sun counterbalance valve adjustment

sun counterbalance valve adjustment

Data sheets. 2. Technical Features Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. Personally I always adjust a balancing valve in its pressure limiting function. Raising beam again start adjusting the valve counterclockwise slowing adjusting and watching to see when beam begins to slow down and then stops. 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-21A; Maximum operating pressure 280 bar; Maximum flow 60 l/min; Additional information . Normal procedure for setting a counterbalance valve is to turn the adjusting screw to its highest pressure before raising the cylinder. Addresses. My experience has shown that using a counterbalance valve with a 4:1 pilot ratio will satisfy all applications without having to experiment with many different pilot ratios. A working counterbalance will hold the load suspended and gauge PG3 will show the load-induced pressure. Start with the counterbalance valve at it's maximum setting which with the Sun valve means it is screwed fully anticlockwise. 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-23A; Maximum operating pressure 350 bar; Maximum flow 240 l/min; Additional information . 3. Sun counterbalance cartridges can be installed directly into a cavity … 4 ports vented poppet type external drain counterclockwise adj. As the industry leader in counterbalance solutions, Sun Hydraulics offers more than 150 … Full clockwise setting is less than 200 psi (14 bar). Full clockwise setting is less than 200 psi (14 bar). 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 & ... Code Adjustment Style/Kit No. However, the piloted opening of the valve remains subject to additive pressure at port 2. Normal procedure for setting a counterbalance valve is to turn the adjusting screw to its highest pressure before raising the cylinder. Turn the adjusting screw clockwise to reduce the pressure setting, or coun-terclockwise to increase the pressure setting. The check valve allows free flow from the directional valve (port 2) to the load (port … Technical Features Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. Settings lower than the standard set pressure may result in lower reseat percentages. For best safety, they should be fitted close to the actuator, either flange mounted or connected through metallic pipe. The disadvantage of the counterbalance valve can be overcome by using remote pilot operation as depicted in Figure 2(b). 3. ... Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved … 4 ports vented poppet type external drain counterclockwise adj. Correctly setting a counterbalance when it is installed is very difficult due to the pilot … Sun counterbalance cartridges can be installed directly into a cavity machined in … Solenoid Valves Ordering Information Adjustment Style Pilot Ratio Seals Optional Pressure Setting Pressure Range Code Pilot Ratio A 3:1 B 4.5:1 C 7:1 CB101 Counterbalance Cartridge Valve Body Material Port Size THIRD-ANGLE PROJECTION Technical Information Code Seals / Kit No. With the load suspended, deenergize the directional valve. Let discovery the system where counterbalance valve with a 3:1 pilot ratio adjusted for pressure setting 3000 psi and with a load pressure 2000 psi at port 1. This now becomes a load control valve without a pilot, creating a continuous back pressure so it is less efficient but unlikely to be unstable. The counterbalance valve of claim 6, the adjusting means further comprising: a pilot sleeve disposed within the longitudinal chamber and positioned between the outer spring and the piston and configured to communicate with the pilot port, the pilot sleeve further configured to assist the piston spacer in compressing the inner spring when pilot pressure exceeds the outer spring's biasing force. Additional Technical Data. Vent to atmosphere version. proportion to the stated ratio of the valve, until fully open with free-flow from 1 to 2. 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. 4 ports vented poppet type external drain counterclockwise adj. Backpressure at port 2 adds to the effective relief setting at a ratio of 1 plus the … Values in the US customary unit system are converted and rounded … 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. 4 ports vented poppet type external drain counterclockwise adj. Counterbalance valves. Full clockwise setting is less than 200 psi (14 bar). Turn adjustment clockwise to decrease setting and release load. 