PTFE Seal Butterfly Valve
Electric fluorine-lined butterfly valve Valve model: D971F46, D941F46, D971F4, D941F4
Diameter specification: DN50~ DN1200
Structural form: Centerline type (wafer type, flange type)
Valve body material: carbon steel WCB, stainless steel 304, 316, 316L, etc.
Nominal pressure: PN10, PN16 Applicable temperature: -20°C~ 180°C
Application scope: corrosive fluids and strong acid and alkali materials, etc.
Product features: good sealing performance, super corrosion resistance and wear resistance
Product Advantages
Valve shaft valve plate octagonal connection
Experiments have proven that the octagonal connection can more effectively ensure the consistency of the valve shaft and valve plate movements, and reduce the failure rate by more than 20%.
Explosion-proof pin design
Adopts explosion-proof pin design
Valve seat embedded design
The valve seat has a backless design and light torque, making it convenient for users to replace the valve seat by themselves.
Self-lubricating design
The butterfly valve is designed with a self-lubricating ring with friction coefficient on the valve stem. It can greatly reduce the friction of valve opening and closing.
Product Details
Powerful function
Intelligent, on-off type, with on-site local operation unit, various signal outputs, various voltages can be customized
ASD
Passed the withstand voltage test, F-class insulated motor, safe and guaranteed
Easy to use
No secondary maintenance required, 360° installation at any angle
Butterfly Valve Images
Fluorine lined butterfly valves are designed to adapt to corrosive environments with strong acids and alkalis, as well as the needs of multiple special fields such as petroleum, chemical, and food. The valve body is made of polytetrafluoroethylene, which has a strong anti-corrosion effect. Under normal conditions, it can replace stainless steel valve bodies and has a higher cost-effectiveness. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc shaped butterfly plate rotates around the axis, with a rotation angle between 0 ° and 90 °. When it rotates to 90 °, the valve is fully open.
1. Design specifications
Comply with standards such as GB/T 12238, API609, MSS SP-67, MSS SP-68, etc.
2. Driving method
Manual, worm gear and worm gear transmission, pneumatic Electric actuator: Input control signal (4-20mADC or 1-5VDC) Voltage: AC220V 380V
3. Structural form
(1) Center sealed butterfly valve
(2) Single eccentric sealed coal valve
(3) Double eccentric sealed butterfly valve (4) Triple eccentric sealing stamp valve
4. Work pressure Butterfly valves with nominal pressure PN<1.6MPa.
5. Connection method:
(1) Wafer type butterfly valve
(2) Flange butterfly valve
(3) Lug type butterfly valve
(4) Welding butterfly
Installation Steps Of Wafer Butterfly Valve
The wafer butterfly valve is one of the most common types of valves in industrial pipelines. The wafer butterfly valve itself has a relatively small structure. You only need to place the butterfly valve between the flanges at both ends of the pipe, and use stud bolts to pass through the pipe flange and the opposite end of the pipe. The clamp butterfly valve is locked to control the fluid medium in the pipeline. Wafer butterfly valve is particularly suitable for places with narrow space or short distance between pipelines. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small. Small, so it has better flow control characteristics.
1. As shown, place the valve between the two pre-installed flanges, making sure the bolt holes are neatly aligned.
2. Gently insert the four pairs of bolts and nuts into the flange holes, and tighten the nuts slightly to correct the flatness of the flange surface.
3. Fix the flange on the pipe using electric welding
4. Remove the valve
5. Completely weld the flange to the pipe
6. Wait for the welding joint to cool before installing the valve. Ensure that the valve has enough movement space in the flange to prevent the valve from being damaged
7. Correct the valve position and tighten the four pairs of bolts (be careful not to overtighten)
8. Open the valve, ensure that the valve plate can open and close freely, and then open the valve plate slightly.
9. Tighten all nuts in a cross-balanced manner
10. Confirm again that the valve can open and close freely. Note: Make sure the valve plate does not touch the pipe.
Before installing the wafer butterfly valve, it must be laid flat first. Remember not to bump it at will. After pulling it to the installation length during installation, it is not allowed to design the on-site pipeline without special permission. Disassemble the wafer butterfly valve at will, this is what we need to know before installation. At the same time, everyone also needs to know that the wafer butterfly valve can be installed in any position, but after the wafer butterfly valve is installed, it is necessary to lay the butterfly valve along the line and make a bracket for the wafer butterfly valve. Once the bracket is made, it is used It is strictly prohibited to remove the bracket during this time.
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