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FPG-CBV
Counter Balance Valves
Counterbalance Valve Setup — StandardRelief setting: Set the valve high enough to stop motion at the maximum expected actuator pressure. As a rule of thumb, use 1.3 × maximum load pressure (e.g., 180 bar load → set ≈ 234 bar).Pilot ratio (varying loads): Use low ratios (3:1 or 4.25:1) when loads vary widelyPros: stable, precise control. Cons: higher pilot pressure, lower efficiencyPilot ratio (constant loads): Use high ratios (8:1 or 10:1) when loads are relatively constantPros: lower pilot pressure, faster response, higher efficiency. Cons: less stability/precision with changing loadsSizing: Do not oversize. Counterbalance valves need some pressure drop to operate correctly; there’s no “too much drop” operating limit for these valvesPlacement: Install the valve at or near the actuator to maximize load-holding protection if a hydraulic line failsCircuit compatibility: Do not use counterbalance valves with closed-center directional control valves; trapped pressure between the DCV and actuator can pilot the valve open and cause unintended load motion
| Part Number | Thread (size) | Pilot (ratio) | Stock | Price | Order Qty Tap +/- to add |
|---|---|---|---|---|---|
| FPG-CBV-06 | G3/8 | 4.25 : 1 | 10 | $180.25 | |
| FPG-CBV-08 | G1/2 | 4.25 : 1 | 10 | $210.35 |
