ASCO Numatics low power Ex d pilot valve

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Last modified: 8 May 2023

ASCO Numatics announces the new (WS)LPKF low power pilot with Ex d certification for the compact 551, 552 and 553 series pilot valves. The valve is available with either an aluminium or stainless steel enclosure, and with a power consumption of just 0.5W at 24V DC, has the lowest consumption of any Ex d certified valve for the process industry. The low wattage coil reduces battery drain and heat rise, minimises wiring costs and provides energy savings. The savings in power usage over the installed life of the solenoid valve lower the total cost of ownership.

Compatible with the ASCO Numatics 551-553 ranges in aluminium, brass (551 range only) and stainless steel, the valves have a large flow range of up to 860 l/min for the 551 valve and 3800 l/min for the 553 valve. Certified according to ATEX, IECEx and FM, the new range is ideally suited to applications in the offshore market where high levels of safety and superior resistance to aggressive operating environments are required.

The housing and cover of the enclosure are in 316L stainless steel or painted aluminium and the operator can be rotated 360° to select the best position for cable entry. Electrical connection is via either a shielded or unshielded cable gland (½ NPT) to easy access screw terminals.

The enclosure is supplied with a plastic exhaust protector fitted as standard and a metal exhaust protector is available as an option. The operators are suitable for use in ambient temperatures from -40°C to +60°C, and the flameproof enclosure is rated to II2G Ex d IIB + H2 T6, II2DEx tD A21 IP67 T85°C, Certification: IECEx, ISA and EN 60079-1, 61241-1.

Written by

Emerson (ASCO Controls BV)

Emerson (NYSE: EMR), headquartered in St. Louis, Missouri (USA), is a global technology and engineering company providing innovative solutions for customers in industrial, commercial, and residential markets. Our Emerson Automation... Read more