Counterbalance valves should be set at least 1.3 times the maximum load induced pressure. Turn adjustment clockwise to decrease setting and release load. Full clockwise setting is less than 200 psi (14 bar). Backpressure at port 2 adds to the effective relief setting at a ratio of 1 plus the pilot ratio times the backpressure.

If a load must be controlled while in motion, a counterbalance valve should be used. For this reason, counterbalances are often referred to as “motion control 

A counterbalance valve is a combination of a pilot operated relief and a reverse free flow check valve. When utilized as a load holding valve in a hydraulic cylinder application, the free flow

Our counterbalance valves offer optimal load holding performance while also providing smooth, modulated motion of your load. Features and benefits Flow rating up to 270 l/min [70 US gal/min] Pressure rating up to 350 bar [5075 psi] Designs available from -8 size to -20 size enabling correct valve sizing for almost all applications

Parker counterbalance valves are screw-in type cartridge valves that control the pressure at an actuator controlling its motion. Uses include controlling over-running loads in cylinders and

The counterbalance valves block flow from returning to the reservoir, thus holding the actuator in place. The valve actuator represents the electromagnets that control the directional valve position. When electromagnet B is energized, the directional valve is in the negative position and connects ports A and B to the pressure port P.

Counterbalance valves are used in hydraulic systems working with an overriding (run-away) or suspended load. They are designed to create backpressure at the return line of the actuator to prevent losing control over the load. The following illustration shows a counterbalance valve schematic. If a directional valve (not shown in the picture) is

Load Holding Motion Control valve - Counterbalance valve A-VBSO-SE-CC-30-PL-FC2 08.45.21 - X - Y - Z. Single, relief compensated; Flangeable; Maximum operating pressure up to 410 bar; Maximum flow 60 l/min; Data sheets. Additional Technical Data.

Counterbalance Valves | McMaster-Carr System of Measurement Inch Metric Inlet Pipe Size 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 M5 M7 Actuation Electric (Solenoid) Pressure Manual Air Machine For Use With Air Argon Beverage Butane Compressed Air Compressed Gas Ethylene Glycol Food Grease Helium Hydraulic Fluid Krypton Natural Gas Neon Nitrogen Oil

So basically a counterbalance valve is a hydraulic system pressure control valve that is used as a safety device to prevent the movement of a 

Counterbalance valves have no pilot ratio and rely purely on line pressure to open them. If a counterbalance valve is used to support a cylinder, the total pressure at the cylinder side of the valve is a sumation pressure required to overcome the spring force plus any pressure drop caused by the flow of oil through the valve.

Counterbalance valves can be compared to elevator counterweights. A heavy elevator car is tough for a motor to start and stop on its own. Without a counterweight, raising or lowering the car is tough! The motor and drawworks have a hard time starting and controlling the load. Elevator Without Counterweight. Elevator With Counterweight.

Cetop 3 (NG6) Counterbalance Valve available here! We are global hydraulic specialists. Chat online now to one of our experts for more information.

In this lesson we'll examine the last remaining member of the pressure control valve family known as a counterbalance valve commonly used to control the desc

Describe the schematic symbol for an external drain. Identify customary locations for the 5 main pressure control valves. Describe a counterbalance valve using 

Counterbalance valve VBST-10A 04.59.16 - X - 85 - Z . Vented guided poppet type; Common cavity, Size 10; Maximum operating pressure 350 bar; Maximum flow 60 l/min; Additional information . Data sheets. Additional Technical Data. Common cavity. Open all Close all. Addresses. Subject to change, status 2020-10-06 12:21:10

VBSO-SE05.41.01 - X - Y - Z. Single, standard configuration. Ports G 1/2 - G 3/4. Maximum operating pressure up to 3050 psi. Maximum flow 37 gpm. Data sheets. Additional Technical Data. Values in the US customary unit system are converted and rounded values. In case of doubt, only metric values are valid.

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.

Counterbalance valves · BRAND · Flow l/min - (US gpm) · Max. Pressure bar - (psi) · Ports.

A counterbalance valve can easily be described as a pilot operated relief valve with a free flow check. The relief valve within the counterbalance valve provides the critical function of

Counterbalance Valves. Relief Valves - Differential Area. Relief Valves - Direct Acting. Cartridge Bodies. 2-Way Manifolds. 3-Way Manifolds. 3-Way T-Series Manifolds. Cavity Plugs. Product Customization. Vonberg Valve, Inc. 1380 Norwood Avenue Itasca, IL 60143. P: 847-259-3800 F: 847-259-3997.

Accept and Enable. Manage Preferences. Demonstration on how to properly set a counterbalance valve on a test stand. See all Videos.

The counterbalance valve offsets the potential energy of the weight on the rod end of a cylinder. The 15,000-lb force in this figure cannot do useful work when using an internally piloted counterbalance valve. (See Figures 5-13 through 5-15 for energy loss and heat generation for different types of counterbalance circuits.)

Danfoss offers dual counterbalance valve HIC . Find mode codes and 3D model codes.

Our family of M-valve Load-Reactive Load Control valves offers improved modulation performance. 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 built-in dampening device smooths the opening of the valve while allowing the valve to close quickly.

Parker's CB series counterbalance valve operates as a pressure relief valve. The setting pressure is lowered by the pressure in the inlet line. The return flow from the actuator is piloted and controlled by the inlet flow to the actuator, ensuring a cavitation-free lowering load.