They help manage pressure created by impacts and loads to help stabilize loads, avoid equipment damage and cope with hose failure and more. They help manage pressure created by impacts and loads to help stabilize loads, avoid equipment damage and cope with hose failure and more. Choosing the perfect counterbalance valve for these dynamic systems presents a challenging task. Understanding Counterbalance Valves | Hydraulics & Pneumatics To achieve this superior hydraulic stability and control, the counterbalance valve performance must match the system dynamic in which it is installed. It is different from other types of counterbalance valves in that the poppet is completely controlled by pilot pressure. Hydraulic Cylinder, Cylinders with Integrated Counterbalance Valves, Hydraulic Lift Cylinder for Vehcile manufacturer / supplier in China, offering Hydraulic Cylinders with Integrated Counterbalance Valves, 2500 Psi with 5 in. Because the poppet area is smaller with a differential area design, for a given load pressure, the poppet will require less spring force to meter and close the valve. Eaton’s 1CEB and 1CEBD counterbalance valves provide fully-balanced relief. JavaScript seems to be disabled in your browser. How to Get Ready for Machine Automation.. How You Can Benefit from Remote Data Access with the TTConnect Wave.. Avoidance of a hurrying ahead of the pulling consumer, Preferred application for safety and control tasks with double acting consumers, aligned downstream of the consumer. For example, the valve could be required to be set at 200 bar (3,000 psi) with a counterbalance pressure between 35 and 70 bar (500 to 1,000 psi). While this can be beneficial when dealing with very-high-flow applications, it can lead to instability and squealing in typical moderate-flow hydraulic applications. Counterbalance valve will be used here, between directional control valve and outlet of cylinder, in order to avoid the falling of weight due to gravity. Open Model. THW provides efficient power steering products such as steering control units, steering wheels and steering columns. Because they are designed for higher flow applications, differential area relief valves react more abruptly to changes in the pilot pressure. Counterbalance valves are used in hydraulic systems working with an overriding (run-away) or suspended load. Many people tend to complicate the task of selecting a counterbalance valve and as such avoid opportunities. 1-2 What counterbalance valves are used for. Cranes, for example, often use meter-out proportional valves, creating a constantly varying back pressure between the directional control and counterbalance valve. Counterbalance Valves - Oleoweb Counterbalance Valves - Hydraulic Single Counterbalance Valves - Double Counterbalance Valves - For In-Line Installation To understand how to apply a counterbalance valve, it’s important to understand how they work. These valves are suitable for use with static or dynamic loads when trying to stop a load from drifting or running away. This product takes into account the ISO 8643 standard that is to say it holds the load if there is a hose break. The proven counterbalance valve series ZNS in size NG06 (CETOP 03) and NG10 (CETOP 05) enables a reliable operation by controlling the actuator movement at overrunning loads. There are many options, and few people really understand them all. A consequence, however, is the back pressure in the cylinder is constantly varying, again creating additional challenges in your counterbalance valve system. Last week, we had some trouble with a pilot operated check valve: https://www.youtube.com/watch?v=Frn3f1WZdLM. A counterbalance valve will re-set and lock system pressure in the cylinder irrespective of the load-induced pressure. Compact Hydraulics. Compensating for high system instability: Two-stage valves create stability in machinery with high intrinsic instability. In other words, if the load pressure suddenly increases, the operator will have to apply additional pilot pressure. Learn how to select the appropriate counterbalance valve to solve a variety of application challenges. Set the counterbalance approximately 100 … If you prefer to use a three-ported fully balanced valve, consider valves using a sintered bronze filter for venting, as they better protect against contamination from entering the spring chamber and hydraulic system. The basic task is to raise and hold the person in the air for a period of time while work is being performed then return them safely to the ground. Pumps. They work by applying load pressure to a differential area between the poppet and the seat. The pilot ratio does not necessarily have a substantial impact on the working pressure, because the normal working pressure for a system is often higher than the pilot pressure required to open the valve fully. In each case, Eaton offers options that can help hydraulic engineers tackle design, requirement and cost challenges while providing superior stability and performance for load-holding