This site uses cookies to enhance navigation. If you continue with your visit, you accept the use of cookies and privacy policy. Accept

FILTERS
         
TAMAÑO (DN) FAMILY (Family list) SIZE (size) PRESSURE (Pressure) RATING (Rating) CLASS (Valve class) SECTOR (Application sectors)
DN:
INCH:
05010015020025030035040045050060070080090010001100120013001400150016001700180019003500
024681012141618202428323640444852566064687276140
BAR:
PSI:
0246810121416182030405060708090100110120130200300400500
029588711614517420323226129043558072587010151160130514501595174018852900435058007250
CLOSE
 

Back

BUTTERFLY

Bieccentric Butterfly Valve with Counterweight

The MBC model FCA butterfly valve is mainly used in strained lines in hydraulic power stations or as a charge or discharge valve and for security purposes in turbines as a shut-off element.
It consists of a circular flanged body with a butterfly or disc as a shutting-off element. The disc is provided with a seal which is fixed to it by a ring in stainless steel material. It is a valve with double eccentricity in the disc. Due to this eccentricity, the friction between the seal and the seat is low and the disc presents a tendency to close the valve.
The most usual device to operate this valve is by means of a hydraulic actuator to open it and an external mechanical drive to close it. The mechanical operation is obtained by a counterweight that guarantees the shut-off in a case of emergency. The shut-off is also possible with the hydraulic actuator. With the installation of a by-pass, the pressure may be balanced upstream and downstream in order to ease the opening and closing operations. This by-pass consists of a pipe and two small valves: an automatic valve for control and a manual valve for maintenance. Optionally telescopic pipes are installed to help disassemble the valve.

DESIGN STANDARDDIN / AWWA
PTRESSUREPN6 / PN10 / PN16 / PN25 / PN40
SIZEDN400/16'' to DN2500/100''
MATERIALSBody: Carbon Steel / Stainless Steel
Disc: Carbon Steel / Stainless Steel
SEATEPDM / SS
OPERATION TYPEHydraulic Actuator
SECTORSHydro Power Plants and Dams
APPLICATIONSEmergency functions for Hydraulic power stations / Turbines, etc…
ACCESORIES & OPTIONSEmergency closing devices, Limit switches, Proximity switches, Solenoid valve, Filters, Emergency System, Junction box, Stem extension, By-pass, Dismantling Joints, Special Supports, Counter-weight, etc...

Special applications available under request

 
Related products

CUSTOMER AREA

Insert your username and password to access the customer area

 

If you are not customer of FCA, fill our registration form