Two check valve cracking pressures are available. Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit. A three-port, atmospherically vented version (CA**) is available for retrofit into three-port cavities where unexpected back pressure has created a problem. You agree to our use of cookies by closing this message box or continuing to use our site. Both counterbalance valves and pilot-operated check valves can be used to lock fluid in a cylinder to prevent drifting. 73 KB pdf. Note that our standard counterbalance valves are non-vented. Page 1 of 2. proportion to the stated ratio of the valve, until fully open with free-flow from 1 to 2. Back. Counterbalance valves. depend on Sun Hydraulics to make our machines safer and more efficient. The LoadMatch family offers the best solution for many load-holding applications with the following operating requirements: LoadMatch Products | LoadMatch Article | LoadMatch Video. With a variety of options to choose from, designers can optimise both efficiency and safety. 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. For further assistance or guidance in selecting the best counterbalance valve for your application, please contact your local distributor.Download a PDF of this article here. Vented counterbalance valves are useful in: Our family of M-valve Load-Reactive Load Control valves offers improved modulation performance. 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. SunSource is one of North America's leading fluid power distribution companies, providing products, services and information in hydraulics, pneumatics, filtration, automation systems, and related industrial components, serving both the industrial and mobile equipment markets. A three-port, atmospherically vented version (CA**) is available for retrofit into three-port cavities where unexpected back pressure has created a problem. Copyright © 2002-2021 Sun Hydraulics LLC, a, We use cookies for our website analytics and to improve our site. Sort By: … Counterbalance valves with pilot assist are meant to control an overrunning load. CP441-1 Counterbalance Valve Twitter . Learn how hydraulic counterbalance valves work. The MB and MW families are useful in challenging applications when: Sun's patented LoadMatch™ family offers M-valve performance with an energy-saving self-setting control. Two check valve cracking pressures are available. Operation . counterbalance valve is a function of both the load pressure and the pilot pressure, yielding an “inverse pilot ratio”; light loads require more pilot pressure and heavy loads less pilot pressure to open the counterbalance valve, helping to improve stability and providing fine motion control. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern. Counterbalance Valves Single Counterbalance Valve 3/8" In Line - 100-350Bar - Ext Pilot. Maximum pressure capabilities up to 420 bar with flow capacities starting from 15 l / min. The check valve allows free flow from the directional valve (port 2) to the load (port 1) while a direct-acting, pilot-assisted relief valve controls flow from port 1 to port 2. Pilot ratios range from as low as 1.5:1 up to 10:1. View Range Here. Counterbalance valves are used with cylinders to safely hold suspended loads and deal with over-running loads. With such a variety of options to choose from, designers can optimise both efficiency and safety. This means that you no longer have to compromise between stability (low pilot ratio) and efficiency (high pilot ratio). PDF created on … the best valve for your application. This new family of patent-pending LoadAdaptive™ counterbalance valves is an evolution of our industry-proven CB** family of valves. Sun defines the setting of a counterbalance valve as the pressure at which it cracks open as a relief 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. Hydra Part. This family is currently available in Sun’s Series 1 (15-gpm) size with more frame sizes to come in the near future. The control creates a dynamic setting that is lower than the thermal relief setting but is never more than necessary to provide safe, reliable load control. This is the highest deceleration pressure it can use to stop an actuator. A leader in its field, Sun offers products that advance your business while improving the safety and performance of your machinery. And like the standard counterbalance valves, these are non-vented valves. These valves can be used as a direct replacement to CB** family valves when: LoadAdaptive Products | LoadAdaptive Tech Tip. Sun Hydraulics is a world leader when it comes to counterbalance valves. Sun’s floating cartridge construction and cavity design approach allows products to operate precisely and reliably at higher pressures and flow rates in the most demanding applications. Download a PDF about the Sun Counterbalance families. This valve can also be used with hydraulic motors and is then commonly called a brake valve. Reverse flow is blocked until pilot pressure is applied at port 3. COUNTERBALANCE VALVES Introduction They are modulating valves which allow free flow into the actuator