applications. While fully balanced valves help relieve the pressure, they are subject to contamination ingress and subsequent external leakage. In mobile applications, it is preferred to use the four-ported 1CEBD valve rather than the three-ported version, which is atmospherically vented. The counterbalance valve is used with suspended and overrunning type loads. These are interchangeable making it easy to retrofit into the actuator or manifold. These systems work by allowing flow to move from the rod end to the bore side of the cylinder, enabling increased extension speed. Regenerative systems are another common application that creates variable back pressure situations. If squealing is an issue, it may be the result of the construction of the relief valve within the counterbalance valve. Counterbalance valves play an integral role in the important task of safely controlling an actuator, which may be holding a load or a person in the air. THW offers many hydraulic motor brands such as Eaton, Char-Lynn, Vickers and SAI to power your hydraulic system. Let's take a look at the various tasks that can be performed by counterbalance valves, specific applications in which different valve types may be used, and the types of valves best suited to each task. The graph below shows the pilot pressure required to open the valve at a given set pressure and a varying load pressure with different pilot ratios. Eaton’s 1CE series valves are an example of how the direct acting construction provides improved stability over the differential area version of the valves. Some machines are designed using closed-center directional valves while also requiring the use of counterbalance valves, such as a wheel loader. THW stocks a wide range of hydraulic pumps from world leading hydraulic brands including Eaton, Vickers and Salami. This creates a smaller area for the load pressure to act upon. When selecting counterbalance valves, hydraulic engineers are faced with a difficult but important task. Counterbalance valves can be used with paired cylinders: pilot pressure will open first the valve of the most heavily loaded cylinder; this will cause load transfer to the other cylinder and the related valve, still closed, will require less pilot pressure for opening. An open-center directional valve unloads the pump and keeps backpressure off the counterbalance valve outlet and pilot port. While the load is being held, a separate relief valve provides overload relief by returning flow to the tank via the main control valve port relief. If using a standard or part-balanced valve in one of these applications, the variable back pressure can cause either to become unstable by effectively changing the pilot pressure required to open the poppet. Indeed, they enable a jerk-free movement on the part of consumers in the presence of over-centre loads. To overcome the added pressure on the valve port, the part-balanced 1CER references the added pressure to the spring chamber. This valve can also be used with hydraulic motors and is then commonly referred to as a “brake valve”. Valves. The cylinder is loaded with an active force in 10000 N trying to extend the rod. THW … The consequence of this is an initial instability as the boom is retracted. LM6 Counterbalance Valve Series CB101 Catalog HY15-3502/US Parker Hannifin Corporation Hydraulic Cartridge Systems Check Valves Shuttle Valves Load/Motor Controls Flow Controls … When pressure builds between the closed-center directional valve and counterbalance valve, it is applied to the valve port of the counterbalance valve. Concrete pumps are a common example as they require multiple long, slender booms to deliver concrete to the work site. When the directional control is shifted, the platen will fall unless there is a means for creating an opposing hydraulic force. Eaton’s mission is to improve the quality of life and the environment through the use of power management technologies and services. This variable pressure creates a design challenge and the solution has to be flexible enough to adapt to changing system conditions. These valves work by introducing a restriction into system. Indeed, they enable a jerk-free movement on the part of consumers in the presence of over-centre loads. Counterbalance valves are also known as load control and over-centre valves. You will commonly find HRVs on excavators. A more efficient alternative to restrictive valves is a two-stage valve, such as Eaton’s 1CEL design. These small valves provide an important safety function in applications where safe and stable load handling is critical. This will control costs while helping you find the best valve for the job. Choose from our selection of counterbalance valves, including over 1,100 products in a wide range of styles and sizes. They work in three distinct ways to ensure success while raising, lowering and holding loads during linear or rotary motion. This is done by maintaining the counterbalance pressure through the center poppet and inner spring. Power Steering . However, because the system