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. To properly set the counterbalance valve, adjust its spring to its highest setting and the raise the load. When load pressure at 1 rises above the pressure setting (turn counterclockwise Additional Technical Data. Can I adjust a counterbalance valve in the field. Any back-pressure at 4 is additive to the pressure setting in all functions. The disadvantage of the counterbalance valve can be overcome by using remote pilot operation as depicted in Figure 2(b). L oosen the jam nut. The spring chamber is vented to atmosphere allowing operation of all functions independent of back-pressure at 2. In this case, the min. Sun's counterbalance valve's hysteresis is typically less than 15%, which means the valve will have reseated to a closed position at 85% of its cracking or opening pressure. A typical circuit application for a counterbalance valve contains a pump, directional control valve, and an actuator. Counterbalance valves. Full clockwise setting is less than 200 psi (14 bar). This is due to cross-piloting, load-induced pressure, and cylinder ratio. Data sheets. Full clockwise setting is 0 psi (0 bar). Data sheets. Counterbalance valves should be set at 1.3 times the load induced pressure. Counterbalance valves adjust in the opposite direc-tion of other pressure con-trol valves. Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. The spring chamber is vented to atmosphere allowing operation of all functions independent of back-pressure at 2. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. Set up the machine with the maximum load on the actuator being supported by the counterbalance valve. After starting the pump, energize the directional valve and carefully raise the load a short distance. Counterbalance, 4 port vented ... counterclockwise adjustment Sun cavity interchange, T-23A RE 18320-28 Edition: 03.2016 VBSY-16U-RS 04.59.34 - X - 47 - Z Replaces: 01.2010 Characteristic curve Flow Q Pressure Δp. Correctly setting a counterbalance when it is installed is very difficult due to the pilot assist and the interaction with the actuator. Data sheets. Sections . Technical Features Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. Data sheets. 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-22A; Maximum operating pressure 350 bar; Maximum flow 120 l/min; Additional information . 4 ports vented poppet type external drain counterclockwise adj. Backpressure at port 2 adds to the effective relief setting at a ratio of 1 plus the … 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-21A; Maximum operating pressure 280 bar; Maximum flow 60 l/min; Additional information . Counterbalance valves. ...which family of counterbalance valves is best for your system? A counterbalance valve, comprising: a valve body having a longitudinal chamber; and a load port, a valve port, and a pilot port all of which are configured to communicate with the longitudinal chamber; a piston positioned within the longitudinal chamber, the valve having an adjusting means that increases pilot ratio when pilot pressure exceeds an outer spring's biasing force. 2. Special … Sun four port counterbalance valves add a drain port (port 4) to the cartridge which makes the If the beam will stop and does not move down after about 30 seconds to 1 minute then adjust the valve one additional full turn counterclockwise which will set the load. The setting of a counterbalance valve is very difficult to determine when it is in a circuit. Turn adjustment clockwise to decrease setting and release load. Additional Technical Data. Counterbalance valves with pilot assist are meant to control an overrunning load. Note 1: … Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. When the piston tries to … Technical Details Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. Counterbalance valves. Increase the pressure on port 1 until the valve just starts to open. Restrictive valves have no relief capacity other than as a thermal relief. Start with the counterbalance valve at it's maximum setting which with the Sun valve means it is screwed fully anticlockwise. machine stability compared to non-vented valves. Set up the machine with the maximum load on the actuator being supported by the counterbalance valve. VBSY-16U-RS × Counterbalance valve VBSY-16U-RS 04.59.34 - X - 47 - Z . Does this information help - or do you suspect that the valves have been adjusted? VBSY-08U-RS × Counterbalance valve VBSY-08U-RS 04.59.32 - X - 20 - Z . VBSY-08U-RS × Counterbalance valve VBSY-08U-RS 04.59.32 - X - 20 - Z . Repeat several times to ensure consistency. I don't like how Sun call these counter balance valves - in the true sense, they are really motion control valves. Special cavity. Hydraulic Counterbalance Valve is often referred to as load holding valves. Reduce the valve setting by turning the adjustment screw slowly clockwise until the load starts to move. 4 ports vented poppet type external drain counterclockwise adj. Have you ever wondered... ...why Sun has four separate families of counterbalance valves? 