Piston Type Accumulator
Our Piston Accumulators are designed for heavy-duty, high-pressure and high-volume hydraulic applications where durability, precision, and long-term performance are critical. A machined piston separates the gas and fluid chambers, delivering excellent sealing efficiency, minimal gas diffusion, and stable pressure regulation. These accumulators are best suited for industrial systems requiring large oil volumes, long duty cycles, and extreme operating conditions.
Why Choose Dynamic Piston Accumulators
- Superior durability for high-pressure, high-volume, and long-cycle applications
- Precision piston design ensures excellent sealing and smooth operation
- Customizable dimensions including bore size, stroke, and pressure ratings
- Low gas permeation offering stable and reliable pressure control
- Built for harsh industrial environments with heavy-duty materials and coatings
Technical Specifications:
| Parameter | AA – ASME Bladder | ASLV – Large Volume Bladder | AM – Screwed Repairable (Diaphragm) | AMW-P – Non-Rechargeable Diaphragm | AMW-M – Rechargeable Diaphragm | APC – Piston Non-Repairable | AP – Piston Repairable | STD – Standard Bladder |
| Design | Seamless / Fabricated shell | Fabricated shell | Screwed shell, repairable | Welded shell, non-repairable | Welded shell, non-repairable | Floating piston, non-repairable | Floating piston, repairable | Seamless / Fabricated shell |
| Design Standard | ASME | EN-14359, ASME | EN-14359, ASME | EN-14359 | EN-14359 | EN-14359, ASME | EN-14359, ASME | EN-14359, ASME |
| Nominal Capacity | 1/6 – 15 Gallons | 150 – 575 Ltrs | 0.1 – 2.5 Ltrs | 0.075 – 1.4 Ltrs | 0.075 – 5 Ltrs | 0.1 – 8 Ltrs | 0.25 – 1500 Ltrs | 0.2 – 575 Ltrs |
| Max Pressure (PS) | 1000 – 15000 PSI | 16 – 35 Bar | 350 Bar | 40 – 250 Bar | 40 – 350 Bar | 250 Bar | 220 – 1000 Bar | 16 – 690 Bar |
| Test Pressure (PT) | 1.3 × PS | 1.43 × PS (PED), 1.3 × PS (ASME) | 1.43 × PS (PED), 1.3 × PS (ASME) | 1.43 × PS | 1.43 × PS | 1.43 × PS (PED), 1.3 × PS (ASME) | 1.43 × PS (PED), 1.3 × PS (ASME) | 1.43 × PS (PED), 1.3 × PS (ASME) |
| Temperature Range | −20°C to +80°C | −20°C to +80°C | −20°C to +80°C | −20°C to +80°C | −20°C to +80°C | −20°C to +80°C | −20°C to +80°C | −20°C to +80°C |
| Allowable Pre-Ratio (P2/P0) | 04:01 | 04:01 | 06:01 | 01:08 | 1 : 4 to 1 : 8 | 08:01 | 08:01 | 04:01 |
| Max Flow Rate | Up to 1000 LPM | — | — | — | — | — | — | Up to 1800 LPM |
| Fluid Viscosity Range | 10 – 400 cSt | 10 – 400 cSt | — | 10 – 400 cSt | 10 – 400 cSt | 10 – 400 cSt | 10 – 400 cSt | 10 – 400 cSt |
| Recommended Viscosity | 32 cSt | 32 cSt | — | 32 cSt | 32 cSt | 32 cSt | 32 cSt | 32 cSt |
| Fluid Contamination Class | ISO 4406: 21/19/16 | ISO 4406: 21/19/16 | — | ISO 4406: 21/17/14 | ISO 4406: 21/17/14 | ISO 4406: 20/18/13 | ISO 4406: 20/18/13 | ISO 4406: 21/19/16 |
| Body Material | Carbon Steel / SS | Carbon Steel / SS | Stainless Steel | CS / Low-Temp CS / SS | CS / Low-Temp CS / SS | Carbon Steel | CS / SS | Carbon Steel / SS |
| Bladder / Diaphragm / Piston | NBR / IIR / FKM / EPDM | NBR / IIR / FKM / EPDM | NBR / Viton / EPDM | NBR / ECO / FKM | NBR / ECO / FKM | Aluminium piston | Aluminium / SG Iron / SS piston | NBR / IIR / FKM / EPDM |
| Gas Side Connection | 5/8″ UNF, 1/4″ BSP, 5/16″ UNEF | 5/8″ UNF, 1/4″ BSP | 5/8″ UNF (M) | Dia 8 sealed | M28×1.5 (M) or 5/16″ UNEF | 5/8″ UNF / BSP | 5/8″ UNF / BSP | 5/8″ UNF, 1/4″ BSP |
| Fluid Side Connection | Female threaded / Flanged | Female threaded / Flanged | M18×1.5 (F), 1/2″ BSP | Female threaded / SAE | Female threaded / SAE | Female threaded | Female threaded / Flanged | Female threaded / Flanged |
| Paint | RAL-5010 | RAL-5010 | — | — | RAL-5010 | RAL-5010 | RAL-5010 | RAL-5010 |
| Type Code | AA | ASLV | AM | AMW-P | AMW-M | APC | AP | STD |