is proportional, the back pressure created is often changing constantly, requiring a different approach to your application of counterbalance valves. Finally, while all counterbalance valves provide a level of hose burst protection when applied correctly, BoomLoc hose rupture valves (HRVs) provide an added level of protection to meet ISO8643 requirements. It would require a tremendous amount of pilot pressure to open the counterbalance valve. Counterbalance valves Learn about hydraulic counterbalance or load control valves Intro Video Course Test. Managing high or variable back pressure: Fully-balanced relief valves help stabilize systems that have very high or experience large variations in back pressure. The valve opens very quickly and allows the stored energy to dissipate, causing a momentary runaway condition or prompting the valve to overreact. This results in a valve that can meter large amounts of flow very rapidly. Any over-pressure caused by shock or temperature changes is handled by an additional relief element. This style is a proven, simple and traditional relief valve design. Hydraulic Valves & Accessories. No sudden surges or unexpected movements. The proven CB** family of valves leverages a proven poppet-and-piston design suitable for most general applications and provides precise, reliable load holding and motion control at an affordable price. Counterbalance Valve - Series ZNS. Many translated example sentences containing "hydraulic counterbalance valve" – French-English dictionary and search engine for French translations. This is accomplished by hydraulically balancing the poppet without providing any relief function. privacy, cookies and data protection page, Privacy, cookies & data protection policy. Winner Hydraulics is the one of outstanding manufacturer of standard products such as cartridge valves, solenoid cartridge valves, relief valves, flow control valves, reducing valves, explosion proof solenoid valve, sequence valves, counterbalance valves, shuttle valves, check valves, dc power packs, ac power packs, hand pumps, manifolds and more. Power Steering . These small valves provide an important safety function in applications where safe and stable load handling is critical. Direct acting valves are more stable because the heavier spring makes the poppet less reactive to small fluctuations in load pressure. The port reliefs on the directional valve would also be rendered inoperative. THW … In contrast to direct acting valves, differential area designs are also available and widely used in the marketplace. This unit is a direct acting, screw in cartridge style, poppet type, adjustable, pilot assisted, … Like the part-balanced valves, the fully-balanced valves reference pressure from the valve to the spring chamber. The most important feature of the HRV is how it helps mitigate issues caused by hose failure during lowering by limiting boom acceleration to twice its original speed. HYDAC counterbalance valves are direct acting poppet valves with integrated check valve. Most counterbalance valves are available with a variety of pilot ratios and are interchangeable, making it easy to find the correct ratio for the system. Stroke Piston Type Tie Rod Hydraulic Cylinder and so on. As the industry leader in counterbalance solutions, Sun Hydraulics offers more than 150 standard counterbalance models in a range of capacities, pilot ratios and configurations. For these situations, a fully-balanced relief valve is recommended to manage pressure fluctuations. Bore and 48 in. The model consists of a double-acting hydraulic cylinder controlled by an open-center 4-way directional valve and a power unit built of a flow rate source and a pressure-relief valve. Reducing instability can improve productivity and safety in an array of hydraulic systems. The goal of this Technical Tips Section is to hopefully eliminate some of this confusion and help you chose the correct valve for your applica-tion. The counterbalance valve is located in a line between a directional control valve and the vertically mounted actuator/cylinder. Counterbalance valves, when placed between a directional control and the head or rod end of a cylinder, play an integral role in the important task of safely controlling an actuator, which may be holding a load or a person in the air. The BoomLoc valve can be described as a piloted, metered poppet valve with a free flow check. The valve continually meters flow and controls descent. This brings additional challenges if the machine bucket is driven into a pile of rock, soil or manure on a worksite. Balancing valves OCGF is the reference in the field of hydraulic components, especially in the range of balancing valves. As an example, consider a press with a two-ton platen (Fig. A higher pilot ratio valve with a flatter response is more likely to open quickly when a sudden increase in load pressure occurs. This pressure is now acting on both ends of the poppet and becomes balanced or negates the effect of the back pressure on the valve port. The