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