Hydroaccumulators AS have elastomer diaphragm which is partition between a gas and a liquid. The AS accumulators are more durable due to less deformation of the diaphragm in comparsion with the bladder hydroaccumulators. The membrane can be replaced.

Nominal capacity: from 0.02 to 10 dm³; maximum operating pressure: up to 400 bar.

The AS accumulators consist of two screwed together hemispherical shells which are made from carbon steel. The elastomer diaphragm is between two hemispheres with a metal stud which allows rapid and completely discharge of fluid. This metal stud eliminates the risk of diaphragm damage. Type of elastomer and inside coating determine allowable working fluids. The standard fluid is mineral-based oil but an accumulator can be adapted to operate with water, diesel fuel, gasoline or even ethylene oxide.

The diaphragm only changes position, the elastomer in fact works little. Due to the diaphragm and the metal stud response of an AS accumulator is faster than response of a bladder accumulator. Therefore the diaphragm accumulators are used in dynamic work conditions. These accumulators are characterized by good service life.

Feature overview:

• Capacity range: from 0.02 to 10 dm³;
• Maximum operating pressure: up to 400 bar;
• Charging the gas: with charging valve;
• Extreme operating temperature: from -20 to +80°C (standard);
• Mineral-based hydraulic fluids (standard).

Advantages:

• Excellent gas/fluid tightness;
• Long durability due to diaphragm only changes its position – elastomer works little;
• Can be adopted to suit wide range of fluids;
• Ability to diaphragm change;
• Fast work;
• Possibility of total and rapid discharge;
• Version for low temperature (from -40 to +100°C) available.