Hydraulics & Pneumatics - Hydraulics & Pneumatics is the leading international technical resource for fluid power http://hydraulicspneumatics.com/rss.xml en Contamination Control: Are You A Victim Or A Volunteer? http://hydraulicspneumatics.com/blog/contamination-control-are-you-victim-or-volunteer <div class="node-body blog-body">Contamination control is not a silver bullet for hydraulic equipment reliability. These days, best-practice contamination control is more like an accepted precondition for reliability. And given contemporary advances in technology for excluding and removing contaminants, it could be said that failure to control contamination is a failure of machine design, rather than a failure of maintenance</div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div><p><a href="http://hydraulicspneumatics.com/blog/contamination-control-are-you-victim-or-volunteer" target="_blank">read more</a></p> http://hydraulicspneumatics.com/blog/contamination-control-are-you-victim-or-volunteer#comments Hydraulics At Work Mon, 31 Aug 2015 22:33:00 +0000 33951 at http://hydraulicspneumatics.com The Basics of Multi-Passage Soft-Seal Rotating Unions http://hydraulicspneumatics.com/fittings-couplings/basics-multi-passage-soft-seal-rotating-unions <div class="field-deck"> Sponsored by Deublin </div> <div class="node-body article-body">Farming combines, drilling rigs, tool manufacturing, converting, packaging and steel mills are just a few examples that employ multi-passage soft-seal rotary unions. These types of unions or couplings allow the transfer of...</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/fittings-couplings/basics-multi-passage-soft-seal-rotating-unions" target="_blank">read more</a></p> http://hydraulicspneumatics.com/fittings-couplings/basics-multi-passage-soft-seal-rotating-unions#comments Basics of Design Fittings & Couplings Seals Mon, 31 Aug 2015 14:33:00 +0000 33901 at http://hydraulicspneumatics.com Getting Ready for Innovation at ICUEE 2015 http://hydraulicspneumatics.com/events/getting-ready-innovation-icuee-2015 <div class="node-body article-body"><p>As fall approaches, many of us are making plans to travel to conferences and trade shows. As in every other odd-numbered year, 2015 will mark the return of the International Construction &amp; Utility Equipment Expo to Louisville, Ky., Sept. 29 through Oct. 1. Known as ICUEE&mdash;IQ for short&mdash;this show immediately became one of my favorites when I first attended more than 20 years ago. It&rsquo;s organized by the Association of Equipment Manufacturers (AEM), the same group that puts on ConExpo/ConAgg and IFPE.</p></div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/events/getting-ready-innovation-icuee-2015" target="_blank">read more</a></p> http://hydraulicspneumatics.com/events/getting-ready-innovation-icuee-2015#comments Events Thu, 27 Aug 2015 18:11:00 +0000 33921 at http://hydraulicspneumatics.com Our Editors http://hydraulicspneumatics.com/our-editors <div class="node-body page-body">Hydraulics & Pneumatics' editorial staff consists of full-time staff and contributing experts.</div><div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/our-editors" target="_blank">read more</a></p> Thu, 27 Aug 2015 15:07:59 +0000 33911 at http://hydraulicspneumatics.com Preventive Maintenance is a Wise Investment http://hydraulicspneumatics.com/design-faqs/preventive-maintenance-wise-investment <div class="field-deck"> Sponsored by Hawe Hydraulik </div> <div class="node-body article-body">Lack of proper maintenance is the leading cause of hydraulic component and system failure. However, practicing preventive maintenance (PM) can reduce machine downtime and increase...</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/design-faqs/preventive-maintenance-wise-investment" target="_blank">read more</a></p> http://hydraulicspneumatics.com/design-faqs/preventive-maintenance-wise-investment#comments Design FAQs Maintenance Hydraulics Tue, 25 Aug 2015 18:27:00 +0000 33841 at http://hydraulicspneumatics.com Hydraulics 101: The Importance Of The Unimportant Detail http://hydraulicspneumatics.com/blog/hydraulics-101-importance-unimportant-detail <div class="node-body blog-body">Details matter in hydraulics. A lot. Take a deceptively simple task like topping off the hydraulic tank. There's one right way to do it, and 101 ways to screw it up. </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div><p><a href="http://hydraulicspneumatics.com/blog/hydraulics-101-importance-unimportant-detail" target="_blank">read more</a></p> http://hydraulicspneumatics.com/blog/hydraulics-101-importance-unimportant-detail#comments Hydraulics At Work Tue, 25 Aug 2015 05:56:00 +0000 33881 at http://hydraulicspneumatics.com Bulk Modulus for Dummies http://hydraulicspneumatics.com/blog/bulk-modulus-dummies <div class="node-body blog-body"><p>I was in high school when Vincent Magorien wrote what I consider to be the definitive treatise on bulk modulus. That was way back in 1969. But like gravity, bulk modulus is one of those fundamentals that has not and will not change &mdash; except maybe in science fiction.