PUB_INMOTION_n31_MARZO_2017_Interno96pag_160_PlanciaLR

sistema idraulico; possibili trafilamenti a
causa della bassa viscosità dell’acqua che
richiede tolleranze di accoppiamento più accurate;
maggiore velocità del fluido che richiede
un’esecuzione particolarmente robusta
e rinforzata per resistere alle maggiori
forze del flusso e alle minori proprietà di lubrificazione
dell’acqua.
Tipiche applicazioni idrauliche “ad acqua”
sono l’industria dell’acciaio, della pressofusione
di leghe leggere, le applicazioni
Oil&Gas secondo le norme API (American
Petroleum Institute), gli impianti petrolchimici
e l’industria alimentare. Tuttavia, grazie
alle sue proprietà amagnetiche, l’acciaio
inossidabile può anche essere utilizzato
in specifiche applicazioni militari, per
esempio i sottomarini e i cacciamine
La nuova elettroidraulica in acciaio inox sta
accelerando la diffusione dell’idraulica “ad
acqua” nei settori del controllo del movimento
e dell’automazione. l
NEWS ARTICLE - hydraulics
Water Electrohydraulics
for Green Applications
Water electrohydraulics is a fluid motion technology that is spreading in several sectors: from
steel industry to light alloy die casting and oil & gas applications.
Atos has developed a whole range of stainless steel valves capable of fulfilling the most severe
critical issues linked with the use of water.
Water electrohydraulics is a fluid motion
technology based on uninflammable,
eco-compatible and non toxic fluids as 100%
pure tap water or specific HFC and HFA oil-in
water emulsions with minimum 80% water.
Atos has developed a broad range of stainless
steel valves with ISO 4401 subplate mounting
for compact system design and an easier
assembling and maintenance.
Directional, modular and proportional solenoid
l I servocilindri in
acciaio inox Atos sono
conformi alla normativa
ISO 6020/1 sono
disponibili in una vasta
gamma di taglie e
opzioni.
l Stainless steel
cylinders, ISO 6020/1
compliant, are available
in a wide range of sizes
and options.
InMotion
valves are strictly derived from Atos standard
range of industrial oil hydraulics valves (over
75% of component parts are standard) to
grant superior functional performances, and
expected life over 10 million cycles. Stainless
steel solenoids valves are also available in
explosion proof construction with multiple
certification according to European ATEX
94/9/CE, International IECEx and Eurasian
EAC. They are also available with cULus
l Le elettrovalvole direzionali, modulari e
proporzionali in acciaio inox Atos.
l Directional, modular, solenoid valves by Atos.
certification for North American standards.
Stainless steel cylinders with round heads with
counterflanges and ISO 6020/1 compliant, are
available in a wide range of sizes and options
including magnetorestrictive, potentiometric
and inductive built-in rod position transducers.
High resistance
in aggressive environments
Atos stainless electrohydraulics perform high
resistance in aggressive environments (>1,000
hours in neutral salt spray) and fully comply
with the most severe water fluid critical issues
such as: quick oxidization of the hydraulic
system; higher leakages rates due to the low
water viscosity demanding more accurate
coupling tolerances; higher fluid’s speed
requiring special rugged and reinforced design
to withstand the greater flow forces and the
lower water lubrication properties.
Typical “water” hydraulic applications are
steel industry, light alloy die castings, Oil&Gas
applications according to API norms (American
Petroleum Institute), petrolchemical and food
industry. Moreover, thanks to its non-magnetic
properties, stainless steel can also be applied to
specific military applications in the submarine
and minesweeper sectors.
New stainless steel electrohydraulics is thus
speeding up the diffusion of “water” hydraulics in
the motion control and automation markets. l
march 2017 l 13