Electric PTFE Lined Butterfly Valve
Electric PTFE Lined Butterfly Valve (also known as corrosion resistant electric butterfly valve / electric PTFE lined butterfly valve) consists of an electric actuator and PTFE lined butterfly valve body. The butterfly valve uses a disc rotating together with the valve stem as the closure member to realize valve opening, closing and regulation. The electric PTFE lined butterfly valve adopts lining technology to coat thick polymer materials on wetted parts including valve body, disc and valve stem, featuring excellent anti-corrosion performance. The corrosion resistant electric butterfly valve can be applied to media of any concentration of acid, alkali, salt, oxidizing agent, reducing agent and organic solvent. It is an ideal product for shut-off and regulation equipment on pipelines and containers for gas, liquid and semi-fluid in chemical, petroleum, pharmaceutical, food, steel smelting, paper making, hydropower and other systems. It can replace gate valves, globe valves and other types of shut-off and regulating valves.
Electric PTFE Lined Butterfly Valve has the advantages of corrosion resistance, zero leakage and long service life. Electric PTFE lined butterfly valve is suitable for concentrated sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, various organic acids, strong acid, oxidizing media, high temperature dilute sulfuric acid, high temperature concentrated acetic acid, alternating acid and alkali, various organic solvents and other highly corrosive media.

Main Technical Parameters
| Valve Body | |
| Valve Body Type | Straight through cast valve |
| Nominal Diameter | DN50~1000mm |
| Nominal Pressure | PN1.0, 1.6 MPa |
| Flange Standard | JIS B220, JB/T79, ANSI B16.5-1981, GB/T9113, HG20594-97, HG20618-97, etc. |
| Connection Type | Flanged, Wafer |
| Bonnet Type | Integrated |
| Gland Type | Plate compression type |
| Sealing Packing | V-type PTFE packing, flexible graphite packing |
| Valve Trim | |
| Disc Type | Butterfly shape |
| Flow Characteristic | Linear |
| Actuator | |
| Power Supply | AC220/380V, 50/60Hz |
| Output Torque | 50N·M~2000N·M |
| Stroke Range | 0~90°, 0~360° |
| Operating Time | 15s / 30s / 60s |
| Protection Device | Overheat protection |
| Ambient Temperature | -30°~60° |
| Manual Operation | With attached handwheel |
| Limit | Dual limit: electrical and mechanical |
| Protection Class | IP-65 |
| Explosion Proof Class | ExdII BT4; Custom ExdII BT6 for special requirements |
| Position Measurement | Optional limit switch or potentiometer |
| Drive Motor | 8W/E |
| Cable Entry | PE1/2〞 cable gland |
Note: For detailed actuator parameters, please visit the electric actuator page.
Main Parts Material
| Part Name | Material |
| Valve Body & Base | Ductile cast steel, cast steel, stainless steel, full PTFE lined |
| Disc | Grey cast iron, ductile cast steel, cast steel, stainless steel, special materials, full PTFE lined |
| Sealing Ring | Various rubber, PTFE |
| Valve Stem | 2Cr13, stainless steel, full PTFE lined |
| Packing | V-type PTFE packing, flexible graphite packing |
Main Performance Index
| Nominal Diameter DN(mm) | 50~1000 |
| Allowable Pressure Difference(MPa) | ≤ Nominal Pressure |
| Stroke Range | 0~90° |
| Leakage Rate | Zero leakage |
| Basic Error | ±2.5% |
| Hysteresis | ±2.5% |
| Dead Zone | 1% (adjustable) |
Main Performance Specification
| Nominal Diameter DN(mm) | 50-1800 | |||
| Nominal Pressure PN(MPa) | 0.6 | 1.0 | 1.6 | |
| Test Pressure | Strength Test | 0.9 | 1.5 | 2.4 |
| Seal Test | 0.66 | 1.1 | 1.76 | |
| Low Pressure Air Tightness Test | 0.6 | 0.6 | 0.6 | |
| Applicable Media | Air, water, sewage, steam, gas, oil, etc. | |||

















