Hydraulic valves that are electrically operated by proportional solenoids are called proportional control valves. Commonly termed electro-hydraulics because they are controlled by electronic amplifier control boards, proportional control valves are rugged valves that are perfectly suited for automated control applications. These valves control the direction and the amount of fluid flow or can control the amount of pressure within a system. If you are looking for automated control solutions, Hanbay can help you find proportional control valves that would suit your applications. Hanbay is one of Canada's leading manufacturers of electric valve actuators that was first established in 1986 in Montreal, QC, Canada. Apart from its high quality miniature electric valve actuators it is also noted for its turnkey solutions for process automation and control of all kinds.
Proportional control valves are especially useful in applications that require tight control of speed or where ramping up and down is necessary to avoid sudden starts and stops. When hydraulic pressure needs to be built up steadily, proportional control valves can provide precise control of the system. As a result of using proportional control valves, production is increased while down time is reduced due to only minimal shocks occurring from sudden changes. The valves can be used in open or closed loop systems and may have integrated electronics or separate amplifiers. Choosing appropriate proportional control valves for any system application needs to take into consideration a number of factors such as flow ranges, pressure output control ranges, response time and compatibility of valve parts with fluid pressure, temperature and corrosion resistance. If you are not sure how to go about selecting the correct proportional control valves for your specific needs, you can contact Hanbay at secureinfo@hanbayinc.com where professional engineers and technicians will guide you on making the right valve choices.
There are a number of different types of proportional control valves that include proportional directional control valves, high response proportional directional valves, proportional pressure relief valves, proportional flow control valves and proportional pressure reducing valves. Proportional control valves that are directional are low cost designs that are perfect for many applications. These valves do not have a spool feedback for manual and open loop applications and can be direct or pilot operated. These valves also work well in many closed loop applications and come as 2-way, 3-port, 4-way and 5-way proportional control valves. High response proportional directional valves are used in closed loop systems to control position, velocity, pressure or force. Proportional control valves that have electronically adjusted orifices with pressure compensation make up the flow valves and are also available as 2-way, 3-way or bi-directional valves.
Proportional pressure relief valves limit the pressure in a hydraulic system where the limit is set electronically and excess flow is returned to the tank during pressure relief. Pressure reducing proportional control valves regulate downstream pressure in a branch circuit where excess pressure build up or over shoot is prevented as well as under pressure during changes in desired pressure conditions. These proportional control valves continue to operate correctly even if the flow becomes static. For more information on turnkey solutions for process automation and control of all kinds, visit www.hanbayinc.com.
