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  Hydraulic pump cavitation is a destructive problem. It is the likely cause of symptoms such as excessive noise and power usage, pump damage, and pump failure. Although each of these symptoms can indicate other concerns, cavitation is one of the most problematic, as it can compromise your entire hydraulic system. It is the second leading cause of hydraulic pump failure behind hydraulic fluid contamination. For this reason, let's look at some causes of cavitation, how to recognize that it is occurring, as well as how to prevent damage and maintain the health of hydraulic systems. What is cavitation and what causes it? Cavitation occurs from the formation and resulting collapse of vapors within a hydraulic pump. Excessive vacuum conditions on the inlet (supply) side of a pump create vapor bubbles within the hydraulic fluid which then move to the discharge (pressure) side, at which point they collapse. The moment of collapse is when the cavitation damage occurs. Cavitation is especia...

Modern businesses often ignore face-to-face sales in favor of its little brother: inside sales. This is understandable given that an inside sales force can be 40% to 90% less expensive than an outside sales force. However, cheaper does not always mean better. If you're a B2B company, or any company selling a complex solution, nothing beats the personal touch of outside sales. This is particularly true in the liquid energy industry. The main differences between internal and external sales Think about it. How many sales emails do you ignore per day? Do you answer or give your full attention to every call you make? Mostly not. Unlike outside salespeople who work hard to achieve agreed-upon "face time" with customers, inside salespeople can be ignored. Outside sales teams create face-to-face interactions that lead to stronger customer relationships. In fact, 95% of people agree that face-to-face meetings are essential for long-term business relationships with Eaton hy...

  Malfunctioning Direct Control Valves (DCVs) can cause problems in your customer's hydraulic system. You can quickly fix some DCV problems when the hydraulics are online. This article provides information on 3 DCV-related issues that the end user should be aware of. There are many ways DCVs can reduce system performance. The most common are sticky/non-slip, internal leaks, and external leaks. Problem #1: sticks/doesn't convert Most DCV valves use a sliding spool/bore design. When the valve is stuck, the spool cannot change its positions when the actuator is using normal force. Various factors can cause this sticking, including contamination, sediment, mechanical failure, or actuator failure. Let's take a look at these common causes. radioactive contamination When solid particulate contamination occurs between the orifice and the spool, the normal amount of force required to move the spool increases beyond the limits of the actuator. The spool gets stuck and will not move u...