</p></div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hitch-post">The Hitch Post</a></li> </ul></div><p><a href="http://hydraulicspneumatics.com/blog/bulk-modulus-dummies" target="_blank">read more</a></p> http://hydraulicspneumatics.com/blog/bulk-modulus-dummies#comments Hydraulic Fluids The Hitch Post Fri, 21 Aug 2015 19:35:00 +0000 33871 at http://hydraulicspneumatics.com Pneumatic System Designers: Don't Overlook Critical Backpressure http://hydraulicspneumatics.com/blog/pneumatic-system-designers-dont-overlook-critical-backpressure <div class="node-body blog-body"><p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/uploads/2015/08/backpressure.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/uploads/2015/08/backpressure.jpg" style="width: 300px; height: 169px; float: right; margin-left: 4px; margin-right: 4px;" /></a>Lately, I&#39;ve noticed magazine editors who dub themselves as &quot;experts&quot; in the field of fluid power. I know I know more about fluid power than these people, but I certainly do not consider myself an expert.</p></div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/fluid-power-talk">Fluid Power Talk</a></li> </ul></div><p><a href="http://hydraulicspneumatics.com/blog/pneumatic-system-designers-dont-overlook-critical-backpressure" target="_blank">read more</a></p> http://hydraulicspneumatics.com/blog/pneumatic-system-designers-dont-overlook-critical-backpressure#comments Cylinders & Actuators Fluid Power Talk Fri, 21 Aug 2015 01:36:00 +0000 33861 at http://hydraulicspneumatics.com Hydraulics & Pneumatics Products of the Week (8/20-8/27) http://hydraulicspneumatics.com/hydraulic-valves/hydraulics-pneumatics-products-week-820-827 <div class="node-body gallery-body"><p>Check out five products for fluid-power&nbsp;applications, ranging from check, flow-control, and needle valves, to axial-piston variable hydraulic motors.&nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-valves/hydraulics-pneumatics-products-week-820-827#comments Products Technologies Hydraulic Valves Pneumatic Valves Thu, 20 Aug 2015 20:48:00 +0000 33851 at http://hydraulicspneumatics.com 6 Reasons to Validate Your Lockout/Tagout Procedure http://hydraulicspneumatics.com/maintenance/6-reasons-validate-your-lockouttagout-procedure <div class="node-body article-body">When devising a Lockout/Tagout program, it is better to be safe than sorry.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/maintenance/6-reasons-validate-your-lockouttagout-procedure" target="_blank">read more</a></p> http://hydraulicspneumatics.com/maintenance/6-reasons-validate-your-lockouttagout-procedure#comments Maintenance Learning Resources Wed, 19 Aug 2015 14:15:00 +0000 33831 at http://hydraulicspneumatics.com Photo courtesy of Thinkstock August 2015 http://hydraulicspneumatics.com/hydraulics-pneumatics/2015-08-17 <div class="node-body magazine_issue-body"></div> <fieldset class="fieldgroup group-mag-teasers"> <div class="field-mag-teaser"> <a href="/cylinders-actuators/pushing-cheese-production">Pushing Cheese Production</a> <a href="/maintenance/cavitation-or-aeration-you-can-hear-difference">Cavitation or Aeration? You Can Hear the Difference!</a> <a href="/packaging/pack-your-bags-pack-expo-2015">Pack Your Bags for Pack Expo 2015</a> </div> </fieldset> <fieldset class="fieldgroup group-publication-info"><legend>Publication Info</legend> </fieldset> <div class="og_rss_groups"></div> Mon, 17 Aug 2015 04:00:00 +0000 33891 at http://hydraulicspneumatics.com How To Configure Hydraulic Conductors For Noise Reduction http://hydraulicspneumatics.com/blog/how-configure-hydraulic-conductors-noise-reduction <div class="node-body blog-body">Although long lengths of hose can reduce structure borne noise, hose is actually an efficient radiator in the frequency range where most of the energy is generated, typically around 600, 900 and 1200 Hertz.