counterbalance valve

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

26/08/  · A counterbalance, or load-holding, valve is a mechanism typically located near the actuator that uses hydraulic pressure to keep a load from moving. Generally, these valves have

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.

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.

RSM10121 Counterbalance Valve SEN AIN V1: Download 1.03 MB ["SV"] RSM10121 Counterbalance Valve SEN AIN V1: Download 1.03 MB ["DA"] RSM10121 Counterbalance Valve

18/03/  · Learn how a counterbalance valve works! Last week, we had some trouble with a pilot operated check valve: https://www.youtube.com/watch?v=Frn3f1WZdLM. This w

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.

29/05/  · The counterbalance valve’s spool would then partially close, preventing an uncontrolled drop of the load. Pressurizing the line leading to the cylinder’s cap-end port also

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.

As the industry leader in counterbalance solutions, Sun Hydraulics offers more than 150 standard counterbalance models in a range of capacities, pilot ratios and configurations. The proven CB** family of valves leverages a proven poppet-and-piston design suitable for most general applications and provides precise, reliable load holding and motion control at an affordable price.

Counterbalance Valve With Test Harness. This example shows how to model, parameterize, and test a counterbalance valve. When you run the model, it generates a plot of the flow from the load port to the back port due to the relief action of the counterbalance valve. A counterbalance valve allows an upstream flow from the back port to the load

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. They help manage pressure created by impacts and loads to help stabilize loads, avoid equipment damage, and cope with hose failure and more. Stopping runaway loads

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

Learn how hydraulic counterbalance valves work. Understand the different types of valve that are available, their function and where they are used.

Important factors when specifying counterbalance valves are:- Line lengths; Trapped Air; Cylinder stick/slip; Setting the Valve 

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.

16/12/  · 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.

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

A counterbalance valve's function is to maintain a set pressure against the load to keep it from over-running. For very low flow, a counterbalance valve can also serve as a thermal relief valve. The counterbalance valve uses a pilot signal, usually from the inlet of the cylinder, to assist in opening a poppet. A pilot assist makes the

A counterbalance valve (also called a brake, holding and/or overcenter valve) is a normally closed-pressure control used to oppose the pressure created by a load. They are typically either internally piloted or internally and externally piloted.

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

Description. 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.

Counterbalance valves are used to prevent oil from leaving a cylinder that is holding a load. Without the counterbalance valve, the load would move in an uncontrollable manner if oil pressure is lost for some reason. In a sense, they act as adjustable pressure relief valves and are often used where line pressures can spike.

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 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.

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

Counterbalance valves are pressure control valves type relief valves, usually used in conjunction with hydraulic cylinders to hold the safe 

07/03/  · A counterbalance valve would allow the downward movement of the load supported by a cylinder only when the system pump is operating. The force generated by the system

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

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 

loads less pilot pressure to open the counterbalance valve, helping to improve stability and reverse flow check valves are suitable for counterbalancing.