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Alcon introduces new explosion proof solenoid valve
Alcon engineer in rapid response times and flexible operation to their new EExd Solenoid valve
The new high-flow high-speed EExd NAMUR series solenoid valves from Alcon, are designed for use in hazardous area / extreme environment applications. Offering universal 5/2 or 3/2 operations in offshore, processing and chemical industries, the series is ideal for piloting single or double actuators on NAMUR solenoid valves. An explosion proof, submersible, water tight & dust tight aluminium body suitable for indoor or outdoor use, along with Nitrile seals ensures reliable operation while meeting requirements for a wide range of environments.
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Alcon Solenoid Valves, a division of International Motion Control, has been designing and engineering solenoid valves for over fifty years. Be it a stand alone valve or bespoke equipment for a customers particular application, it has built up an enviable reputation as a global supplier of high-quality, reliable solenoid 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 5 cycles per second, and the duty cycle of the coil has been 100% 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 O 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 ( Cv = 1.4) design allowing for faster operation with larger valves.
The new valves offer an operating pressure window of between 37 – 150psi (2.5 – 10 bar) and deliver reliable operation in environments where fluid/gas temperatures from -10° C (14° F) up to +80° C (176° F) can be expected. Coil voltage can be DC, 12 or 24v and AC operation is possible with 24, 110, 120, 220, 230v – 50/60Hz voltages.
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New angled bodied valves from Alcon increase flow rates and reduce problems
Valve glands are designed to be maintenance-free, and 316 stainless steel is used in the body construction offering maximum internal and external protection form liquid and gases.
Designed for water, steam and corrosive fluid applications, Alcon has introduced the ASAST series of 316 stainless steel valves, offering improved life particularly in high temperature process applications. By directing the flow of fluids and gases under the valve seat, the angled body design promotes higher flow rates while eliminating traditional problems associated with water hammer, helping to prolong the operating life of the valve and ensuring a smoother delivery of fluid.
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Alcon has applied over 50 years experience and used state-of-the-art materials in order to maximise performance and minimise maintenance of the new extreme environment ASAST valves. Inert to all but a few obscure substances a PTFE (Teflon) is used in the main seal to maintain performance across a wide range of temperatures, allowing the valves to reliably control fluids and gases from –200 OC to +180OC (-328 ° F to +356 ° F).
Taking into account any future maintenance operations at the design stage, Alcon have angled the main body of the valve to reduce the height of the unit. This allows engineers in compressed air, packaging, water and paper processing industries to develop smaller, more compact systems with additional room for maintenance operations. Ease of fitting and maintenance has been further improved by the introduction of an optical indicator, which allows easy identification of valve position; the body of the valve can also be rotated 360 O for quicker status checking.
Remote control is achieved via 13mm BS21 or NPT port connections for single spring return or double acting compressed air piloting arrangements. Alternatively the valve bodies are designed for the attachment of Alcon 31 Series solenoid pilot valves for electronic operation. Control inputs can come from 12v, 24v, 48v, 110v DC sources or 24v, 110v, 120v, 220v, 230v, 50/60HZ AC supplies . The valves cater for pipe sizes from 13mm (1/2”) to 50mm (2”) and are available with NPT, BSP, Butt or Socket Weld fitting arrangements, high flow rates of up to 52.8Kv are possible using the 50mm (2”) unit. Alcon ASAST series valves function reliably in external temperatures ranging from -10 ° C to +60 ° C (+14 ° F to +140 ° F). |
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