By Carl Dyke, Hydraulics Consultant at CD Industrial Group Inc. www.cdiginc.com “It’s a PRV … a pressure control valve … a pressure regulator.” That’s what I sometimes hear when discussing symbols on a hydraulic schematic, or even when examining components. The acronym PRV really drives me crazy because it could stand for pressure relief valve […]
Valves / Manifolds
What is a Hydraulic Valve?
Asking “what is a hydraulic valve?” is like asking “how long is a piece of string?” The variations available to the hydraulic designer are absolutely astounding, not only because of the myriad types of valves on the market, but also because of the numerous manufacturers making them. The most basic description of a valve is […]
Some thoughts on pressure reducing valves
When I was wet behind the ears in my hydraulic career, I was confused by the myriad pressure valves available to hydraulics. I came from a car wash background, where unloading valves are used to regulate the pressure of a piston pump. On the day in class where we discussed pressure valves, I had a […]
Danfoss releases new options for reverse displacement motor
Danfoss is pleased to expand on the Reverse Displacement Motor (RDM). The open circuit piston motor offers reverse circuit functionality without external valves — a hydraulic system product for mobile equipment applications. With wider product options, the RDM can be designed to meet individual needs of customers, increasing function and value. The RDM enables customers […]
Webtec launches new products at Hannover Messe 2015
Webtec announces a new range of hydraulic testers, hydraulic control valves and positive displacement flow meters to be launched at Hannover Messe 2015. NEW TESTER SERIES The DHM series of portable hydraulic testers will help service engineers create and send a certified certificate of up to 12 data sets of pressure, flow and temperature for […]
New two-stage AxisPro KBH servo-proportional valves from Eaton
Power management company Eaton announced the expansion of the AxisPro product line, now including a two-stage, D08 size design featuring valve position feedback on the pilot and main stage. The larger valve helps simplify machine control for demanding applications including injection and blow molding machines, large press applications, die casting, primary metals, test and simulation […]
Brennan Industries introduces manifold instrumentation valves
Brennan Industries, Inc., an international supplier of hydraulic fittings and adapters has expanded its line of instrumentation valves by introducing manifold valves. The new Brennan manifold valves will be offered in three valve configurations: Two Valve Manifolds, which are used in pressure instruments such as pressure gauges, pressure transmitters, pressure switches, etc. Three Valve Manifolds, […]
One valve, three functions
Comatrol, a global leader in the design, manufacture and sale of engineered hydraulic cartridge valves and hydraulic integrated circuits (HICs), today introduces the new SVP08-NCF solenoid valve. Recognizing the market need for single acting cylinder control with a focus on customization and flexibility, Comatrol developed this new solenoid with the intent to deliver three valve […]
The smart use of logic elements
By Darren Magner • Director of Marketing & Product Development • Comatrol Effective use of logic elements is key to designing cost-effective circuits, and is limited only by the imagination of the designer. Logic elements, often called differential sensing valves, are pressure control devices. Like directional control valves, a spring bias holds the spool in […]
What are hydraulic valves?
Hydraulic valves, in addition to the force density advantage of actuators, are what help make hydraulics unique in its control of force, torque and motion. Valves govern direction, pressure and flow of hydraulic fluid, enabling smooth, safe and controlled use of actuators. Every machine both requires and uses valves, varying vastly in execution from a […]
