HYDAC INTERNATIONAL GmbH
HYDAC INTERNATIONAL GmbH
66280 Sulzbach/Saar
Germany
Phone: +49 (0) 68 97 509-01
Email: info@hydac.com
Website: www.hydac.com
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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 Frictionmore
Unit of Measure

Specifications

Industry Standards/Certifications

 ASME

Type

 Repairable Piston Accumulator

Style

 Threaded

Connection Type

 SAE (ANSI B1.1)

Seal Material

 NBR/PUR (-22 to 180F)

Medium

 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

 Carbon Steel

Series

 SK350

Short Description

 Piston Accumulators Series SK350

Operating Temperature [Min]

 -30 ºC-22 ºF

Operating Temperature [Max]

 80 ºC180 ºF

Connection Size

 SAE#20

Operating Pressure [Min]

 0 bar0 psi

Operating Pressure [Max]

 210 bar3000 psi

Connection Gender

 Female

Volume Capacity

 5 gal20 L

Pre-Charged Pressure

 0 bar0 psi

Repairable

 Repairable

Rechargeable

 Threaded gas connection

Valve Material

 Carbon Steel

Model Code Description

 SK350-20/3218S-210ACL-ACF-18BH

Dimensions

Diameter

 180 mm

Height

 43.4 in1102 mm

Application

Application

 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.