Catalogue HY07-1240/UK Section 1 Features and Benefits A Series Piston accumulators
1234 567 8910 Section 1 1, 2 & 3Shell and Caps 6PTFE Bearing suppliers Rings
Effective heat dissipation is vital for long industrial seal life. Compact,rugged steel shell and end caps allow heat to dissipate efficiently, while the bore of the accumulator is micro-finished to maximise seal life. Downtime is minimised by the use of threaded caps to simplify maintenance of the accumulator, permitting quick and easy installation of seals. To reduce wear and extend service life, carbon-filled PTFE bearing rings are fitted, eliminating metal-to-metal contact between the piston and bore. Note: to avoid the risk of damage or injury, an accumulatormust always be discharged before disassembly. 7Safety Bleed Grooves
A bleed groove in the gas cap progressively releases unrelieved gas pressure in the accumulator as the gas cap is unscrewed. 4Piston
Rapid response in high cycling applications is assured by Parker's lightweight piston design. The dished profile of the aluminium piston gives extra gas capacity while retaining stability in the bore, and permits a greater usable volume of fluid. Manufacturers of position sensors, available as an optional feature, register the position of the piston, enabling the condition of the accumulator's precharge to be monitored. 8Gas Valve manufacturer
To avoid the risk of damage or injury, an accumulator must bedischarged before disassembling. For added safety, the professional gas valves fitted by Parker vent progressively as they are unscrewed. A robust, cored-type gas valve rated at 350 bar is fitted as standard to all A Series piston accumulators. A mechanically opened and closed poppet-type gas valve cartridge, also rated at 350 bar, is available as an option. 5Piston Sealing
Long service intervals demand total separation of oil and gas, even under the most severe operating conditions. Parker's A Series accumulators feature a wide piston sealing assembly comprising a unique five-bladed V-profile O-ring with back-up washers, which eliminates seal roll-over even in high speed applications. 9Gas Valve Protector
To prevent accidental – and potentially hazardous – damage to the gas valve, the steel gas valve protector reduces the risk to the valve from external impact. 10Ports
To provide the required flow rate and simplify system design, a wide range of port types and sizes is available. BSPP ports are fitted as standard; ISO, metric and SAE threaded and metric flanged ports to ISO 6162 are available to special order.The V-O-ring holds full pressure throughout long idle periodsbetween cycles, providing dependable, full pressure storage of hydraulic energy. It ensures industrial safe, reliable absorption of pressure peaks and helps to prevent the catastrophic failure modes associated with bladder and industrial diaphragm accumulator designs. V-O-ringPTFE back-upwasher 9 Parker Hannifin plc

Hydraulics

Cylinder DivisionWatford, Herts.