Butterfly Valve, Double Eccentric, Flanged Type, F4
Corrosion protection of the body parts: Protection in accordance with quality assurance RAL-5015 or
RAL-5005, at least 250 μm, epoxy coating, each “blue” coloured. Other coating options are available,
please contact us for advice.
Valve actuators: 1- Worm gearboxes with handwheel, 2- Spindel gearboxes with handwheel, 3-
Electric rotary actuators, 4-Pneumatic Actuators, 5- Hydraulic Actuators
Product group : Butterfly Valves (BV)،
Fields of application : Water treatment، Water Distribution network، Water transmission، Fire protection network، Dams and hydropower، Irrigation، Industrial applications،
Medium : Raw water، Drinking water، Industrial Wastewater، Sea water،
Body : Ductile Cast Iron، Carbon steel, low alloy steel، Stainless Steel، Nickel Aluminum Bronze، Aluminum Bronze ،
Disc : Nickel Aluminum Bronze، Aluminum Bronze، Ductile Cast Iron، Carbon steel, low alloy steel، Stainless Steel،
Sealing : NBR، EPDM،
Temperature °C : Up to 70
Size (mm) : 100 - 3000
Pressure (bar) : 6 - 64
Description :Design Standard: DIN EN 593 (DIN3354)
Face to Face Dimension: DIN EN 558 -1 series 14 (DIN 3202 – F4)
Flange Dimension: DIN EN 1092-2 (DIN2501)
To get further information about valves’ installation, operation and maintenance, please contact our technical department.
Butterfly Valve, Double Eccentric, Flanged Type F5 with Bypass
This valve is equipped with a bypass system and an on/off valve. bypass system is used for connecting both side of the disk for special applications . The usual diameter of bypass valve is approximately 1/10 of nominal diameter of main valve . For installation of bypass the face to face of the main valve is increased.
Application:
this system (bypass) is used for making equal pressure in both side of the disc so the main valve can be operated with minimum force for opening and closing . this system can be used for filling up piping systems. As long as the pipeline system is protected from water Hummer phenomenon and the pipeline will fill up gradually and at the same time air will be ejected from pipeline (through air valves) without any disturbance and minimum sound.
Operation:
Opening the valve: to start operation when the main valve and bypass valve are in closed position first open the bypass valve, and after opening the by pass valve the main valve will be opened. For transferring the liquid during operation time, both valves (main and bypass) should be open. Closing the valve: When system is not in use or the system has to be shut down, first main valve should be closed and then by pass valve will be closed.If the above procedure takes place, difficulties with air and water hummer will be reduced enormously.
Product group : Butterfly Valves (BV)،
Fields of application : Water Distribution network، Water transmission، Industrial applications، Water treatment،
Medium : Drinking water، Sea water، Raw water،
Body : Aluminum Bronze ، Ductile Cast Iron، Nickel Aluminum Bronze، Stainless Steel، Carbon steel, low alloy steel،
Disc : Aluminum Bronze، Carbon steel, low alloy steel، Ductile Cast Iron، Stainless Steel، Nickel Aluminum Bronze،
Sealing : NBR، EPDM،
Temperature °C : Up to 70
Size (mm) : 400 - 1400
Pressure (bar) : 6- 40
Description :
To get further information about valves’ installation, operation and maintenance, please contact our technical department.
Butterfly Valves,Short Body
Butterfly Valve, Double Eccentric, F4 with B-Plan Disc
Fields of application : Water transmission، Industrial applications، Dams and hydropower، Water Distribution network،
Medium : Sea water، Raw water، Drinking water،
Body : Aluminum Bronze ، Stainless Steel، Carbon steel, low alloy steel، Ductile Cast Iron، Nickel Aluminum Bronze،
Disc : Stainless Steel، Carbon steel, low alloy steel، Nickel Aluminum Bronze، Aluminum Bronze،
Sealing : NBR، EPDM،
Temperature °C : Up to 70
Size (mm) : 100 - 3000
Pressure (bar) : 6- 64
Description :Design Standard: DIN EN 593 (DIN3354)
Face to Face Dimension: DIN EN 558 -1 series 14 (DIN 3202 – F4)
Flange Dimension: DIN EN 1092-2 (DIN2501)
To get further information about valves’ installation, operation and maintenance, please contact our technical department.
BV with lining
Fields of application : Industrial applications، Water transmission، Sewage and Treatment،
Medium : Wastewater، Sea water،
Body : Carbon steel, low alloy steel، Ductile Cast Iron،
Disc : Stainless Steel، Nickel Aluminum Bronze، Ductile Cast Iron، Carbon steel, low alloy steel،
Sealing : EPDM، NBR،
Temperature °C : Up to 70
Size (mm) : 100-3000
Pressure (bar) : 6 - 40
Description :Design Standard: DIN EN 593 (DIN3354)
Face to Face Dimension: DIN EN 558 -1 series 14 (DIN 3202 – F4)
Flange Dimension: DIN EN 1092-2 (DIN2501)
Lining: Ebonit
cornosion protect
Body : inside hard rubber coating
Disk : hard rubber coating
To get further information about valves’ installation, operation and maintenance, please contact our technical department.
MIRAB Butterfly valves are used for fluids such as raw water, drinking water, waste water, compressed air and neutral gases at temperatures up to 70° C and are designed with flow optimization to ensure minimum effects on the flow when the valve is open. This ensures that the whole system can be operated, with the lowest possible head loss coefficient. The valve discs of MIRAB butterfly valves are supported in the body with double eccentricity and Low friction bearings provide maximum radial support for higher shaft loads. The PTFE lined bearings having low coefficient of friction minimizes operating torque and reduces actuator size. They are slip-in place type, easy for assemble and disassembly.
Product Features:
Face to Face: DIN EN 558-1 series 15 (DIN3202-F5)
Product group : Butterfly Valves (BV)،
Product group : Butterfly Valves (BV)،