Standard seamless, fixed‑type pressure vessel cylinders are the most commonly used standby cylinders in accumulator systems. SCHWERLL offers customers standard pressure vessels and cylinder banks designed for cyclic stress, with common capacities ranging from 20 L, 35 L, 40 L, 50 L, 75 L, and 100 L up to 500 L, and typical design pressures of 20 MPa, 31.5 MPa, 35 MPa, and other specifications.