Piston Type Accumulator PTA

Piston Type Accumulator



Fluids are practically incompressible and cannot therefore store pressure energy. The compressibility of a gas is utilized in hydro-pneumatic accumulators for storing fluids.

The floating piston type accumulator consists of a fluid section and a gas section with the piston acting as a gas proof screen. The gas section is precharged with dry nitrogen gas. The fluid section is connected to the hydraulic circuit so that the piston accumulator draws in fluid when the pressure increases, thus compressing the gas. When the pressure drops, the compressed gas expands and forces the stored fluid back into the circuit.

The two end caps of the Leutert piston type accumulator are sealed with double o-ring seals and back-up rings. The piston has a single O-ring seal and a slider ring and is designed to minimize friction and reduce pressure load. 1/4" NPT female port threads are machined into the end caps of the 10,000 psi cylinders, and 7/16" NPT female port threads into the 15,000 psi cylinders. Both end caps are held in place by strong circlips.



Volume: 700 cm³, other on request
Weight: 35.3 lbs (16 kg)
Material: stainless steel, resistant to H2S and CO2, other on request
Material o-rings: Viton, others on request
Operating pressure: 10,000 psi (690 bar) standard, other on request
Operating temperature:  

-4 °F to 300 °F (-20 °C to 150 °C), other on request

Liquid port, gas port: up to 10,000 psi: 1/4” NPT female
up to 15,000 psi: 7/16” NPT female
Certificates: up to 10,000 psi: TPED & Hydrostatic Certificate
up to 15,000 psi: Hydrostatic Certificate, PED on request