Posted to News on 14th Nov 2006, 17:19
High-flow, high-speed NAMUR valves are EExd rated
Alcon's new high-flow, high-speed EExd NAMUR series solenoid valves are designed for use in hazardous areas and extreme environments. Offering universal 5/2 or 3/2 operations in offshore, processing and chemical industries, the series is suitable for piloting single or double actuators on NAMUR solenoid valves. With an explosion-proof, submersible, water-tight and dust-tight aluminium body, the valves are suitable for use indoors or outdoors; Nitrile seals ensure reliable operation while meeting requirements for operation in a wide range of environments.
Alcon Solenoid Valves, a division of International Motion Control, has been designing and engineering solenoid valves for over fifty years. Whether the need is for a standalone valve or bespoke equipment for a customer's particular application, Alcon has built up an enviable reputation as a global supplier of high-quality valves to a wide range of customers across a multitude of industries.
Alcon NAMUR series solenoid valves are designed for use with actuators controlling butterfly and ball valve systems in hazardous areas found in offshore, paper, recycling, food processing and chemical industries. A solenoid-activated spool valve system allows for rapid response times of up to five cycles per second, and the duty cycle of the coil has been 100 per cent continuously rated for a multimillion-cycle life span.
The ATEX-approved, EExd, hard-anodised, IP67, aluminium solenoid enclosures feature two mounting holes and can be rotated through 360 degrees to assist with fitting. Integrated exhaust ports allow users to manually convert from a 5/2 to a 3/2 configuration, as well as enabling variable speed control during 3/2 operation. With a manual override screw for ease of maintenance and repairs, the valves also feature a high-flow design (Cv = 1.4), allowing for faster operation with larger valves.
The new valves offer an operating pressure window of between 37-150psi (2.5-10bar) and deliver reliable operation in environments where fluid/gas temperatures from -10degC (14degF) up to +80degC (176degF) can be expected. Coil voltage can be 12 or 24V DC, and AC operation is possible with 24, 110, 120, 220 or 230V at 50/60Hz.
