Dimensions and specifications of flange butterfly valves
1. Nominal diameter (mm) DN350-DN2600.
2. Nominal pressure PN6-PN16.
3. Maximum working pressure MPa0.6-1.6.
4. Sealing test pressure MPa0.66-1.76.
5. Strength test pressure MPa0.9-2.4.
6. Applicable media water and sewage.
7. Soft sealing medium temperature ≤65℃ Hard sealing medium temperature depends on valve material.
8. Medium flow rate ≤3M/S.
Supplementary instructions for flange butterfly valve models and sizes:
Flange butterfly valves are valves with flanges on them, and the two side flanges are connected with bolts on the pipeline flange. It needs to be installed in the diameter direction of the pipeline and has good flow control characteristics. The butterfly valve flange uses a composite valve seat because the sealing structure uses a composite valve seat, so it is not easy to be over-aged due to wear and external corrosive media, and can be used for a long time.
Features of flange butterfly valve
1. Small and light, easy to disassemble and repair, and can be installed at any position.
2. Simple and compact structure, small operating torque, 90° rotation and rapid opening.
3. Flow characteristics tend to be linear, and the adjustment performance is good.
4. The connection between the butterfly plate and the valve stem adopts a pin-free structure to overcome possible internal leakage points.
5. The outer circle of the butterfly plate adopts a spherical shape, which improves the sealing performance and extends the service life of the valve. It can maintain zero leakage after opening and closing under pressure for more than 50,000 times.
6. The seals are replaceable, and the seal is reliable to achieve two-way sealing.
7. The butterfly plate can be sprayed with a coating according to user requirements, such as nylon or polytetrafluoroethylene.
8. The valve can be designed as a flange connection and a clamp connection.
9. The drive mode can be selected as manual, electric or pneumatic.