Butterfly valves are used to close and open the flow, regulate the flow of fluid inside the pipeline, simple structure and quick control, 90° control angle. The valve has many advantages compared to other types of valves, especially when the valve is up to DN600 in size, the butterfly valve will have a small mass, light weight, and save space compared to other types of valves.

 

Body material: Stainless steel ASTM A351 CF8M

Disc material: Stainless steel ASTM A351 CF8M

Shaft material: Stainless steel ASTM AA182 F316

Seat material: Stainless steel INCONEL 718

Working temperature from -50°C to 350°C

Operation: Lever, handwheel, electric motor, pneumatic motor, hydraulic motor.

 

 Nominal valve sizes from DN40 to DN600

 Valve width dimensions according to standards

                                                           EN 558 Series 20

                                                           ISO 5752 Series 20

                                                           API 609 Table 1

                                                           BS 5155 Series 4

 Flange connection                         PN10 PN16 PN25 PN40, ANSI150 ANSI300

 Control head flange                       ISO 5211

 Check for leaks                               ISO 5208, zero leakage API 598

  PED                                                  2014/68

  Atex                                                 2014/34/UE – Atex II 2GDc

 TA-LUFT và ISO 158448                TA-LUFT, ISO 15848 

 SIL                                                     IFC 61508 

                                                           SIL 2

                                                           SIL 3

 Tightness                                         Class V

                                                           ISO 5208 (Rate AA)

 

Advantage: 

- Valve tightness Class V, ISO 5208 (Rate AA)

- The product is applied in many different fields

- Sealing ring made of INCONEL 718

- Fast opening and closing process

- No fluid stagnation inside the valve cavity

- Compact design, easy installation

- Valve body is easy to disassemble and maintain

- Flexible operation with different controllers (handle, gearbox, pneumatic, electric, hydraulic head...)

- Low operating torque

- Small pressure loss design structure

 

Application:

 Irrigation                                                                                 Paper mill                                                      Mining

 Industrial wastewater                                                          Chemical industry                                        Air conditioning

 Fire protection system                                                         Oil and gas industry                                    Metallurgy

 Cooling tower                                                                        Thermal power                                               ....

 Food processing plant                                                         Shipbuilding industry

 

Flow coefficient (Cv): Cv = 1.16 x Kv:

 In which, Kv is the amount of water flowing through a valve (m3/h) with a pressure difference of 1 bar at 20oC

 The flow rate will increase linearly with the valve opening, as shown in the following chart:

 

                                                            

 

Working pressure temperature table:

 

                                       

 

Valve size:

 

                             

 

Manual open and close control valve:

 

   

 

Pneumatically operated opening and closing control valve:

 

     

 

Electrically operated control valve:

 

    

 

Linear control valve % (4-20mA signal):