Counterbalance Valve 30PH-S60-4.5
Product Features
1. The maximum setting pressure is at least 1.3 times the maximum pressure caused by a load.
2. The desired range of backpressure should be present at port 2.
3. Reseat pressure is more than 85% of the desired pressure.
Product Specifications
| Product Model | Counterbalance Valve 30PH-S60-4.5 |
| Operating Pressure | Loading pressure max. 215 bar when setting pressure at 280bar |
| Flow | See Performance Chart |
| Internal Leakage | Max. 0.4 ml/min. at; ReseatReseat pressure > 85% of setting pressure; Factory pressure settings established at flow of 32.8 ml/min |
| Pilot Ratio | 3:1, max. setting should be equal to 1.3 times the load pressure |
| Temperature | -40 to 120°C |
| Fluids |
Mineral - based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 ssu).Installation: No restrictions |
| Cartridge | Weight: 0.20 kg. (0.44 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces.Seal: O-rings and back-up rings. |
Product Operation Symbol
One-Way Function
The Counterbalance Valve 30PH-S60-4.5 allows the flow from ② to ①, and blocks flow from ① to ② when the pressure of ① is lower than the check spring setting.
Relief valve action: The cartridge releases the flow from ① to ② when the pressure in ① exceeds the check spring's preset.
Pilot-Assisted limitation Function: When there is pilot-assisted pressure at port 3, the limitation function can be implemented by switching the opening degree from 1 to 2.
Performance/Dimension
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