Accumulators and Safety Blocks
Bladder, diaphragm and piston accumulators with mounting clamps, charging kits and safety blocks, for energy storage, pulsation damping and emergency lowering.
Features
- Bladder types respond quickly and suit pulsation damping; piston types handle larger volumes and higher compression ratios.
- Pre-charge is nitrogen only, and it is set against the minimum working pressure of the circuit, not against the maximum.
- A charging and gauging kit is needed to check pre-charge, and pre-charge should be checked at a stated interval because it drops slowly.
- A safety block with isolation and manual dump allows the stored energy to be released before anyone works on the circuit.
- Emergency lowering circuits rely on accumulator capacity, so the volume is calculated from the cylinder's swept volume and the pressure available.
Specifications
| Figure | Typical range | Unit | Why it matters |
|---|---|---|---|
| Type | bladder / piston | decides response speed and usable volume | |
| Nominal volume | 1 - 50 | l | sets the stored energy available |
| Maximum working pressure | 250 - 350 | bar | has to exceed the circuit relief setting |
| Pre-charge pressure | 90 | bar | wrong pre-charge wastes capacity or destroys the bladder |
| Fluid port | G 1 female | fixes the mounting and pipework | |
| Safety block fitted | yes, with manual dump | required before anyone can safely open the circuit |