In order to complete the offer of solutions for tank regulation and control, which was restricted to the automatic
control valves series XLC 400, CSA has designed a float valve Mod. ATHENA PN 16. Thanks to its exclusive
technology ATHENA brings the concept of reliability and performance to the highest standards.
Design features
Athena is composed of:
– Body in GJS 500-7 with three ways, allowing the installation both with an angle or a globe pattern, containing
an interchangeable sealing seat and piston in stainless steel and a sliding bush in bronze.
– Cover in carbon steel or GJS 500-7 containing the float lever?s fixed pivot.
– Mobile block composed of the main shaft, obturator, gasket retainer and piston.
– The lever mechanism is obtained from a double rod in rolled steel (single rod for DN 50/65) which, by means
of stainless steel pivots, puts the shaft in communication with the float which imparts the movement allowing
the opening or closing of the valve.
– A large float in stainless steel AISI 304 is connected to the above mentioned rods by means of a stainless
steel pipe, onto which it exerts a vertical force.
Working conditions
– Max temperature 70°C;
– Max pressure PN 16 (please contact us for higher values);
– Flanged PN 16 according to UNI EN 1092-2 standard (other drillings on request).
Operating principle
Flanged to the incoming pipe and driven by a large float in stainless steel, the valve automatically controls the
water level inside the tank by cutting off the supply whenever it reaches the maximum level and reopens again
as soon as it drops.
Technical advantages
The ATHENA design is based on the concept of a perfectly balanced single seat.
This is obtained thanks to the upstream pressure acting both on the lower part of the piston and the upper part
of the obturator, yielding two forces equal in magnitude but in opposite directions and therefore compensating
each other.
The valve is only driven by the movement of the float which, thanks to the double rods lever mechanism, leads
the main shaft.
The internal cross sections have been designed to achieve a reduced passage to allow the discharge of large
volumes of water yet avoiding any sudden drop in pressure, reducing the cavitation effects and facilitating the
opening/closing of the valve itself.
The main benefits are:
– high sensitivity, perfect water tightness even with low pressure values;
– progressive movement of the obturator during opening and closing, meaning that transient effects are avoided;
– excellent performances with low head loss and reduced maintenance;
– working conditions that could engender lamination are avoided by using a gradual flow rate gasket retainer.
No Comments Found