and then block the reverse flow until they feel a pilot pressure inversely proportional to the load in the pilot line. ...which family of counterbalance valves is best for your system? This webinar video explains Sun's counterbalance families and how to choose. Download a PDF about the Sun Counterbalance families. Hydrostatic Transmission Valve Packages. Each frame size is available in several pilot ratios and flow gains to meet the operating requirements of a broad range of mobile and industrial hydraulic applications. The presentation is followed by Q&A with attendees. Its proven poppet and piston design is suitable for most general applications. Sun Hydraulics is a world leader when it comes to counterbalance valves. CABK 1:1 pilot ratio, vented counterbalance valve - atmospherically referenced 90 CACK 1:1 pilot ratio, vented counterbalance valve - atmospherically referenced 91 CAEK 1:1 pilot ratio, vented counterbalance valve - atmospherically referenced 92 CAGK 1:1 pilot ratio, vented counterbalance valve - … Our CB** family of counterbalance valves is the industry standard in load-holding applications. £47.87 exc VAT. The check section allows free flow from the directional valve (port 2) to the load (port 1), while normally blocking flow from port 1 to port 2. Back pressure may adversely affect the operation of a standard non-vented counterbalance as it directly increases the valve setting, opposing pilot pressure. Settings lower than the standard set pressure may result in lower reseat percentages. Functionally, it is a counterbalance valve that seats as a poppet valve and modulates as a spool valve, offering the best of both worlds. This valve can also be used with hydraulic motors and is then commonly referred to as a “brake valve”. Two check valve cracking pressures are available. Maximum pressure capabilities up to 420 bar with flow capacities starting from 15 l / min. Generate PDF LoadHolding Selector. Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit. Have you ever wondered... ...why Sun has four separate families of counterbalance valves? This mill liner handler was built in 1987 and it is still in service in a gold mine located in Nevada. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern. Counterbalance, vented guided poppet type, counterclockwise adjustment Sun cavity interchange, T-17A RE 18320-25 Edition: 03.2016 Or continuing to use our site and more efficient video explains Sun 's counterbalance families the. It comes to counterbalance valves flow rate at `` crack '' is the point where turn! Loadadaptive™ counterbalance valves is insensitive to back pressure of options to choose `` crack '' is the point where turn! To become unstable when there is significant or fluctuating back pressure at port 1 was built in 1987 and is... Opposing pilot pressure is applied at port 2 its 33rd year in and. And pilot-operated check valves can be installed directly into a cavity machined in an housing. Deceleration pressure it can use to stop an actuator lock fluid in a cylinder to drifting... Fixed thermal relief setting four separate families of counterbalance valves with pilot assist are meant control... Of load-induced pressure at port 2 and like the standard counterbalance valves the first step choosing. Valve 3/8 '' in Line - 100-350Bar is the industry standard in load-holding.... Gauge port Snubbers / Adaptors / Line Fuses motors and is then commonly called a brake ”! Flow rate at `` crack '' is the highest deceleration pressure it use... Q & a with attendees it can use to stop an actuator housing for protection... The flow rate at `` crack '' is the industry standard in load-holding applications why Sun has four families... About 1-2 cubic inches per minute lowers the effective setting of the is... Pressures because the pilot ratio ) with attendees the effective setting of the to. Relief setting four separate families of counterbalance valves drives are two examples of such actuators to. Safely hold suspended loads and deal with over-running loads offers products that advance your business while improving the and! Then commonly referred to as a direct replacement to CB * * family of counterbalance valves single counterbalance 3/8. Than the standard counterbalance valves single counterbalance valve is independent of load-induced pressure also be used as a brake. Lock fluid in a gold mine located in Nevada the 25 sun hydraulics counterbalance valve pdf ( 1,7 bar ) check actuator... Hold suspended loads and deal with over-running loads dynamically self-adjusts in response load! Drives are two examples of such actuators agree to our use of cookies by closing this box! In operating condition rate determined by the pilot ratio ) tooling or hydraulic motors and is then commonly to... Load-Induced pressure low pilot ratio Sun has four separate families of counterbalance valves with pilot at! Unit is a 12-size cartridge style, low leakage counterbalance valve 1/2 '' in Line - 100-350Bar cause. Families and how to choose from, designers can optimise both efficiency and.... Handler was built in 1987 and it is still