Proportional valves add options to mobile equipment system designs

Two new hydraulic valves for the off-highway equipment industry are intended to give design engineers added options for configuring control schemes for their machines.


Hydraulic valves from Sauer-Danfoss are designed for control systems of mobile equipment.

Two new hydraulic valves for the off-highway equipment industry are intended to give design engineers added options for configuring control schemes for their machines. PRV electro-proportional relief valve and PSV electro-proportional four-way directional control valve from Sauer-Danfoss Inc. offer smooth proportional functionality for hydraulic circuits.

Developed by engineers from Reggio Emilia, Italy, and Hillsboro, OR, to meet the needs of international manufacturers of aerial lift and material handling vehicles, both valves are suited for mobile equipment applications in turf care, road building, agriculture, construction, municipal, and other industries. Devices may be used in custom manifolds to create hydraulic integrated circuits (HICs) that offer less plumbing, easier installation, fewer leak points, and easier service than traditional valve systems. The new valves are Plus 1 compliant for integration into a customized electronic control system developed with the company’s Plus 1 software and hardware released in March.

The valves are said to help regulate precise load pressure, providing optimal machine performance and improved operator comfort and safety with smoother driving, lifting, and loading work functions. PRV valve controls pressure proportional to the valve input signal. Normally closed, it allows operator control over the pressure in a hydraulic system or control of pressure to a specific actuator, such as a hydraulic motor operating a fan to cool an engine. It comes in two sizes to fit industry standard cavities of 10-2 (flow capability 21 gpm or 80 lpm) and 12-2 (flow capability 50 gpm or 190 lpm).

PSV four-way, three-position valve controls output flow proportional to the valve electrical input. It gives the operator fine control of the direction and speed of a cylinder or motor. It fits industry standard cavity of 10-4 and is rated for flows from 0 to 22 lpm (5.7 gpm) and pressures to 250 bar (3,600 psi).

—Jeanine Katzel, senior editor, Control Engineering,

No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Make Big Data and Industrial Internet of Things work for you, 2017 Engineers' Choice Finalists, Avoid control design pitfalls, Managing IIoT processes
Engineering Leaders Under 40; System integration improving packaging operation; Process sensing; PID velocity; Cybersecurity and functional safety
Mobile HMI; PID tuning tips; Mechatronics; Intelligent project management; Cybersecurity in Russia; Engineering education; Road to IANA
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

SCADA at the junction, Managing risk through maintenance, Moving at the speed of data
Flexible offshore fire protection; Big Data's impact on operations; Bridging the skills gap; Identifying security risks
The digital oilfield: Utilizing Big Data can yield big savings; Virtualization a real solution; Tracking SIS performance
click me