Product Description
Pneumatic Wafer-Type PTFE Butterfly Valve are the standard choice for pipeline applications. They feature a simple structure, low flow resistance, a flow characteristic that approaches a straight line, and prevent the accumulation of debris. Additionally, they are lightweight, easy to install, and require low operating torque. Pneumatic butterfly valves can be used both for shutting off the flow of media and for regulating flow rates. They are widely used in industries such as drainage, sewage, food processing, heating, gas, marine, hydropower, metallurgy, energy systems, and light industry and textiles.
Product Features
- Compact and lightweight, it is easy to assemble, disassemble, and maintain, and can be installed in any location.
- Simple and compact design, low operating torque, and rapid 90° rotation.
- The flow characteristics approach a linear relationship, and the control performance is excellent.
- The connection between the butterfly plate and the valve stem uses a pinless design, eliminating potential internal leakage points.
- The outer circumference of the butterfly disc features a spherical design, which improves sealing performance and extends the valve's service life.
- The seals are replaceable and provide reliable bidirectional sealing.
Product Specifications
Product Model | D671F-16Q |
Valve Body Material | Ductile Iron |
Valve Plate Material | Ductile Iron / 304 Stainless Steel |
Rubber-Lined Material | PTFE |
Cylinder Material | Aluminum Alloy |
Cylinder Type | AT Series Double-Acting |
Nominal Pressure | ≤1.6 MPa |
Applicable Media | Water, gas, oil, etc. |
Operating Temperature | ≤150℃ |
Product Size Guide

Nominal Diameter | L | D1 | C | B | A | D | Z-Φd |
DN40 | 42 | 110 | 72 | 232 | 147 | 71 | 4-Φ18 |
DN50 | 42 | 125 | 72 | 232 | 147 | 71 | 4-Φ18 |
DN65 | 45 | 145 | 90 | 257 | 168 | 83 | 4-Φ18 |
DN80 | 45 | 160 | 99 | 278 | 184 | 95 | 8-Φ18 |
DN100 | 52 | 180 | 111 | 303 | 210 | 103 | 8-Φ18 |
DN125 | 56 | 210 | 127 | 325 | 262 | 108 | 8-Φ18 |
DN150 | 56 | 240 | 137 | 356 | 273 | 122 | 8-Φ22 |
DN200 | 60 | 295 | 176 | 404 | 301 | 142 | 12-Φ22 |
DN250 | 68 | 355 | 208 | 468 | 400 | 152 | 12-Φ26 |
DN300 | 78 | 410 | 242 | 529 | 458 | 176 | 12-Φ26 |
DN350 | 78 | 470 | 263 | 619 | 525 | 206 | 16-Φ26 |




