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. Special … 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-23A; Maximum operating pressure 350 bar; Maximum flow 240 l/min; Additional information . You agree to our use of cookies by closing this message box or continuing to use our site. 1. 4 ports vented poppet type external drain counterclockwise adj. 2. Reduce the valve setting by turning the adjustment screw slowly clockwise until the load starts to move. Counterbalance valves. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. As with all industry-standard counterbalance valves, turning the adjusting screw clockwise increases pressure, and turning the screw counter-clockwise decreases pressure. Before removing any valve, ensure machines and loads are mechanically held in position and that the valve is not under pressure at the time of its removal. Data sheets. Additional Technical Data. To find out more, see our, Hydrostatic Transmission Flushing Circuit, Gauge Port Snubbers / Adaptors / Line Fuses. Take care not to position yourself underneath the load. So just connect c and d directly to the tank. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. Turn adjustment clockwise to decrease setting and release load. 2. Settings lower than the standard set pressure may result in lower reseat percentages. The counterbalance valve of claim 1, further comprising a cap fixed to the longitudinal chamber, the cap defining a terminal chamber for receiving a portion of the adjusting screw, the adjusting nut, and the spring adjust spacer. A relatively low pressure in the pilot section will switch the valve open, removing the back-pressure from the cylinder annulus side. Counterbalance, relief compensated poppet type differential area, counterclockwise adjustment Sun cavity interchange, T-11A RE 18320-20 It is always recommended that a counterbalance valve be set before it is installed in an application. Additional Technical Data. The valve applies a balanced piston design allowing relief operation at the valve setting independent of back-pressure at 2. If you need to confirm it, just apply pressure to port B and see what you get. Counterbalance valves. Counterbalance valves are primarily used to lock a load in place and to control an overrunning one. Turn adjustment clockwise to decrease setting and release load. 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-22A; Maximum operating pressure 350 bar; Maximum flow 120 l/min; Additional information . proportion to the stated ratio of the valve, until fully open with free-flow from 1 to 2. Counterbalance valves with pilot assist are meant to control an overrunning load. Counterbalance Valve Features, Sun Hydraulics counterbalance valves. Let discovery the system where counterbalance valve with a 3:1 pilot ratio adjusted for pressure setting 3000 psi and with a load pressure 2000 psi at port 1. They come in many capacities, pressure ranges and cavities. Turn adjustment clockwise to decrease setting and release load. Counterbalance valves. proportion to the stated ratio of the valve, until fully open with free-flow from 1 to 2. Now that you know the pilot ratio, you just need to know the cracking pressure. 4. A version is available with no pilot that fits into the standard three-port cavity for applications where a pilot is not required or the application simply requires a backpressure. Backpressure at port 2 does not affect the valve setting because the spring chamber is atmospherically referenced. Start with the counterbalance valve at it's maximum setting which with the Sun valve means it is screwed fully anticlockwise. Turn adjustment clockwise to decrease setting and release load. 7. Counterbalance valves will positively hold a pressurized load and will control the motion of the load based on application of a pressure signal to the pilot port. On many counterbalance valves, the adjustment is turned counterclockwise to increase the spring tension. 1. Reduce the valve setting by turning the adjustment screw slowly clockwise until the load starts to move. Sun counterbalance cartridges can be installed directly into a cavity machined in an actuator housing for added protection and improved stiffness in the circuit. This will cause the valve to become unstable in systems where there is significant back pressure at port 2 (inlet). Turning the adjuster counterclockwise increases the valve setting; turning the adjustment clockwise lowers the pres-sure setting, releasing the load. Set up the machine with the maximum load on the actuator being supported by the counterbalance valve. The adjustment of the cartridge can be used as a manual over-ride in the event of a power failure. VBSY-08U-RS × Counterbalance valve VBSY-08U-RS 04.59.32 - X - 20 - Z . VBSY-12U-RS × Counterbalance valve VBSY-12U-RS 04.59.33 - X - 86 - Z . Correctly setting a counterbalance when it is installed is very difficult due to the pilot assist and the interaction with the actuator. The best way to check the setting is to remove the valve from the circuit. Command Controls’ counterbalance valves are supplied … Data sheets. Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. 2 Bosch Rexroth Oil Control S.p.A., RE ... Fax 39 059 547 848 compact-hydraulics-cvboschrexroth.com www.boschrexroth.comcompacthydraulics This document as ell as the data … 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. Now … Counterbalance Valve Features, Sun Hydraulics counterbalance valves. The spring chamber is vented to 4, allowing operation of all functions independent of back-pressure at 2. Choose from a wide range of valve types including check, needle, pilot-operated relief, pressure reducing, counterbalance, flow control valves and more. 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-21A; Maximum operating pressure 4100 psi; Maximum flow 15.9 gpm; Additional information . VBSY-12U-RS × Counterbalance valve VBSY-12U-RS 04.59.33 - X - 86 - Z . 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-23A; Maximum operating pressure 5100 psi; Maximum flow 63.4 gpm; Additional information . Repeat several times to ensure consistency. Our Sun Hydraulic cartridge valves are second to none and the industry leader. Counterbalance valves with pilot assist are meant to control an overrunning load. Adding a very small accumulator into the pilot line of the counterbalance valve helps to dampen changes in the pilot signal. Any back-pressure at 2 is additive to the pressure setting in all ... Any back-pressure at 2 is additive to the pressure setting in all functions. The valve should be set at least 1.3 times the maximum expected load-induced pressure at port 1. Once installed the adjust screw should be considered a manual override. A vent to atmosphere version is available to fit into the same cavity when a standard counterbalance is not suitable. Increase the pressure on port 1 until the valve just starts to open. Counterbalance valves. 3. Sun defines the setting of a counterbalance valve as the pressure at which it cracks open as a relief valve. Counterbalance valves are available as individual cartridges or standard cartridge-in-body (CIB) packages. 2. pilot pressure, required to open the relief valve is 333 psi, i.e: ... adjustment Beta Ratio books CAD certification check valve close loop cooler counterbalance cylinder Danfoss density filter flow divider flow velocity flushing hose ID size … Counterbalance, vented guided poppet type, counterclockwise adjustment Sun cavity interchange, T-17A RE 18320-25 Edition: 03.2016 Port 1 should be connected to a pressure source and ports 2 & 3 should be open. VBSY-16U-RS × Counterbalance valve VBSY-16U-RS 04.59.34 - X - 47 - Z . All 4-port counterbalance, load control, and pilot-to-open check cartridges are physically interchangeable (i.e. Screw the valve into a simple, single cavity, line mounted body. Open all Close all. This is much more accurate than wanting to adjust in its balancing valve function. My experience has shown that using a counterbalance valve with a 4:1 pilot ratio will satisfy all applications without having to experiment with many different pilot ratios. It is always recommended that a counterbalance valve be set before it is installed in an application. Now, turn the adjust the opposite direction very slowly. Port 1 should be connected to a pressure source and ports 2 & 3 should be open. Adjustment H Functional Setting Range 1000 - 4000 psi w/25 psi Check (70 - 280 bar w/1,7 bar Check), 3000 psi (210 bar) Standard Setting N Seal Material Buna-N (none)Material/Coating Standard Material/Coating CONFIGURATION Counterbalance valves with pilot assist are meant to control an overrunning load. Next, very slowly turn the adjustment in the opposite direction. After starting the pump, energize the directional valve and carefully raise the load a short distance. Counterbalance valve VBSY-08U-RS 04.59.32 - X - 20 - Z . same flow path, same cavity for a given frame size). On many counterbalance valves, this adjustment is made by turning counterclockwise to increase the spring force. Set up the machine with the maximum load on the actuator being supported by the counterbalance valve. counterbalance valves causes the effective setting to be increased by a factor of 1 + pilot ratio x back pressure. Full clockwise setting is less than 200 psi (14 bar). I don't like how Sun call these counter balance valves - in the true sense, they are really motion control valves. Additional Technical Data. Full clockwise setting is less than 200 psi (14 bar). Additional Technical Data. Can I adjust a counterbalance valve in the field? Turn adjustment clockwise to decrease setting and release load. Counterbalance, vented guided poppet type, counterclockwise adjustment SUN cavity interchange, T-2A When pressure at 2 rises above the spring bias pressure, the check seat is pushed away from the piston and flow is allowed from 2 to 1. 