Here you can find the online chart which let you easy adjust any flow or pressure valve using its settings range and the available number of turns.
Tag Archive: valve
- When use Pilot Operated Check valves?
- When use Counterbalance valves?
- Design advises for topic valves.
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First of all, Pilot Operated check valves are NOT a cheap solution of Counterbalance valves.
Yes, both of them have next the same benefits:
- Prevent a load from dropping in case of hose or tube failure.
- Prevent a load from drifting caused by directional control valve spool leakage.
- Leak-free load holding.
But each of them has the specific applications.
- Understanding the pilot ratio of the counterbalance valves
- Calculations the pilot pressure of the counterbalance valves for different applications
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Lower pilot ratios will increase system stability and provide better motion control. Therefore, the vast majority of counterbalance applications are satisfied with a 3:1 pilot ratio.
Higher ratios will be more efficient (reduce heat generation) but at the cost of stability and smooth motion control. This is why 10:1 pilot ratio valves, generally, should be avoided. But, sometimes, on motors high pilot ratios will provide adequate dynamic control.
Two areas work to open a counterbalance valve, the relief area (port 3) and the pilot area (port 1); the pilot area divided by the relief area equals the pilot ratio: