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