EPE AS Series Manual

Hydraulic Symbol
Specifications
Material of Construction
Body : Carbon Steel / Stainless Steel.
Bladder : Nitrile(NBR) / Butyl (IIR) /
Connections
Gas Side : 5/8" UNF / 1/4" BSP /
Fluid Side : Female Threaded or
Paint-CS Accumulators : Externally painted in RAL-5010.
Description
A hydro-pneumatic accumulator is a device used
specifically for storage of liquid under pressure. As liquids,
for all practical purposes, are incompressible, this objective
is achieved by utilizing the compressibility of gases.
A flexible rubber separator i.e., bladder is fitted into the
accumulator shell.
An inert gas - nitrogen - is filled into the bladder through a
pressure valve to a pressure P . The bladder expands, filling
the entire volume V of the accumulator shell.
0
When the system pressure P is higher than the gas
precharge pressure P , the liquid enters the accumulator
0
and the bladder is compressed reducing the gas volume to
V .
1
Should the liquid pressure rise to P , the volume of gas
reduces to V with an attendant rise in pressure, thus
2
balancing the Liquid pressure.
A potential energy is now stored in the accumulator to be
utilised whenever needed.
Viton (FKM) / EPDM ....
others listed on ordering code.
5/16" UNEF/Vg8 / 7/8" UNF.
Others on request.
Flanged. Others on request.
Others on request.
0
1
2
Bladder Accumulator
Technical Data
Design
Max. Pressure (PS)
Test Pressure (PT)
Temperature range
Allowable pre.ratio (P /P ) : 4:1
2
Nominal capacity
Max. Flow rates
Fluid
Fluid Viscosity range
Recommended viscosity
Fluid contamination degree: Class 21/19/16
Certification
The EPE bladder accumulators are generally designed &
manufactured according to European directive. They can
also be supplied as per ASME or others on request.
Materials
In standard version, the shell is made of carbon steel and
painted on the outside with a coat of rust inhibitor; the
valves are made from carbon steel - phosphated. This
configuration is suitable for oils and non-corrosive liquids.
Options for shell in stainless steel / aluminium / titanium
alloy are available on request.
Shells Nickle plated / Rilsan coated
available on request.
1
Technical specifications subject to change.
Type : AS
: Seamless / Fabricated shell.
: 16-360 Bar.
: 1.43 x PS
: -20°C to +80°C (Standard)
0
: 0.2 to 575 Ltrs.
: Refer page 6.
: 10 to 400 cSt
: 32 cSt
according to ISO 4406:1999
or better on request.
or others are also