Diaphragm Accumulator Fluid Volume 20 cu in Vent Diameter 20 cu in Max Flow 26 gpm Max Pressure 2 300 psi Shell Material - Accumulators Steel Diaphragm Material - Accumulators Hydrin Diameter 3.74 in Overall Height 2.55 in Inlet Port Thread Size SAE #8 Hydraulic Fluid Port Dash Size -8 Pre-Charged No Operating Temp Range -40 to 176 Degrees F