
www.eltfluid.com
For general conditions and terms of use see page 22.
This document is Elt Fluid property and therefore data or
technical specification can not be reproduced.
Eltfluid reserves the right to make modifications to the
product in the direction of improving the product.
MACH 30
20
HYDRAULIC FLUID:
We recommend the use of mineral-based oils with charac-
teristics and physical chemical properties suitable for the
use on mobile equipment and hydraulic systems.
Examples of the types that can be used:
MINERAL BASE OIL type HL (DIN 51524 part 1)
MINERAL BASE OIL type HLP (DIN 51524 part 2)
For any other use with Hydraulic ecolological or water-
based fluids please contact our technical department.
WORKING TEMPERATURE:
Our products are designed to operate at fluid tempera-
tures between -20°C to +80°C while the ambient tempera-
ture range can go from -30°C to +60°C.
For details and conditions outside these parameters,
please contact our technical department.
CONTAMINATION CLASSES:
ISO 4406: the norm is expressed with 3 numbers that will
determine the quantity of solid particles in 1 ml of fluid larg-
er than 4/6/14 microns.
NAS 1638: the norm is expressed by one number that de-
termines the number of particles of different sizes present
in 100 ml of fluid.
FILTRATION:
Our products are made from high strength materials ma-
chined with high precision and in many cases grinded,
therefore contamination of the system becomes the major
cause of problems relating to their operation.
Elt Fluid recommends an average level of filtration of the
hydraulic system equal if not exceed the following values :
Working pressure Nominal filtration Contamination classes
Suggested for valves working with a system pres-
sure equal or higher than 250 bar (3.625 psi):
10 µm ISO 4406: 19/17/14 NAS 1638: 8
Suggested for valves working with a system pres-
sure from 100 bar (1.450 psi) to 250 bar (3.625 psi):
15
µm ISO 4406: 20/18/15 NAS 1638: 9
Suggested for valves working with a system pres-
sure lower than 100 bar (1.450 psi):
25
µm ISO 4406: 21/19/16 NAS 1638: 10
VISCOSITY:
The viscosity classes are described in accordance to ISO
DIN standard, the values expressed in ISO-VG indicate that
the medium viscosity of the fluid at 40°C (mm -2/so cen-
tistokes cSt).
Elt Fluid for proper operation is recommending for proper
operation of all components a viscosity that can go from
15 cSt to 250 cSt.
SETTING OF THE VALVES:
Our products are designed to meet the needs of each in-
dividual customer, so we offer the possibility to customize
the settings using based on the needs customers.
All required values are setted with a max. input flow equal
to 4 l/min, all values and ranges stated in the catalog are
properly sized to work with large safety margins.
For information or to values other than those listed in this
catalog, contact the Technical Department.
TIGHTENING TORQUE:
To ensure optimum operation over time without incurring
in locking problems of the various internal components, it’s
necessary to respect, for each cartridge, the values of the
torques indicated on each product page.
Technical Specification