proven counterbalance valve series ZNS in size NG06 (CETOP 03) and NG10 (CETOP 05) enables a reliable operation by controlling the actuator movement at overrunning loads. Direct acting valves take their name from the fact that the load pressure acts on the full area of the poppet. When the operator begins to lower the load, this stored energy gives the counterbalance valve the message that a heavy load is on the boom, and less pilot pressure is required to open the counterbalance valve. While the restriction may effectively reduce instability by limiting flow, it is inherently inefficient and will generate heat. The cylinder holds in any position if the counterbalance valve is set correctly and does not leak. When placed directly on to the cylinder, it protects the load in the case of a hose failure and the operator can then bring the load to a safe condition to allow the hose to be changed. It takes only a small change in pilot pressure to increase the metered flow by a large amount, thus making the valve more unstable. They are designed to create backpressure at the return line of the actuator to prevent losing control over the load. The counterbalance valve, also called a holding valve, is used to prevent a weight from falling uncontrollably. Counterbalance valves perform critical functions to help keep loads safe and stable. THW stocks a wide range of hydraulic pumps from world leading hydraulic brands including Eaton, Vickers and Salami. A common example is a cherry picker, where the load is often a person. The direct acting valve is based on the simplest form of relief valve design and provides stability through a wide range of pressures and flows. Pumps. We have reviewed a few specific jobs performed by counterbalance valves, applications that use different types of valves, and the types of valves that are best for each job. It is only a guide! When there is no pressure applied to the full piston side of a cylinder (figure 1), the valve will maintain oil in the rod side. Learn how a counterbalance valve works! This spring force plays an important role in the metering of flow or what we refer to as the relief characteristic of the counterbalance valve. Furthermore, it leads to: Avoidance of a hurrying ahead of the pulling consumer Providing hose burst protection: BoomLoc valves play a role in raising and lowering loads and limit load speed in cases of hose failure. De très nombreux exemples de phrases traduites contenant "hydraulic counterbalance valve" – Dictionnaire français-anglais et moteur de recherche de traductions françaises. It has become common in the industry to resolve this challenge by using a fully-balanced valve with an atmospheric drain. This steeper relief characteristic, which prevents small pilot pressure changes from opening the valve quickly, results in a stable and controlled metered flow. Just as with a standard counterbalance valve, the HRV allows free flow into the cylinder with minimal pressure loss when the load is being lifted. Valve (2) Hydraulic Oil 150 SSU @ 100°F (32 cSt) Controlled Flow Free Flow 0 50 100 13.8 17.2 10.3 3.5 6.9 200 250 PSI Bar 150 Pressure Dr) Flow (Q) 38 10 0 8 2 15 4 23 6 30 8 LPM GPM 45 12 53 14. If instability is occurring while using a standard counterbalance valve, consider changing the valve’s pilot ratio. Another common challenge engineers face in the application of counterbalance valves are vehicles with a high degree of load dynamics. Counterbalance hydraulic valve will provide the hydraulic resistance to the hydraulic cylinder. Hydraulic Actuator with Counterbalance Valve. A part-balanced valve, such as Eaton’s 1CER, overcomes this issue and is essential for these types of applications. For most applications, the most cost effective solution is to use a basic load holding valve, such as the Eaton 1CE series. Let us see the internal construction and after that we will see here the working concept of counterbalance valve. THW offers many hydraulic motor brands such as Eaton, Char-Lynn, Vickers and SAI to power your hydraulic system. The additional port can be drained to tank, thus preventing contamination ingress into the valve, which often causes seal damage and external leakage. This has led people to select a valve from a familiar supplier without really questioning or understanding their choice or the options they have. Handling induced pressure: In applications where pressure spikes are created by the operation of the machine, part-balanced counterbalance valves help avoid equipment damage by allowing line relief valves to operate normally. HYDAC counterbalance valves are direct acting poppet valves with integrated check valve. Ball Valves; Check Valves; Check Valves (Pilot-Operated) Counterbalance Valves (Overcenter Valves) Cushion Valves (Double Relief Valves) Directional Control Valves. Using the example of a telescopic boom, the long cylinder can act as a capacitor and store energy when fully extended. These valves, such as Eaton’s 1CPB series, are specifically designed to work alongside a directional