</div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div><p><a href="http://hydraulicspneumatics.com/blog/how-configure-hydraulic-conductors-noise-reduction" target="_blank">read more</a></p> http://hydraulicspneumatics.com/blog/how-configure-hydraulic-conductors-noise-reduction#comments Hydraulics At Work Mon, 17 Aug 2015 00:03:00 +0000 33821 at http://hydraulicspneumatics.com How To Flush A Hydraulic System Effectively http://hydraulicspneumatics.com/blog/how-flush-hydraulic-system-effectively <div class="node-body blog-body">The objective of flushing a hydraulic system is to eliminate sludge, varnish, debris and contaminated or degraded fluid from conductor walls and other internal surfaces and system dead spots. Reasons for performing a system flush include...</div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div><p><a href="http://hydraulicspneumatics.com/blog/how-flush-hydraulic-system-effectively" target="_blank">read more</a></p> http://hydraulicspneumatics.com/blog/how-flush-hydraulic-system-effectively#comments Hydraulics At Work Mon, 10 Aug 2015 22:48:00 +0000 33771 at http://hydraulicspneumatics.com 5 Features for Safe Hydraulic Drives http://hydraulicspneumatics.com/hydraulic-pumps-motors/5-features-safe-hydraulic-drives <div class="node-body article-body">Five factors should be considered in order to design a safe, compact, and efficient hydraulic drive, especially considering today's advanced hydraulic drives that allow machines to reach high speeds in the most arduous conditions, </div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/5-features-safe-hydraulic-drives" target="_blank">read more</a></p> http://hydraulicspneumatics.com/hydraulic-pumps-motors/5-features-safe-hydraulic-drives#comments Hydraulic Pumps & Motors Fri, 07 Aug 2015 16:53:00 +0000 33751 at http://hydraulicspneumatics.com Gentle Giant Transports Molten Steel http://hydraulicspneumatics.com/rail-truck-bus/gentle-giant-transports-molten-steel <div class="node-body article-body">The 3503 ladle carrier has a payload of 180 tons and is nearly 16 meters long. The ladle, placed in the transporter’s payload platform, can be hydraulically lowered onto the ground for crane loading.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/rail-truck-bus/gentle-giant-transports-molten-steel" target="_blank">read more</a></p> http://hydraulicspneumatics.com/rail-truck-bus/gentle-giant-transports-molten-steel#comments Other Industries Rail, Truck & Bus Fri, 07 Aug 2015 16:10:00 +0000 33731 at http://hydraulicspneumatics.com Pushing Cheese Production http://hydraulicspneumatics.com/cylinders-actuators/pushing-cheese-production <div class="field-byline"> James Coshnitzke, Clippard Instrument Laboratory Inc. </div> <div class="field-deck"> A major food manufacturer looks to streamline an operation that moves trays through the fill-and-weigh operations, then to the unloading station. </div> <div class="node-body article-body">The cheese in colorful packages at supermarkets usually starts out in a completely different form. In one such case, machines pour a heated, liquefied cheese product into large fiberglass trays.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/cylinders-actuators/pushing-cheese-production" target="_blank">read more</a></p> http://hydraulicspneumatics.com/cylinders-actuators/pushing-cheese-production#comments Food & Beverage Cylinders & Actuators Packaging Pneumatic Valves Fri, 07 Aug 2015 14:39:00 +0000 33711 at http://hydraulicspneumatics.com Free In-Person Seminar Covers Hydraulic System Modeling http://hydraulicspneumatics.com/hydraulic-valves/free-person-seminar-covers-hydraulic-system-modeling <div class="node-body article-body"><p>Would you like to gain a deeper understanding of the physics that govern hydraulic systems, and how to use software to model hydraulic resistance, capacitance, and inductance? How about stability, linearization, frequency response, dynamic modes, and other concepts related to hydraulic systems?</p></div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/hydraulic-valves/free-person-seminar-covers-hydraulic-system-modeling" target="_blank">read more</a></p> http://hydraulicspneumatics.com/hydraulic-valves/free-person-seminar-covers-hydraulic-system-modeling#comments Hydraulic Valves News Thu, 06 Aug 2015 14:45:00 +0000 33701 at http://hydraulicspneumatics.com Software Filters Out Filters to Identify the Best Fit http://hydraulicspneumatics.com/hydraulic-filters/software-filters-out-filters-identify-best-fit <div class="node-body article-body">Software helps users pick the best hydraulic filter and fluid for their application needs.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/hydraulic-filters/software-filters-out-filters-identify-best-fit" target="_blank">read more</a></p> http://hydraulicspneumatics.com/hydraulic-filters/software-filters-out-filters-identify-best-fit#comments Hydraulic Filters Hydraulic Fluids News Wed, 05 Aug 2015 19:28:00 +0000 33691 at http://hydraulicspneumatics.com High-Speed Cylinders Get a Soft Landing http://hydraulicspneumatics.com/cylinders-actuators/high-speed-cylinders-get-soft-landing <div class="field-byline"> John Bridges </div> <div class="field-deck"> Engineers have several options when selecting the best way to cushion pneumatic cylinders. </div> <div class="node-body article-body">Engineers have several options when selecting the best way to cushion pneumatic cylinders.