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The piston accumulator series SK350 is HYDAC's most versatile series with a repairable design and large selection of options. The largest range of possible sizes, material construction, and other options are offered. Standard and Low Friction piston designs are available for superior performance and flow rates. Features of this series are: Bore Diameters from 2.4" ID to 19.3" ID, Sizes from 1 quart to 200 gallons, Largest range of possible sizes and material options, Standard and Low Friction piston designs available, Largest variety of gas and fluid port options, A variety of piston position sensor monitoring systems are available, ASME, CRN, PED/CE and other pressure code certifications are available.
Unit of Measure

Specifications

Industry Standards/Certifications

 N/A ASME

Type

 N/A Repairable Piston Accumulator

Style

 N/A Threaded

Connection Type

 N/A SAE (ANSI B1.1)

Seal Material

 N/A NBR/PUR (-22 to 180F)

Medium

 N/A PUR resistant to: Mineral Oils (HL and HLP), Non-flammable fluids from the HFA group, PUR not resistant to: Water and water-gylcol mixtures, Alkalis, Acids

Material

 N/A Carbon Steel

Series

 N/A SK350

Short Description

 N/A Piston Accumulators Series SK350

Operating Temperature [Min]

 N/A -30 ºC-22 ºF

Operating Temperature [Max]

 N/A 80 ºC180 ºF

Connection Size

 N/A SAE#12

Operating Pressure [Min]

 N/A 0 bar0 psi

Operating Pressure [Max]

 N/A 210 bar3000 psi

Connection Gender

 N/A Female

Volume Capacity

 N/A 15.85 gal60 L

Pre-Charged Pressure

 N/A 0 bar0 psi

Repairable

 N/A Repairable

Rechargeable

 N/A Threaded gas connection

Valve Material

 N/A Carbon Steel

Model Code Description

 N/A SK350-60/3218S-210 ACH-ACH-25H

Dimensions

Diameter

 N/A 250 mm

Height

 N/A 65 in1651 mm

Application

Application

 N/A Fluids are practically incompressible and cannot therefore store pressure energy. The compressibility of a gas (nitrogen) is utilized in hydraulic accumulators for storing fluids. HYDAC piston accumulators are based on this principle. A piston accumulator consists of a fluid section and a gas section with the piston acting as a gas-proof separation element. The gas section is pre-charged with nitrogen. The fluid section is connected to the hydraulic circuit so that the piston accumulator draws in fluid when the pressure increases and the gas is compressed. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit.