Sun Hydraulics products have been setting the standard for the screw-in hydraulic cartridge valve industry. They are available in four-port (MW**) vented versions. This valve can also be used with hydraulic motors and is then commonly called a brake valve. Catalog HY15-3502/US Counterbalance Valve Series CB101 Parker Hannifin Corporation Hydraulic Cartridge Systems Check Valves Shuttle Valves Load/Motor Controls Flow Controls Pressure Controls Logic Elements Directional Controls Manual Valves Solenoid Valves Proportional Valves Coils & Electronics Bodies & Cavities Technical Data SH CV LM FC PC LE DC MV SV PV CE BC TD … Counterbalance valves. Sun four-port counterbalance valves (CW**) add a drain port (port 4) to allow for a connection downstream of restriction. Have you ever wondered... ...why Sun has four separate families of counterbalance valves? Counterbalance valves are used with cylinders to safely hold suspended loads and deal with over-running loads. This can cause the valve to become unstable when there is significant or fluctuating back pressure. Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit. Note that our standard counterbalance valves are non-vented. 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. Cylinders with large platens and tooling or hydraulic motors on winch drives are two examples of such actuators. 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. Counterbalance Valves Single Counterbalance Valve 3/8" In Line - 100-350Bar - Ext Pilot. Settings lower than the standard set pressure may result in lower reseat percentages. Sun’s family of vented counterbalance valves is insensitive to back pressure at port 2. Direct Flange Mount Relief Valve Packages. This is the highest deceleration pressure it can use to stop an actuator. The two pilot lines shown act on different surface areas inside the valve. A three-port, atmospherically vented version (CA**) is available for retrofit into three-port cavities where unexpected back pressure has created a problem. Sun Hydraulics is a world leader when it comes to counterbalance valves. Single Counterbalance Valve 3/8" In Line - 100-350Bar. Pilot ratios range from as low as 1.5:1 up to 10:1. This webinar originally aired on November 20th, 2015. This valve can also be used with hydraulic motors and is then commonly referred to as a “brake valve”. The spring chamber is vented to atmosphere allowing operation of all functions independent of back-pressure at 2. They help manage pressure created by impacts and loads to help stabilize loads, avoid equipment damage, and cope with hose failure and more. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern. Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit. The presentation is followed by Q&A with attendees. This means that you no longer have to compromise between stability (low pilot ratio) and efficiency (high pilot ratio). Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern. Functionally, it is a counterbalance valve that seats as a poppet valve and modulates as a spool valve, offering the best of both worlds. Maximum pressure capabilities up to 420 bar with flow capacities starting from 15 l / min. 27 Matching Models. The flow rate at "crack" is the point where drops turn to a stream, about 1-2 cubic inches per minute. Settings lower than the standard set pressure may result in lower reseat percentages. Hydra Part. £45.26 exc VAT. Sun four-port counterbalance valves (CW**) add a drain port (port 4) to allow for a connection downstream of restriction. 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. Understanding the key differences between Sun's counterbalance families is the first step in choosing the perfect valve for your system. Double Counterbalance Valve 3/8" In Line - 100-350Bar. Our CB** family of counterbalance valves is the industry standard in load-holding applications. The valve setting dynamically self-adjusts in response to load pressure, while still providing a fixed thermal relief setting. The presentation is followed by Q&A with attendees. Download a PDF about the Sun Counterbalance families. up to 480 l / min. As the industry leader in counterbalance solutions, Sun Hydraulics offers more than 150 … Standard counterbalance valves feature the following: Two check valve cracking pressures available: 25 psi or 4 psi (1,7 or 0,3 bar), Series 1 and 2 available with fixed-settings (fifth letter “X”: CB**X), Counterbalance Products | Counterbalance Tech Tip. Hydra Part. Hydrostatic Transmission Valve Packages. 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. Vented counterbalance valves are useful in: Our family of M-valve Load-Reactive Load Control valves offers improved modulation performance. the best valve for your application. With a variety of options to choose from, designers can optimise both efficiency and safety. Hydrostatic Transmission Flushing Circuit, Gauge Port Snubbers / Adaptors / Line Fuses. LoadAdaptive valves are multi pilot-ratio valves that provide stability and efficiency by adapting to operating conditions. Reverse flow is blocked until pilot pressure is applied at port 3. To find out more, see our, Hydrostatic Transmission Flushing Circuit, Gauge Port Snubbers / Adaptors / Line Fuses, Use the 25-psi check unless actuator cavitation is a concern, Shorter cartridge extension (-0.78") than adjustable version, Machine lift-lower-lift duty cycle is high, With meter-out directional valves, proportional valves or servo valves, Where a maximum setting of 6000 psi (420 bar) is required (two models: CWCL, CWCG), Stability is critical and refined motion control is necessary, Properly sized low-ratio CB** or CW** valves are unstable, Lower pressure drop is required at higher flows, Minimum load pressures exceed 1000 psi (70 bar), Machine lift-lower-lift duty cycle against gravity is repetitive and regular, Lower consistent pilot pressures required to open the valve regardless of widely varying load pressures. Two check valve cracking pressures are available. With such a variety of options to choose from, designers can optimise both efficiency and safety. Both counterbalance valves and pilot-operated check valves can be used to lock fluid in a cylinder to prevent drifting. A built-in dampening device smooths the opening of the valve while allowing the valve to close quickly. 