ASCO Numatics has expanded its range of pilot valves for the process industry with the introduction of the 1/2in stainless steel 316L version of the Series 553 Spool valve. The new range meets the growing demand for pilot valves that are suitable for use in aggressive environments and explosive atmospheres. The new valve is resistant to the cleaning products used in the food industry and the solvents and other compounds found in the chemical and plastics industries. Designed to provide long-term reliability under harsh operating conditions, the valves also offer high levels of environmental protection against the ingress of dust, liquids and other foreign matter. ATEX approval to category 2GD zone 1/21 makes them suitable for use in explosive atmospheres typically found in oil and gas applications both in refineries and offshore. Central to the operating reliability of the 553 range is an environmentally protected construction. The use of stainless steel for the internal parts together with the non-breathing design and the ability of the valve to operate on dry air means that they are suitable for use in sensitive areas. Available as 1/2in tapped Gas, NPT and NAMUR, the 553 series of valves offers high flow rates (up to 3800l/min). The valves also accept any ASCO Numatics solenoid variant, including IP65 rated epoxy moulded units and those to UL and CSA standards.
