EPE AMW-0.07 Quick Start Manual

Hydraulic Symbol
Specifications
Material of Construction
Body : Carbon Steel-Painted or
Diaphragm : Nitrile(NBR) or
Diaphragm Plug : Plastic (Standard) or CS or SS.
Connections
Gas Side : M28x1.5(M) or Dia 8 or
Fluid Side : Female Threaded or
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., diaphragm is fitted into the
accumulator shell.
An inert gas - nitrogen - is filled into the diaphragm through
a pressure valve to a pressure P . The diaphragm expands,
filling the entire volume V of the accumulator shell.
0
When the system (circuit) pressure P is higher than the gas
precharge pressure P , the liquid enters the shell and the
0
diaphragm is compressed reducing the gas volume to V .
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.
Low Temp Carbon Steel or
Stainless Steel.
Epichlorohydrin(ECO) or
Viton (FKM).
Others on request.
5/16" UNEF/Vg8.
Others on request.
Combination Thread (M+F) or
SAE Ports. Others on request.
0
1
2
Technical Data
Design
Max. Pressure (PS)
Test Pressure (PT)
Temperature range
Permissible Pre. Ratio(P :P ): Refer page 4
Max. permissible
precharge pressure P
Nominal capacity
Fluid
Fluid Viscosity range
Recommended viscosity
Fluid contamination degree: Class 21/17/14
Construction
The accumulator, designed & manufactured according to
directive 2014/68/EU, consists of a pressure vessel on
which the gas connection is located at the top part, while
the fluid connection is in the lower part.
The body contains a flexible rubber diaphragm separating
hydraulic fluid and nitrogen. The diaphragm incorporates a
plug (in polymer, carbon steel or stainless steel), bonded to
the lower part which prevents its extrusion through the
hole of the liquid port.
The top and bottom portions of the Accumulator body are
welded to contain the diaphragm permanently within.
1
Gas Charging
Pre-loading and Checking Set type-PCM is used with
Version-M Gas Side Connection and type-PC for Version-V.
Accumulators with Version-P are non-rechargeable.
1
: Welded shell, non-repairable
: 40-350 Bar.
: 1.43 x PS
: -20°C to +80°C (Standard)
2 0
: 130 bar. However limitations
0-max
due to transport regulations.
: 0.075 to 5 Ltrs.
: 10 to 400 cSt
: 32 cSt
according to ISO 4406
or better on request.