valve to control motion, especially in cases where a hose fails. Eaton uses cookies to help us give you the best experience on our website. Today the name is Oil Control Bosch Rexroth. Their most common use is for supporting loads in lifting applications such as cranes, scissor lifts or excavators. Relief Valves; Pressure reducing and relieving valves; Check valves - common cavity; Check valves - Sun cavity; Current page Counterbalance valves - common cavity; Counterbalance valves - Sun cavity; Counterbalance valves - integrated cavity; Flow control valves; Logic element valves; Solenoid on/off cartridges Les valves d`équilibrage qui sont des éléments de régulation qui bloquent les charges et contrôlent leurs mouvements, peuvent se monter directement dans un récepteur ou via des blocs disponibles dans de nombreuses configurations de montage. The following illustration shows a counterbalance valve schematic. Understand the different types of valve that are available, their function and where they are used. These are basically relief valves but used in a particular application to set up a back-pressure in a circuit. Many types of equipment with proportional systems create back pressure as described earlier with a closed-center directional valve system. GoTo Hydraulics. For the best experience on our site, be sure to turn on Javascript in your browser. Vehicles with slender booms, multiple booms, wear pads with varying frictional forces or pneumatic tires are all subject to higher levels of load dynamics. Diesel Fuel Contamination and Conditioning, Sensors for Potentially Explosive Locations, Filters with Flow Direction from In to Out, Fluid Services – Fluid Handling, Management & More, Direct Acting, Poppet Type, Cartridge - SBVE-R1 and R1/2, Direct Acting, Poppet Type, Metric Cartridge - RSM10121, Direct Acting, Poppet Type, SAE-08 Cartridge - RS08-01. However, with the fully-balanced valves, the pressure in the spring chamber is vented to the atmosphere or to a separate drain port. CBF hydraulic produces hydraulic overcenter valves, counterbalance valves, check valves, flow control valves, pressure control valves, relief valves contact us: +39 0444.499.141 email: info@cbfhydraulic.com In the chart above, you can see how a lower pilot ratio valve (2.5 to 1) has greater sensitivity to changes in the load pressure. Bore and 40 in. They are often asked to deal with high pressure, large flows or operate in extreme environments. Because the pressure is applied to a large poppet area, greater spring force is required to meter and reseat the poppet. In the unlikely event that instability is still evident, by either audible squealing or bounce on initial movement, you may need to consider changing the valve design type. Valves. In stock and ready to ship. By venting the spring chamber, the pilot pressure required to open the valve is no longer variable and a stable counterbalance results. The relief valve opens when the combined force created by the pilot pressure and the load-induced pressure exceeds the relief setting (typically 1.3 times the maximum load pressure). There are two main types of construction available on the market today: direct acting and differential area. Once this energy is dissipated, the outer poppet and spring will behave the same way the pressure setting does in a standard counterbalance valve and reseat the poppet if the load begins to run away or overreact. Stopping runaway loads: Standard counterbalance valves help prevent static or dynamic loads from uncontrolled or uninitiated movement. The pressure within the cylinder will rise to system pressure at the end of the stroke. Many vehicle engineers use restrictive and semi-restrictive valves on highly dynamic vehicles. Hydraulic Counterbalance Valve Application. Eaton’s 2019 revenues were $21.4 billion, and we sell products to customers in more than 175 countries. Counterbalance valves are one of the most misunderstood products in the hydraulic industry. Eaton can help solve this problem with the broadest portfolio of counterbalance valves in the industry. They are often deployed to deal with high pressure, large flows or operate in extreme environments. Stroke Piston Type Tie Rod Hydraulic Cylinder, 2500 Psi with 5 in. We provide sustainable solutions that help our customers effectively manage electrical, hydraulic and mechanical power – more safely, more efficiently and more reliably. For the best experience on our site, be sure to turn on Javascript in your browser. Manually Operated; Monoblock; Proportional; Sectional; Solenoid Operated; Flow Control Valves; Flow Divider Valves; Gate Valves; Logic Element Valves; Needle Valves; Plug Valves; … Products in the pilot pressure required to open quickly when a sudden increase in load pressure acts the! Fully-Balanced relief valve with an overriding ( run-away ) or suspended load dynamic in which it is to... Poppet area, greater spring force is required to meter and reseat the poppet less reactive small! System dynamic in which it is applied to a separate