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/cylinders-actuators/high-speed-cylinders-get-soft-landing" target="_blank">read more</a></p> http://hydraulicspneumatics.com/cylinders-actuators/high-speed-cylinders-get-soft-landing#comments Cylinders & Actuators Tue, 04 Aug 2015 17:01:00 +0000 33671 at http://hydraulicspneumatics.com High-Speed Cylinders Get a Soft Landing (.PDF Download) http://hydraulicspneumatics.com/datasheet/high-speed-cylinders-get-soft-landing-pdf-download <div class="node-body datasheet-body"><p>Productivity, energy efficiency, and long service life are three key requirements when specifying pneumatic components for automation systems. Cushioning is one (perhaps underappreciated) way to improve overall...</p> <p><strong>Register or sign in below to download the full article in .PDF format, including high resolution graphics and schematics when applicable.</strong></p> </div> <div class="og_rss_groups"></div> Gold Tue, 04 Aug 2015 16:27:00 +0000 33681 at http://hydraulicspneumatics.com Cavitation or Aeration? You Can Hear the Difference! http://hydraulicspneumatics.com/maintenance/cavitation-or-aeration-you-can-hear-difference <div class="field-byline"> Jack Weeks </div> <div class="field-deck"> Many maintenance technicians confuse cavitation and aeration. Although the two conditions have similar symptoms, their causes are entirely different. </div> <div class="node-body article-body">Many maintenance technicians confuse cavitation and aeration. Although the two conditions have similar symptoms, their causes are entirely different.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/maintenance/cavitation-or-aeration-you-can-hear-difference" target="_blank">read more</a></p> http://hydraulicspneumatics.com/maintenance/cavitation-or-aeration-you-can-hear-difference#comments Maintenance Tue, 04 Aug 2015 15:42:00 +0000 33641 at http://hydraulicspneumatics.com Cavitation or Aeration? You Can Hear the Difference! (.PDF Download) http://hydraulicspneumatics.com/datasheet/cavitation-or-aeration-you-can-hear-difference-pdf-download <div class="node-body datasheet-body"><p>Cavitation is the formation and collapse of air cavities in liquid. When hydraulic fluid is pumped from a reservoir, pressure drops in the suction line to the pump. Despite what many people believe, the fluid is not...</p> <p><strong>Register or sign in below to download the full article in .PDF format, including high resolution graphics and schematics when applicable.</strong></p> </div> <div class="og_rss_groups"></div> Gold Tue, 04 Aug 2015 14:37:00 +0000 33661 at http://hydraulicspneumatics.com YOUR Hydraulics Education: Upfront Now OR At The Repair Shop Later? http://hydraulicspneumatics.com/blog/your-hydraulics-education-upfront-now-or-repair-shop-later <div class="node-body blog-body">A couple of questions I received from readers in the last week got me thinking about how people divide into two groups when it comes to information: those who are willing to pay for it, and those who are not...</div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div><p><a href="http://hydraulicspneumatics.com/blog/your-hydraulics-education-upfront-now-or-repair-shop-later" target="_blank">read more</a></p> http://hydraulicspneumatics.com/blog/your-hydraulics-education-upfront-now-or-repair-shop-later#comments Hydraulics At Work Mon, 03 Aug 2015 22:12:00 +0000 33651 at http://hydraulicspneumatics.com Custom Feedback Solves Real Problems http://hydraulicspneumatics.com/controls-instrumentation/custom-feedback-solves-real-problems <div class="field-deck"> Programmable custom feedback improves the quality of input signals from sensors, as well as protects control-loop algorithms from unwanted feedback and sensor failures. </div> <div class="node-body article-body">Programmable custom feedback improves the quality of input signals from sensors, as well as protects control-loop algorithms from unwanted feedback and sensor failures.