurries. The Surgebuster check valve has all the design features of the Swing-Flex, with the addition of the Disc Accelerator™ to prevent slamming in the most severe applications. The Disc Accelerator is a precision-formed stainless steel

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TUBE PRODUCTS INTERNATIONAL September 2017

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