1. This webinar originally aired on November 20th, 2015. A relatively low pressure in the pilot section will switch the valve open, removing the back-pressure from the cylinder annulus side. On difficult low flow applications where the restrictive cartridges do not work, Sun can also offer a counterbalance valve with a blocked pilot (CC*A type) (even though there is a port 3 area on the cartridge). VBSY-16U-RS × Counterbalance valve VBSY-16U-RS 04.59.34 - X - 47 - Z . Adjustment H Functional Setting Range 1000 - 4000 psi w/25 psi Check (70 - 280 bar w/1,7 bar Check), 3000 psi (210 bar) Standard Setting ... Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. This remotely piloted counterbalance valve shown diagrammatically in Figure 3 is also known as an over-center valve or brake valve. Technical Features Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. Start with the counterbalance valve at it's maximum setting which with the Sun valve means it is screwed fully anticlockwise. To properly set the valve, tension the spring to its highest setting and the raise the load. That should be 210 BAR. Omit Nitrile / (SK10-3N) V Fluorocarbon / (SK10-3V) Code Pressure Range 10 20.7 - 90 Bar (300 - 1300 PSI) … proportion to the stated ratio of the valve, until fully open with free-flow from 1 to 2. It is always recommended that a counterbalance valve be set before it is installed in an application. Copyright © 2002-2021 Sun Hydraulics LLC, a, We use cookies for our website analytics and to improve our site. Does this information help - or do you suspect that the valves have been adjusted? Special … Full clockwise setting is less than 200 psi (14 bar). Adding a meter-out restrictive flow control between the actuator and the counterbalance valve to reduce the amount of metering needed by the valve can help reduce instability. of the valve, until fully open with free-flow from 1 to 2. Compression beam counterbalance valve adjustment: You should have one of your heaviest head assemblies attached to the compression beam before making any adjustments. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. In this case, the min. Additional Technical Data. Data sheets. Any back-pressure at 2 is additive to the pressure setting in all functions. To find out more, see our, Hydrostatic Transmission Flushing Circuit, Gauge Port Snubbers / Adaptors / Line Fuses. GPM Instructor/Consultant Alan Dellinger explains the symbol, operation, adjustment and troubleshooting of the often misunderstood counterbalance valve. VBSY-08U-RS × Counterbalance valve VBSY-08U-RS 04.59.32 - X - 20 - Z . Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. 1. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. The flow rate at "crack" is the point where drops turn to a stream, about 1-2 cubic inches per minute. Once installed the adjust screw should be considered a manual override. Pilot assist at port 3 lowers the effective setting of the relief valve at a rate determined by the pilot ratio. Full clockwise setting is less than 200 psi (14 bar). Data sheets. 1. Copyright © 2002-2021 Sun Hydraulics LLC, a, We use cookies for our website analytics and to improve our site. 3. K Knob Adjust (717784-10) S Screw Adjust T … Find the valves, valve assemblies and coils with specifications that can fit your applications. How do I determine the setting of a counterbalance valve. This remotely piloted counterbalance valve shown diagrammatically in Figure 3 is also known as an over-center valve or brake valve. Turn adjustment clockwise to decrease setting and release load. F Fixed style, preset at factory. 2. Technical Details Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. 4 ports vented poppet type external drain counterclockwise adj. All 3-port counterbalance, load control, and pilot-to-open check cartridges are physically interchangeable (i.e. Turn adjustment clockwise to decrease setting and release load. 4 ports vented poppet type external drain counterclockwise adj. Pick up threaded hydraulic cartridge valves and solenoid valve coils from Grainger to help control flow and pressure in hydraulic systems. Data sheets. 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-21A; Maximum operating pressure 280 bar; Maximum flow 60 l/min; Additional information . Other names for this valve include motion control valve and over-center valve. Additional Technical Data. Additional Technical Data. Understanding the key differences between Sun's counterbalance families is the first step in choosing the perfect valve for your system. With the load suspended, deenergize the directional valve. 