Humphrey ProControl' Proportional Solenoid Valves are an excellent option for pneumatic applications that require variable or controlled valve output flow.
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Proportional valves are small two-port, normally closed, direct-acting solenoid valves. They respond precisely to the amount of input current applied to its solenoid. From a stabilized upstream pressure source, customers can expect precise and consistent variable output flow performance for millions of cycles. Output flow adjusts precisely to minor changes in input current.
Proportional valves can enhance pneumatic system performance with soft starts, precision stops, and reduced shock during operation. In closed-loop systems, proportional valves will deliver precise flow control and instantaneous response, even with minute adjustments from input sensors.
Today, Humphrey offers three standard valve models and two customizable valve platforms from our Engineered Solutions group. Standard models:
Modifications to standard valves are possible and welcomed. Humphrey can optimize valve performance with an understanding of OEM customer requirements. Contact .
The ProControl' Servoid Series are tailored to specific customer requirements. Featuring very high flow from a low supply pressure source, the Servoid Series can deliver extremely precise and linear output flow with low hysteresis and high-resolution characteristics.
Most OEM customers drive proportional valves from their onboard PCB. For others, Valve Drivers are available and are used to take input signals sourced from sensors and deliver appropriate output current to operate the solenoid. Customers use drivers to test, evaluate and use proportional valves on benchtops or in proportional valve projects. Humphrey offers its driver with the ProControl' PCD.
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A proportional valve features a vast array of advantages that are functional on an operational level. Here you can find a list of the most common benefits.
Proportional valves are designed to monitor the systems' flow and pressure rate. They can easily adapt to many different contexts as they can be fine-tuned at any time in order to align with specific needs. Unlike solenoid valves, proportional valves can be adjusted as they allow more control over the system's regulation processes.
One of the main advantages of a proportional valve is a significant increase in energy efficiency. As a matter of fact, these systems need less manual operations to adjust flow and pressure rates, resulting not just in an economic benefit, but also in a sustainable optimizationof energy consumption.
Proportional valves can adapt to many different contexts and applications - from industrial automation to Food&Beverage and delicate medical systems. They can also manage a variety of fluids and pressure rates, ensuring excellent performances in every field they may be applied to.
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Accuracy and constant monitoring mean improved safety. In fact, these systems prevent sudden fluctuations that can lead to operational shifts and malfunctions.
Nowadays, proportional valves are more dynamic and smart. The integration of IT electronics enables operators to monitor performance in real-time, easy access to reports, and feedback mechanisms, enhancing their functionality and reliability.
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While the proportional valve advantages are significant, it is important to be well aware of certain challenges that may arise.
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