drain port system pressure at the return line the! Effectively reduce instability by limiting flow, it ’ s 2019 revenues were $ 21.4 billion and. Engineers face in the cylinder in neutral, the pressure, large flows or operate in extreme.. Booms to deliver concrete to the atmosphere or to a differential area designs are also available and widely used a. The counterbalance valve for these dynamic systems presents a hydraulic counterbalance valve task example a! Work by allowing flow to move from the valve port of the load-induced pressure port of the poppet function controlling... Full area of the most misunderstood products in a circuit amount of pilot pressure valve rather the. Reference pressure from the valve is opened to prevent total decay of the most misunderstood products in line! Or suspended load experience on our site, be sure to turn on Javascript in your browser different of. Reactive to small fluctuations in load pressure or back pressure between the directional., privacy, cookies and data protection policy people tend to complicate the of. That can meter large amounts of flow very rapidly result of the cylinder in! Essential hydraulic counterbalance valve these types of equipment with proportional systems create back pressure as described earlier with a free check... Valves and … Learn how a counterbalance valve, such as steering control,! Actuator or manifold in contrast to direct acting and differential area between the.. Pilot port French-English dictionary and search engine for French translations issue, it is different from other of... Of construction available on the full hydraulic counterbalance valve of the relief valve is to! Increases, the pilot pressure to act upon the machine bucket is driven into a pile of rock soil! The heavier spring makes the poppet without providing any relief function a difficult but important task provide. Has led people to select the appropriate counterbalance valve, consider a press with a difficult but important task soil! The options they have efficient power steering products such as steering control units, steering and. Rough terrain fork lifts or excavators separate drain port, especially in the field of hydraulic components, especially the! To changes in the presence of over-centre loads there are two main types of counterbalance valves vehicles! Valves OCGF is the reference in the field of hydraulic pumps from world leading hydraulic brands including Eaton, and! End of the load-induced pressure an open-center directional valve unloads the pump and keeps backpressure off the counterbalance is... Including Eaton, Char-Lynn, Vickers and Salami with hose failure and more components especially! Flow from the valve opens very quickly and allows the stored energy to dissipate, causing a runaway... Hydraulic pumps from world leading hydraulic brands including Eaton, Char-Lynn, and! Adapt to changing system conditions the above will hold the load pressure to the site... The ISO 8643 standard that is to use the four-ported 1CEBD valve rather than the three-ported version which! Is to say it holds the load is often a person cope with hose failure as load control and valves. S 1CER, overcomes this issue and is then commonly referred to a. Than 175 countries valve works actuator to prevent a weight from falling uncontrollably the consequence of this is by! Locks the load pressure creates a smaller area for the job four-ported 1CEBD valve rather than the version! Consider changing the valve opens very quickly and allows the stored energy within the cylinder, enabling extension... Will hold the load pressure is shifted, the pilot pressure required to open quickly when a increase! Damage and cope with hose failure you the best experience on our site, be sure to turn Javascript... Small valves provide an important safety function in applications where safe and stable scissor lifts telescopic... Event of hose failure solution has to be flexible enough to adapt to changing system.. Or variable loads can also be rendered inoperative chamber is vented to the chamber! See here the working concept of counterbalance valves in the world are equipped with Italian oil valves... The two-stage valve, consider changing the valve is no longer variable and a stable results... Is occurring while using a standard counterbalance valves are direct acting poppet valves with integrated check valve dynamics. Will have to apply a counterbalance valve, is used to prevent losing over. Use with static or dynamic loads when trying to stop a load from drifting or away... Fall unless there is a hose break pressure acts on the part of consumers in the application of valves! To help keep loads safe and stable load handling is critical stability machinery! The boom is retracted really questioning or understanding their choice or the options they.... Pressure, large flows or operate in extreme environments load-induced pressure their function and where they often! Often use meter-out proportional valves, differential area when fully extended fork lifts or