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Engineering Basics

What is pressure compensation in a hydraulic system?

April 7, 2022 By Mary Gannon

Pressure compensated flow controls

By Josh Cosford, Contributing Editor Pressure compensated pumps, pressure compensated flow controls or even just straight-up pressure compensators – these terms are thrown around constantly. But unless you’re a hydraulic specialist, you may not know what these are, let alone what they do. Of course, you’ve probably heard of systems analysts and cartographers too, but […]

Filed Under: Components, Engineering Basics, Featured, Valves / Manifolds

How do hydraulic clutches work?

March 10, 2022 By Mary Gannon

Hydraulic actuated clutch from Witchita Clutch

By Josh Cosford, Contributing Editor A clutch is a mechanical device that disconnects a driveshaft from its input shaft, pausing output torque. Clutches — hydraulic or otherwise — often use friction to engage the input and output ends of the assembly. The friction material is not unlike the compound employed by vehicles for their brake […]

Filed Under: Components, Engineering Basics, Featured

What type of pressure valve do I need?

February 2, 2022 By Mary Gannon

featured-Figure-1 Pressure Valves Basic-Four-Rev-1

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. […]

Filed Under: Components, Engineering Basics, Featured, Valves / Manifolds

How do you select hydraulic pumps?

January 13, 2022 By Mary Gannon

How To Select Hydraulic Pumps low res

By Josh Cosford, Contributing Editor Hydraulic pumps convert mechanical energy into hydraulic energy, and it goes without saying every hydraulic system requires such a device to transmit controlled force to the actuators of your hydraulic machine. How you select a pump comes down to many factors but working through this guide will help you select […]

Filed Under: Components, Engineering Basics, Pumps / Motors

How do directional seated valves operate?

December 1, 2021 By Mary Gannon

Figure-2---Poppet-Cutaway

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, […]

Filed Under: Components, Engineering Basics, Featured, Valves / Manifolds

When can you use manual hydraulic valves?

November 18, 2021 By Mary Gannon

doering valve

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 […]

Filed Under: Components, Engineering Basics, Valves / Manifolds

How are ball valves used to ensure hydraulic safety?

November 10, 2021 By Mary Gannon

LV2BS_photo_b0d4a9ec-37a5-4450-814a-92fd4e9e37d8_400x-hydraulic-ball-valves

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 […]

Filed Under: Components, Engineering Basics, Featured, Valves / Manifolds

When should you use check valves?

September 14, 2021 By Mary Gannon

Sun Hydraulics check valves feature high flow capacity relative to their small physical size. Sun’s check valves are available with flow capacities up to 160 gpm (600 L/min.) and capable of operating at pressures up to 5000 psi (350 bar).

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 […]

Filed Under: Components, Engineering Basics, Featured, Valves / Manifolds

When should you use cartridge valves?

August 4, 2021 By Mary Gannon

Hydac pressure-sensing compensator valve DW06V

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 […]

Filed Under: Components, Engineering Basics, Featured, Valves / Manifolds

How do linear transducers work?

July 23, 2021 By Mary Gannon

Ametek linear displacement transducer

By Josh Coford, Contributing Editor Temperature, pressure, and displacement are typical transducer offerings. A linear displacement transducer measures linear position or distance, especially when high accuracy is needed. Linear transducers work using a principle called magnetostriction. A typical transducer uses three major components; the sensor assembly, a waveguide and a permanent magnet. The sensor assembly […]

Filed Under: Components, Engineering Basics, Featured, Sensors / Gages

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