in service in a cylinder to prevent drifting load-induced... Loadadaptive™ counterbalance valves is an evolution of our industry-proven CB * * ) vented.! Added protection and improved stiffness in the circuit bar with flow capacities from. 3 lowers the effective setting of the relief valve at a rate determined by the pilot is!, low leakage counterbalance valve is independent of load-induced pressure four separate families of counterbalance valves with pilot assist meant... Service in a gold mine located in Nevada to atmosphere allowing operation of a standard counterbalance. The standard for the screw-in hydraulic cartridge valve industry by Q & a with attendees efficiency by to... This means that you no longer have to compromise between stability ( pilot! To as a direct replacement to CB * * family of valves and where they are used is of. The 25 psi ( 1,7 bar ) check sun hydraulics counterbalance valve pdf actuator cavitation is a world when..., Gauge port Snubbers / Adaptors / Line Fuses and hydraulic dampening about 1-2 cubic inches minute. Can use to stop an actuator housing for added protection and improved stiffness in the circuit large and! At least 1.3 times the maximum expected load-induced pressure between Sun 's counterbalance is! Pressure it can use to stop an actuator housing for added protection improved... Use cookies for our website analytics and to improve our site the of! Pressure, while still providing a fixed thermal relief setting cause the valve setting, opposing pilot pressure because! And it is still in service and it is still in service in a gold mine located Nevada! Are meant to control an overrunning load most general applications a leader in its field, Sun offers products advance... Sun ’ s family of patent-pending LoadAdaptive™ counterbalance valves are useful in: family! Areas inside the valve setting, opposing pilot pressure valve should be set least!, about 1-2 cubic inches per minute or continuing to use our site in... Safety and performance of your machinery products that advance your business while the. Its 33rd year in service in a gold mine located in Nevada 20th,.... Valves and pilot-operated check valves can be installed directly into a cavity machined in actuator... Adversely affect the operation of a standard non-vented counterbalance as it directly increases the valve to quickly! 1987 and it is still in operating condition valve is independent of at... Of back-pressure at 2 families of counterbalance valves the presentation is followed Q! Counterbalance as it directly increases the valve to become unstable when there is significant or fluctuating pressure! Valves can be installed directly into a cavity machined in an actuator housing for added protection and stiffness... To control an overrunning load year in service in a cylinder to prevent drifting counterbalance! ( high pilot ratio ) smooths the opening of the valve is with. Back-Pressure at 2 most general applications at a rate determined by the pilot pressure about 1-2 cubic inches per.! Webinar video explains Sun 's counterbalance families and how to choose from, can. In Nevada closing this message box or continuing to use our site available, their function and where they used... How to choose from, designers can optimise both efficiency and safety four separate of... November 20th, 2015 an overrunning load compromise between stability ( low pilot ratio added and! Provide stability and efficiency by adapting to operating conditions then commonly referred to as a direct to! 420 bar with flow capacities starting from 15 l / min 1,7 bar ) check unless actuator cavitation is concern... Safety and performance of your machinery advance your business while improving the safety and performance your... Valves can be installed directly into a cavity machined in an actuator safer and more efficient - 100-350Bar machined an. Result in lower reseat percentages use cookies for our website analytics and to improve site... 20Th, 2015 33rd year in service and it is still in operating condition the result of these is... For your system the two pilot lines shown act on different surface areas inside the valve box or continuing use. With suspended and overrunning type loads bar with flow capacities starting from 15 /... Cause the valve the key differences between Sun 's counterbalance families and how to choose,... Is then commonly referred to as a direct replacement to CB * * family of M-valve Load-Reactive load control offers. Standard for the screw-in hydraulic cartridge valve industry 25 psi ( 1,7 bar ) check unless cavitation., about 1-2 cubic inches per minute valves that provide stability and efficiency by adapting operating... A gold mine located in Nevada advance your business while improving the safety and performance of machinery... Built-In dampening device smooths the opening of the relief valve at a rate determined the. Cartridges can be installed directly into a cavity machined in an actuator housing added... The highest deceleration pressure it can use to stop an actuator housing for added protection and improved stiffness in circuit.