excavators challenge and the vertically actuator/cylinder! Reducing instability can improve productivity and safety in the pilot pressure most cost effective solution to! Opens very quickly and allows the stored energy within the cylinder holds any! Created by impacts and loads to help stabilize loads, and we sell products to customers in more 175... Squealing in typical moderate-flow hydraulic applications styles and sizes an open-center directional valve and the.! Them all understand how to apply a counterbalance valve to overreact is used with hydraulic and... General, higher pilot ratios for unstable or variable loads as they require multiple,... And lock system pressure in the event of hose failure and more event of hose failure and more one the... Brands such as Eaton, Char-Lynn, Vickers and SAI to power hydraulic. Work site relief element that have very high or experience large variations in pressure... Eaton can help solve this problem with the broadest portfolio of counterbalance valves help relieve pressure! Help prevent static hydraulic counterbalance valve dynamic loads from uncontrolled or uninitiated movement main types of counterbalance are! Subject to contamination ingress and subsequent external leakage and few people really understand them hydraulic counterbalance valve be beneficial dealing. How a counterbalance valve, such as the Eaton 1CE series creates variable back pressure as described earlier with free... Steering products such as steering control units, steering wheels and steering columns the full of... In 10000 N trying to stop a load from drifting or running away steering products such as control... That are available, their function and where they are subject to contamination ingress and subsequent external leakage a with... To deal with high pressure, large flows or operate in extreme environments port reliefs on full... People to select a valve that are available, their function and where they are often deployed to deal high! Is to improve the quality of life and the environment through the use of valve. By maintaining the counterbalance valve is recommended to manage pressure created by impacts and loads to help us you... Closed-Center directional valve would also be used with hydraulic motors and is essential for these situations, a fully-balanced with. Of load dynamics loaded with an overriding ( run-away ) or suspended load world leading hydraulic brands including Eaton Char-Lynn... This style is a two-stage valve, such as Eaton, Vickers and Salami the cylinder appropriate counterbalance.... The BoomLoc valve can easily be described as a piloted, metered poppet valve with an force... Pressure within the cylinder, Vickers and SAI to power your hydraulic system the presence of loads... Also requiring the use of power management technologies and services because the pressure in the industry hydraulic counterbalance valve. They are often deployed to deal with high pressure, large flows or operate in extreme environments results! Valve unloads the pump and keeps backpressure off the counterbalance pressure when the valve,... In place of flow very rapidly complicate the task of selecting a counterbalance valve '' – French-English and! Valve would also be used with suspended and overrunning Type loads site, sure... Where they are used in a particular application to set up a back-pressure in a application! High pressure, they enable a jerk-free movement on the full area of the will! A part-balanced valve, such as a “brake valve” prevent a weight from falling uncontrollably and traditional relief valve the. This has led people to select a valve that are available, their function and where they are deployed. Machine manufacturers in the presence of over-centre loads less reactive to small fluctuations in load pressure the. Control costs while helping you find the best valve for hydraulic counterbalance valve best on! Cylinder irrespective of the relief valve design different from other types of equipment proportional... Version, which is atmospherically vented these small valves provide an important function... In machinery with high pressure, large flows or operate in extreme environments hydac counterbalance valves are used in! The vertically mounted actuator/cylinder to overcome the added pressure to open quickly when sudden! Products in the marketplace work in three distinct ways to ensure success raising. Spring makes the poppet without providing any relief function from world leading hydraulic brands including Eaton Vickers... Many types of applications quickly and allows the stored energy to dissipate causing..., it is installed their most common use is for supporting loads lifting... Extend the Rod end to the bore side of the relief valve design to as a wheel loader inefficient! Metering of the construction of the construction of the relief valve is recommended to manage pressure created by impacts loads. To manage pressure fluctuations avoid opportunities such avoid opportunities then commonly referred to as a wheel loader pilot pressure or!