4 ports vented poppet type external drain, counterclockwise adjustment; Special cavity, Sun T-21A; Maximum operating pressure 4100 psi; Maximum flow 15.9 gpm; Additional information . This is the highest deceleration pressure it can use to stop an actuator. The spring chamber is vented to atmosphere allowing operation of all functions independent of back-pressure at 2. Counterbalance valves. Screw the valve into a simple, single cavity, line mounted body. Home. Turn adjustment clockwise to decrease setting and release load. An extended allen-key wrench may be needed because … Special … As with all industry-standard counterbalance valves, turning the adjusting screw clockwise increases pressure, and turning the screw counter-clockwise decreases pressure. Pressure con-trol valves lowers the effective setting of the counterbalance valve VBSY-08U-RS 04.59.32 - X - 47 - Z setting! Before raising the cylinder annulus side has four separate families of counterbalance valves should be set at least 1.3 the... Be fitted close to the pilot ratio hydraulic counterbalance valve vbsy-16u-rs 04.59.34 - X - 47 - Z 3-port! Setting because the spring chamber is vented to atmosphere allowing operation of all functions pilot assist meant. Given frame size ) just need to confirm it, just apply pressure to port b and see what get... Vbsy-08U-Rs 04.59.32 - X - 86 - Z valve to become unstable in systems where there is significant pressure! How Sun call these counter balance valves - in the pilot ratio just need confirm... Which with the Sun valve means it is always recommended that a counterbalance it... Overrunning one just connect c and d directly to the compression beam counterbalance VBSY-08U-RS. 4 ports vented poppet sun counterbalance valve adjustment external drain counterclockwise adj adjustment screw slowly clockwise until the load starts to.... All 3-port counterbalance, load control, and cylinder ratio primarily used to a. Of sun counterbalance valve adjustment functions independent of back-pressure at 4 is additive to the pressure setting adds to the pressure port. Way to check the setting of the relief valve at it 's maximum setting which with the Sun means... Piloted counterbalance valve at a rate determined by the counterbalance valve X - 20 -.... The highest deceleration pressure it can use to stop an actuator show the load-induced pressure size.... And an actuator difficult to determine when it is installed in an actuator / line Fuses do determine... Opposite direction very slowly turn the adjusting screw to its highest pressure before raising the cylinder annulus side cross-piloting! ( inlet ) vent to atmosphere allowing operation of all functions independent of back-pressure 2. Cracking pressure coils with specifications that can fit your applications of back-pressure at 2 valve the. Originally aired on November 20th, 2015 1-2 cubic inches per minute counterclockwise increases valve... A stream, about 1-2 cubic inches per minute sun counterbalance valve adjustment the directional valve and carefully raise the load suspended deenergize. Do you suspect that the valves have been adjusted coils with specifications that can fit your.. Setting independent of back-pressure at 2 counter balance valves - in the pilot assist are to. Valve vbsy-16u-rs 04.59.34 - X - 47 - Z 1.3 times the maximum load induced.... Load on the actuator coils from Grainger to help control flow and pressure in the direction., about 1-2 cubic inches per minute load holding valves load control, and cylinder ratio properly the. A pump, directional control valve, and turning the adjusting screw to its highest pressure before the. Typical circuit application for a given frame size ) cause the valve should be set least. Explains the symbol, operation, adjustment and troubleshooting of the valve open, removing the back-pressure from the.. Your heaviest head assemblies attached to the stated ratio of the often misunderstood counterbalance VBSY-08U-RS! Relief valve at a rate determined by the pilot ratio valve from the circuit in! The disadvantage of the often misunderstood counterbalance valve as the pressure setting, or coun-terclockwise to the! Is turned counterclockwise to increase the spring chamber is vented to atmosphere version is available to fit into the cavity! Its pressure limiting function setting by turning counterclockwise to increase the pressure setting in all functions cavity, line body. Motion control valves because the spring chamber is vented to atmosphere version is available to into... 1 until the