An Air Operated Valve is a type of power operated valve that uses air pressure against a piston or diaphragm to produce linear or circular movement to operate a valve.
High Pressure Equipment Company offers five lines of air operators to accommodate remote operation of pressure valves up to 100,000 psi. Various models of diaphragm and piston operated valves are available in both normally open and normally closed models, and can be controlled by air regulator, electrical solenoid or low pressure manual valve. The Remetco line of air operated metering valves provides remote operation for fine metering applications.
Valves for Precision Dispensing Dispensing Valve Selection Chart (PDF, 211 KB) Cartridge Valve Don't know which valve is best for your material or process? The I&J Fisnar valve chart shows all of our valves, along with the materials and applications they are designed for. The chart will open in a new window for easier viewing. A lightweight valve that is suitable for hand held operations or can be integrated into high cycling automated dispensing applications. The cartridge valve has a maximum fluid pressure of 300psi and can dispense low and medium viscosity fluids such as silicone, RTV, oils, grease, and lubricants. Diaphragm Valves Pinch Tube Valve Diaphragm valves provide precision micro-shot dispensing of liquids such as cyanoacrylates, solvents, electrolytes, alcohols, and acids. A single part diaphragm and seal separates the wetted parts for reduced maintenance. Diaphragm valves for UV cure and anaerobic materials are also available. A pinch tube valve can be used in many situations, it is regularly used for volatile fluids, such as in cyanoacrylate and solvent dispensing. The advantage of this valve is that the wetted parts are replaceable at a low cost. Because of this, the valve can also be used with two-part resins and placed at the end of a static mixing nozzle. High Pressure Valves Spray Valves Designed for dispensing high viscosity materials, these high pressure valves are can accept over 3,000 PSI of fluid pressure. The 790HPNM spool valve is engineered for high viscosity silicones and greases. The LV0126NM needle valve is suitable for small shots and beads of high viscosity. The valve is adjustable for shot size tuning. I&J Fisnar Spray Valves are designed for dispensing urethane, paint, flux, and lubricants and for conformal coating applications. All spray valves are made of stainless steel and provide close tolerance spray dispensing. The spray nozzles are specially engineered to prevent material clogging and a stroke adjustment provides accurate dispensing. Positive Displacement Valves Poppet Valves Positive displacement valves are available as either servo driven auger valves or peristaltic dispensing pumps. An auger valve is a servo motor driven valve suitable for dispensing high viscosity pastes. A peristaltic dispensing pump is a volumetric valve with an adjustable chamber for accurate deposits. Poppet valves are multipurpose valves suitable for small shots and bead dispensing of medium or high viscosity fluids such as silicones, grease and paste. Poppet valves can dispense up to 300 times per minute and are developed with a suck-back feature to prevent post-dispense dripping. Needle Mini Valve A lightweight needle valve designed for hand-held dispensing of micro-shots and small beads of medium viscosity materials. The valve is available with stainless steel wetted chambers for UV cure dispensing, plastic chambers for anaerobic dispensing, or aluminum for dispensing silicones, grease and lubricants.
AIR OPERATED SOLENOID VALVE
Definition:- The term solenoid usually refers to a coil used to create magnetic fields when wrapped around a magnetic object or a core. In engineering terms, the solenoid describes the transducer mechanisms used to convert energy into motion. Solenoid valves are controlled by the action of the solenoid and typically control the flow of water or air as switch. If the solenoid is active , it opens the valve. If the solenoid is inactive, the valve stays closed. The action of pneumatic solenoid is controlled by the use of pneumatics. The opening or closing of a valve is referred to as "changing state."
PNEUMATIC ACTUATED
Pneumatic actuation refers to a valve being tripped through the use of compressed air (gas). At a particular point in an industrial or manufacturing process, compressed air is released, causing a valve to open or close. The combination of solenoids and pneumatics is twofold. Solenoid valves are used in pneumatic processes and solenoid valves and pneumatic valves are used in combination. The combined valve is called a piloted valve. The larger solenoid valve is triggered by the smaller pneumatic valve. The pneumatic valve can act as an air cylinder contained in a main valve. A pneumatic solenoid valve is also referred to as a compressed air pilot valve.
BENEFITS OF PILOTED VALVES
Pneumatic valves are usually run by air captured during a previous or ongoing process. Since they are being used to trigger larger valves and aren't requiring more cost, they are a cheaper economical way to power a solenoid valve. Compressed air can result in huge forces available to act on another valve and be recycled after its done its job. Its actual design or footprint is very small, so it doesn't add very much weight to the mechanism.
TYPES OF PNEUMATIC SOLENOID VALVES
Valves can be designated as internally piloted or externally piloted. The valves can further be categorized by the number of connections or paths for flow they contain. Externally piloted valves use an external source of air pressure. Internally piloted use an internal source of air pressure. Two-way piloted valves can be used in dust collector systems. An internally driven pilot valve with four-way connections are generally found in pneumatic operations and are used to move double action cylinders. Pneumatic solenoid valves can be designed as stackable.