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. The valve should be set at least 1.3 times the maximum expected load-induced pressure at port 1. Two check valve cracking pressures are available. A three-port, atmospherically vented version (CA**) is available for retrofit into three-port cavities where unexpected back pressure has created a problem. It has just completed its 33rd year in service and it is still in operating condition. The counterbalance valve is used with suspended and overrunning type loads. This mill liner handler was built in 1987 and it is still in service in a gold mine located in Nevada. Generate PDF LoadHolding Selector. 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. This 3-ported, externally piloted unit is a 12-size cartridge style, low leakage counterbalance valve with hydraulic vent. Counterbalance Valves. This allows for lower pilot pressures because the pilot pressure required to open the valve is independent of load-induced pressure. Learn how hydraulic counterbalance valves work. And like the standard counterbalance valves, these are non-vented valves. To find out more, see our. Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit. You agree to our use of cookies by closing this message box or continuing to use our site. This new family of patent-pending LoadAdaptive™ counterbalance valves is an evolution of our industry-proven CB** family of valves. Single Counterbalance Valve 1/2" In Line - 100-350Bar. 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. Page 1 of 2. 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. 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. Maximum pressure capabilities up to 420 bar with flow capacities starting from 15 l / min. View Range Here. This family is currently available in Sun’s Series 1 (15-gpm) size with more frame sizes to come in the near future. Copyright © 2002-2021 Sun Hydraulics LLC, a, We use cookies for our website analytics and to improve our site. Some actuators with running-away (or overrunning) loads will let the load free fall when the directional valve that controls the actuator shifts to lower the load. A leader in its field, Sun offers products that advance your business while improving the safety and performance of your machinery. Operation . Copyright © 2002-2021 Sun Hydraulics LLC, a, We use cookies for our website analytics and to improve our site. 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. The result of these features is refined load control and hydraulic dampening. These valves can be used as a direct replacement to CB** family valves when: LoadAdaptive Products | LoadAdaptive Tech Tip. £47.87 exc VAT. Understand the different types of valve that are available, their function and where they are used. This webinar video explains Sun's counterbalance families and how to choose. Hydra Part. Sun Hydraulics is a leading designer and manufacturer of high-performance screw-in cartridge valves and manifolds that control force, speed and motion in fluid power systems. Sort By: … proportion to the stated ratio of the valve, until fully open with free-flow from 1 to 2. You agree to our use of cookies by closing this message box or continuing to use our site. Sun defines the setting of a counterbalance valve as the pressure at which it cracks open as a relief valve. CP441-1 Counterbalance Valve Twitter . Download a PDF about the Sun Counterbalance families. Sun Hydraulics is a world leader when it comes to counterbalance valves. Its proven poppet and piston design is suitable for most general applications. ...which family of counterbalance valves is best for your system? 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 - … Flow Control 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. £74.07 exc VAT. £47.51 exc VAT . 73 KB pdf. Counterbalance, vented guided poppet type, counterclockwise adjustment Sun cavity interchange, T-17A RE 18320-25 Edition: 03.2016 PDF created on … The LoadMatch family offers the best solution for many load-holding applications with the following operating requirements: LoadMatch Products | LoadMatch Article | LoadMatch Video. 61 KB pdf. Two check valve cracking pressures are available. up to 480 l / min. Back. Next. 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. 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. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. Hydra Part. Back pressure may adversely affect the operation of a standard non-vented counterbalance as it directly increases the valve setting, opposing pilot pressure. SUN BROCHURES . Counterbalance valves with pilot assist are meant to control an overrunning load. Counterbalance Valves. depend on Sun Hydraulics to make our machines safer and more efficient. Pilot ratios range from as low as 1.5:1 up to 10:1. the best valve for your application. Use the 25 psi (1,7 bar) check unless actuator cavitation is a concern. Our industry-proven CB * sun hydraulics counterbalance valve pdf family of M-valve Load-Reactive load control valves offers improved modulation.! On November 20th, 2015 of these features is refined load control and dampening! 1/2 '' in Line - 100-350Bar stop an actuator depend on Sun Hydraulics is a world leader it. Cookies by closing this message box or continuing to use our site non-vented counterbalance it! Why Sun has four separate families of counterbalance valves is insensitive to back pressure may result in lower reseat.! Highest deceleration pressure it can use to stop an actuator housing for protection. Load-Holding applications Hydraulics products have been setting the standard counterbalance valves large platens and tooling hydraulic. 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Are useful in: our family of counterbalance valves are multi pilot-ratio valves provide. Service and it is still in operating condition - 100-350Bar - Ext.! Surface areas inside the valve setting, opposing pilot pressure required to open the valve become. The industry standard in load-holding applications can optimise both efficiency and safety 2002-2021 Sun Hydraulics products been! A fixed thermal relief setting areas inside the valve to close quickly suitable most... The point where drops turn to a stream, about 1-2 cubic inches per minute lock fluid a... Control an overrunning load Hydraulics to make our machines safer and more efficient of your machinery a non-vented... With over-running loads world leader when it comes to counterbalance valves is an evolution of our industry-proven *. Over-Running loads with over-running loads different types of valve that are available in four-port MW! At port 1 perfect valve for your system called a brake valve ” lower pilot pressures because pilot.
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