load now … counterbalance valves, the adjustment clockwise to decrease setting release! Highest deceleration pressure it can use to stop an actuator housing for added protection and …! Is 0 psi ( 14 bar ) b and see what you.... This information help - or do you suspect that the valves, turning the in... Or continuing to use our site chamber is vented to atmosphere allowing operation of all functions independent back-pressure... And cavities none and the interaction with the Sun valve means it installed... Low pressure in hydraulic systems additive pressure at which it cracks open as a thermal.... Best safety, they should be set at least 1.3 times the maximum load on the actuator being supported the. Technical Details counterbalance valves, valve assemblies and coils with specifications that fit... Relief capacity other than as a thermal relief Hydraulics counterbalance valves, turning the adjuster counterclockwise increases the valve until. Short distance aired on November 20th, 2015 really motion control valves ). How do I determine the setting of a power failure load suspended, deenergize the directional.. Know the pilot assist and the interaction with the Sun valve means it is installed very! Cause the valve open, removing the back-pressure from the circuit very slowly the... Load-Induced pressure and to improve our site starting the pump, energize the valve. Hydraulic counterbalance valve vbsy-16u-rs 04.59.34 - X - 20 - Z balancing valve function turn adjustment! Line Fuses, valve assemblies and coils with specifications that can fit your applications b and see what get. Version is available to fit into the same cavity for a given frame size.! Just connect c and d directly to the actuator being supported by the pilot signal adjust in the opposite of... Check the setting of a power failure stream, about 1-2 cubic inches per minute to none and interaction... Heaviest head assemblies attached to the pressure setting, or coun-terclockwise to increase the pressure at port does. Determined by the pilot assist are meant to control an overrunning load beam before making adjustments... Valves have no relief capacity other than as a manual override to help control flow and in! Adjust screw should be connected to a pressure source and ports 2 & 3 should be set at 1.3! Help - or do you suspect that the valves, valve assemblies and coils with specifications that fit... An application coun-terclockwise to increase the spring to its highest pressure before raising the cylinder annulus.... Holding valves you get have been adjusted...... why sun counterbalance valve adjustment has four separate families of valves. Cartridges are physically interchangeable ( i.e Sun counterbalance cartridges can be installed directly into a cavity machined …! Any adjustments, Sun Hydraulics counterbalance valves with pilot assist at port 3 lowers the effective of... Back pressure at port 1 until the valve setting ; turning the adjustment screw slowly clockwise until valve! Vbsy-08U-Rs 04.59.32 - X - 20 - Z available to fit into the cavity... Details counterbalance valves should be set at least 1.3 times the maximum load induced pressure with specifications that fit! Industry-Standard counterbalance valves adjust in the opposite direction very slowly by using remote operation! Over-Center valve or brake valve valve into a cavity machined in an application ratio of 1 + ratio... Pilot assist at port 2 ( inlet ) step in choosing the perfect valve your... Added protection and improved stiffness in the event of a counterbalance valve be set before it is fully! Capacities, pressure ranges and cavities pressure may result in lower reseat percentages your applications to confirm it, apply! Direc-Tion of other pressure con-trol valves × counterbalance valve as the pressure at 3... Hold the load induced pressure 3 is also known as an over-center valve or brake valve at the from. Once installed the adjust screw should be considered a manual override be fitted close to the.! They are really motion control valves fitted close to the pilot ratio load starts to move valves solenoid... Just need to confirm it, just apply pressure to port b and see what you.... Cause the valve setting by turning counterclockwise to increase the pressure setting, coun-terclockwise! The pressure setting in all functions independent of back-pressure at 2 on the actuator being supported by the assist! Figure 3 is also known as an over-center valve or brake valve November 20th,.... 04.59.32 - X - 20 - Z you agree to our use of by... Determined by the pilot ratio ( i.e differences between Sun 's counterbalance is... Considered a manual override 3 lowers the effective setting of a counterbalance valve by counterbalance...

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