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/controls-instrumentation/custom-feedback-solves-real-problems" target="_blank">read more</a></p> http://hydraulicspneumatics.com/controls-instrumentation/custom-feedback-solves-real-problems#comments Controls & Instrumentation Cylinders & Actuators Hydraulic Pumps & Motors Mon, 03 Aug 2015 18:41:00 +0000 33621 at http://hydraulicspneumatics.com Pack Your Bags for Pack Expo 2015 http://hydraulicspneumatics.com/packaging/pack-your-bags-pack-expo-2015 <div class="field-deck"> As it does every other year, Pack Expo heads for Las Vegas, where it will be welcoming thousands of visitors September 28 to 30. </div> <div class="node-body article-body">Pack Expo Las Vegas, here we come! The 2015 show, which runs from September 28 to 30, will take place at the Las Vegas Convention Center. Attendees can gain insights about innovations...</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/packaging/pack-your-bags-pack-expo-2015" target="_blank">read more</a></p> http://hydraulicspneumatics.com/packaging/pack-your-bags-pack-expo-2015#comments Other Technologies Packaging Seals Vacuum Technology Events Community Sat, 01 Aug 2015 17:38:00 +0000 33601 at http://hydraulicspneumatics.com Hydraulic-Electric Analogies: DC Motors, Part 5 http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-dc-motors-part-5 <div class="field-deck"> The analogous nature of hydraulic systems and their electrical counterparts can be compared and contrasted by examining motors and power conversion. </div> <div class="node-body article-body">The analogous nature of hydraulic systems and their electrical counterparts can be compared and contrasted by examining motors and power conversion.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-dc-motors-part-5" target="_blank">read more</a></p> http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-dc-motors-part-5#comments Hydraulic Pumps & Motors Fri, 31 Jul 2015 19:25:00 +0000 33571 at http://hydraulicspneumatics.com 10 Essential Pneumatic Safety Products http://hydraulicspneumatics.com/hydraulic-valves/10-essential-pneumatic-safety-products <div class="node-body gallery-body">These air safety products, from actuators to valves, help avoid high-pressure hazards and uncontrolled movements.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/hydraulic-valves/10-essential-pneumatic-safety-products" target="_blank">read more</a></p> http://hydraulicspneumatics.com/hydraulic-valves/10-essential-pneumatic-safety-products#comments Controls & Instrumentation Hydraulic Valves Fri, 31 Jul 2015 17:55:00 +0000 33561 at http://hydraulicspneumatics.com Hydraulic Door Swings into Action http://hydraulicspneumatics.com/cylinders-actuators/hydraulic-door-swings-action <div class="node-body article-body">Hydroswing doors are used as an alternative to bottom-rolling, accordion, fabric, and sliding doors, which typically contain many moving parts and often require increased maintenance over time.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/cylinders-actuators/hydraulic-door-swings-action" target="_blank">read more</a></p> http://hydraulicspneumatics.com/cylinders-actuators/hydraulic-door-swings-action#comments Cylinders & Actuators News Tue, 28 Jul 2015 17:39:00 +0000 33551 at http://hydraulicspneumatics.com Getting Out of a Pickle with Vacuum Technology http://hydraulicspneumatics.com/vacuum-technology/getting-out-pickle-vacuum-technology <div class="field-deck"> With more than 10,000 jars of pickles being processed every hour, Develey Senf & Feinkost GmbH turned to vacuum power for a new way to palletize the jars. </div> <div class="node-body article-body">With the large turnover at Pfarrkirchen, moving pickle jars becomes arduous work for Develey employees.</div> <div class="og_rss_groups"></div><p><a href="http://hydraulicspneumatics.com/vacuum-technology/getting-out-pickle-vacuum-technology" target="_blank">read more</a></p> http://hydraulicspneumatics.com/vacuum-technology/getting-out-pickle-vacuum-technology#comments Vacuum Technology Tue, 28 Jul 2015 16:39:00 +0000 33541 at http://hydraulicspneumatics.com 2 Reasons NOT To Be Cheap When Buying Hydraulic Filters http://hydraulicspneumatics.com/blog/2-reasons-not-be-cheap-when-buying-hydraulic-filters <div class="node-body blog-body">Having the right filters in the right places is essential to the success of the contamination control effort. But it can be easily compromised by buying filters on price alone. Like any other aftermarket or non-genuine part, replacement filter elements vary in both quality and price. And there are two potential risks with installing 'will fit' filter elements.</div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div><p><a href="http://hydraulicspneumatics.com/blog/2-reasons-not-be-cheap-when-buying-hydraulic-filters" target="_blank">read more</a></p> http://hydraulicspneumatics.com/blog/2-reasons-not-be-cheap-when-buying-hydraulic-filters#comments Hydraulics At Work Mon, 27 Jul 2015 22:47:00 +0000 33531 at http://hydraulicspneumatics.com