The new directional control valve type ROLV from HAWE Hydraulik is a directional valve and shut-off valve in one. With a CETOP 3 standard connection pattern it can be integrated directly into valve banks as a flexible control block. Connection blocks for direct pipeline installation are also available. In use, the machine designer and plant…

Pressure valves use a poppet, ball or (rarely) a spool pushed offset by a spring, and that description you’ll find accurate for nearly every pressure valve ever made. This is because a pressure valve simply resists hydraulic pressure until the force to overcome its spring rises above the value of that spring — common sense. […]

In the most traditional sense, a directional control valve simply dictates the direction of hydraulic flow in some regard. The inline check valve is generally regarded as the most basic version of a directional valve, and simply allows flow in one direction while blocking flow in the opposing direction. Their advantage lies in their simple, […]

By Josh Cosford, Contributing Editor Although many valves have a manual adjustment, as the knob on a flow control or the hex screw on a relief valve, we generally consider a manual valve to be a directional valve operated by a lever, button or knob. Many hydraulic systems run exclusively with manual valves, like your […]

By Josh Cosford, Contributing Editor In fluid power, safety is always a concern. Everyone understands the force capacity of hydraulic actuators (which explains why some YouTube hydraulic press channels have millions of subscribers). Indeed, a high-powered hydraulic press can make nearly any material appear no stronger than modelling clay. It’s wise to respect the power […]

Winners of the 2021 LEAP Awards (Leadership in Engineering Achievement Program) were announced this afternoon in a digital ceremony, with products across 12 categories. This annual competition saw a record number of submissions, as it aims to celebrates the most innovative and forward-thinking products serving the design engineering space. This year’s winners were chosen by […]

Linde Hydraulics GmbH & Co. KG has introduced a new generation of control valves for use in wheeled excavators. The new valve block VW 22/18 M5-03 for the open circuit is characterized by its modular system, while the monoblock with five sections plus pressure relief section represents the basic set-up. Optionally, three additional sections can […]

By Josh Cosford, Contributing Editor Check valves are the most basic form of directional valve. In their simplest form, a check valve has the singular task of allowing flow in one direction while blocking flow from returning in the opposite direction. These valves are not only simple in their operation but also simple in their […]

By integrating pneumatics technologies, consumer packaged goods companies can reduce their carbon — and equipment — footprint. Contributed by Mark Densley, Director Business Development Factory Automation, Emerson Customer demand, as well as a sense of environmental responsibility, is driving consumer packaged goods (CPG) companies to drastically reduce their carbon footprint. While many companies seek ways to make […]

The M35 series valve from Ross Controls is designed to supply air to a zone or entire machine/system until signaled to shut off and exhaust residual downstream pneumatic energy from the machine. This reduces the hazards associated with the presence of residual energy during employee access and/or minor servicing. The safety function of the M35 […]

By Josh Cosford, Contributing Editor Cartridge valves are a type of compact hydraulic valve that slips or screws into the machined cavity of a ported manifold or block. Unlike other valves, such as monoblock lever valves or stackable industrial valves, the manufacturer leaves the porting for you to decide. Cartridge valves still use poppets or […]

The RPEI electrohydraulic inverse proportional pressure relief valve is a new high-capacity pressure control that provides smooth, precise speed control in fan drive applications. Designed for use in fan drive applications, the RPEI combines attributes of an electro-proportional adjustable pilot stage valve and a high-capacity main stage valve to provide precise pressure control inversely proportional […]

The AirFlowSaver supplies energy- and cost-optimized compressed air based on unique SmartValve technology. Contributed by Wolfgang Teichmann, CEO and Markus Koenig, CSO, KTW Technology, Wehr, Germany nad Andy Pott, Vice President, PHIR Technologies, Hartland, Wisconsin For well over a century, compressed air has been commonly used across many industries because it is a simple, flexible and […]

By Josh Cosford, Contributing Editor The line that separates the performance of servo and proportional valves has blurred in recent years. Some may consider a servovalve to be any valve capable of accurately positioning your actuator with closed-loop control. However, in everyday hydraulic circles, many industry professionals describe a servovalve as a valve with a […]

Far-reaching hydraulics powers a show-stopping display. Contributed by Paolo Leutenegger, General Manager  •  Duplomatic Motion Solutions, Parabiago, Italy  Expo 2020, delayed by the Covid-19 pandemic, opens October 1 in Dubai. The world’s fair, set to welcome 190 participating countries with an estimated 25 million visitors from across the globe, aspires to increase awareness about the…

Argo-Hytos is launching new sophisticated and versatile proportional electronic control units for hydraulic applications. The EL7 control unit offers multiple types of analog input signals (nine) and also gives the user the option to switch to the CAN bus interface. Everything is easily parametrizable via Bluetooth using the ARGO-HYTOS app, which is free to download […]

Distributed automation options have been improving for many years. Networked electro-pneumatic solenoid banks give machine builders smart and convenient choices. Kevin Kakascik, Technical Marketing Engineer, AutomationDirect Most automated machines and systems incorporate some number of enclosures and panels for housing controls components. However, these centralized devices typically must interconnect with many more field sensors and […]

Doering’s hydraulic inline pressure relief valves are an easy way to protect any hydraulic system from pressure spikes. Easy to install and durable for a long life. HRV-HRVF-HRVM High Pressure direct-acting relief valves are normally closed, pressure-limiting valves used to protect hydraulic systems from pressure spikes. When the pressure at the inlet reaches the pressure […]

The new Festo KVZA Butterfly-Valve Configurator lowers overhead by speeding up and simplifying procurement of manual and automated butterfly valves. In only minutes with the configurator, engineers will have the price, estimated delivery date, data sheet, bill of material, 2D CAD data, 3D CAD models, and certificates of the optimum butterfly valve for the application. […]

Contributed by Mike Giammo, product sales manager, and Mitch Eichler, business development manager, Parker’s Hydraulic Valve Div. Parker Colorflow valves have been a global standard in industrial and mobile applications for more than 60 years. The exclusive colored rings found on metering, flow control and needle valves provide users highly visible checkpoints that allow for […]

Festo recently introduced the manually operated VHEF and the mechanically operated VMEF pneumatic valves. These small, durable, and versatile valves are core Festo products and guaranteed to ship within 24 hours. Whether the valve is triggered by a workpiece, a component, or a person, manual and mechanical valves are the most direct way to control […]

The DS-Double Selector hydraulic valve from Doering is a two position, six-way, double selector valve which directs the flow of hydraulic fluid to two separate hydraulic circuits within your hydraulic system. This flow divider valve allows the operation of two double-acting cylinders with one four-way control valve or four single-acting cylinders with two-three-way control valves. It […]

With the newly developed generation of digital on-board electronics for hydraulics, Rexroth allows economical scaling between analog components and those with a fieldbus/Ethernet connection. It takes advantage of the economic benefits of digitalization with no additional cabling. The new generation provides the open interfaces Bluetooth and IO-Link. In conjunction with a suitable app, commissioning engineers,…

The Cordis flow controller utilizes an extremely fast-reacting mems technology sensor upstream from a proportional valve, with the option of a DR-2 regulator for accurate and precise pressure control in a small package. Unlike other mass flow controllers that require a 30-minute warm-up time, large differential pressures, and limited flow ranges, the Cordis requires less than […]

Flexible and adaptable, the Pre-Compensated Valve Platform makes it easier for mobile machine builders to selectively combine a range of hydraulic control valves into a single, integrated, multifunctional control solution to match specific operational and performance requirements. With the Pre-Compensated Valve Platform, Bosch Rexroth has engineered a solution that combines multiple valves with minimal need […]