Torque is the combination of tangential force acting at a distance from the axis of rotation. Proper torque is absolutely necessary if you want optimal performance from your valves. Proper torque prevents your cartridge valve from backing out under high pressures/high cycles, ensures proper operation of the valve's spool and prevents leakage. However, you must take caution when applying torque to a valve as over-zealous torque is one of the more common start-up or post-service issues (along with contamination, which was discussed in a previous post).
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Tags: cartridge valves, cartridge valve serviceability, hydraulic cartridge valves, proper installation of cartridge valves, handling of cartridge valves
Most of you reading this know the common benefits of hydraulic cartridge valves (click here for an excellent refresher). However, there are several key benefits routinely overlooked or misunderstood throughout the industry. HydraForce has dedicated significant efforts to innovation in cartridge valve technology — including the consolidation of multiple valve functions into a single cartridge, higher pressure and flow ratings, and improved machine control solutions. |
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Most of you reading this know the common benefits of hydraulic cartridge valves (click here for an excellent refresher). However, there are several key benefits routinely overlooked or misunderstood throughout the industry. HydraForce has dedicated significant efforts to innovation in cartridge valve technology — including the consolidation of multiple valve functions into a single cartridge, higher pressure and flow ratings, and improved machine control solutions.
Now, let’s talk about the benefits that go along with these improvements:
1. Performance
Traditionally, directional control functions were not considered a strong suit of cartridge valves. When searching online for a supplier of Directional Control Valves, a Google search will scarcely yield a "Cartridge Valve" return in the results. This has mostly to do with the limited flow capabilities of early cartridge valves. However, a lot has changed over the years, and today’s market could not be more ripe with Directional / Stack valve alternatives.
The bridge circuit below (named for its hydraulic similarities to the electronic "Wheatstone Bridge") has several key attributes which make it ideal for directional control. For starters, by having individual cartridge valves at the inlet of your A and B ports you get the distinct advantage of both meter-in and meter-out capabilities. Another advantage of this circuit is the ability to scale the appropriate cartridge valves for optimal flow. Other benefits include low-leakage poppet-type valving, lighter housing weight and the ability to achieve float or motor functions.
View/Download Directional Bridge Circuit graphic as:
PDF file (127 KB) | DXF file (201 KB)
HydraForce i-Design HF3D file (zipped 29 KB)
While we can’t deny there are inherent advantages of traditional directional stack valves, there are good reasons to consider this cartridge-valve alternative when designing your machine.
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Tags: proportional valves, benefits of cartridge valves, Directional Control Valves, cartridge valve serviceability, Directional Stack Valve Alternatives, Bridge Circuits
