Our SD671S pneumatic plastic butterfly valve features a simple structure, compact size, light weight, minimal material consumption, small installation dimensions, quick opening and closing, 90-degree reciprocating rotation, and low driving torque.Used for cutting off, connecting, and adjusting media in pipelines, it features excellent fluid control properties and sealing performance. When the pneumatic plastic butterfly valve is fully open, the thickness of the butterfly blade acts as the resistance to the medium flowing through the valve body, resulting in minimal pressure drop through the valve, thus exhibiting good flow control characteristics. The pneumatic plastic butterfly valve and UPVC pneumatic butterfly valve are highly corrosion-resistant and are applied in various fields, such as potable water and drinking water pipeline systems, drainage and sewage pipeline systems, saltwater and seawater pipeline systems, and acidic, alkaline, and chemical solution systems across multiple industries, with their quality recognized by a wide range of users. The key features of the pneumatic plastic butterfly valve are as follows:
The appearance and structure are compact and aesthetically pleasing.
(2) The body is lightweight and easy to install.
(3) High corrosion resistance, wide application range.
(4) Material is hygienic and non-toxic.
(5) Wear-resistant, easy to disassemble, and simple to maintain.

Pneumatic Plastic Butterfly Valve - Technical Specifications
| Nominal Bore Size | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 |
|---|---|---|---|---|---|---|---|---|---|
| Nominal Pressure | PN1.0、1.6MPa | ||||||||
| Connection Type | Clamping type | ||||||||
| Sealing Material | FPM、EPDM、NBR | ||||||||
| Applicable Temperature | 0~+60℃ | ||||||||
| Valve body material | UPVC、CPVC、PP | ||||||||
| Valve core material | UPVC、CPVC、PP、PTFE | ||||||||
| Applicable Medium | PVC-compatible food industry chemical solvent | ||||||||
| Actuator accessories | GT, AT, AW Series Double-acting and Single-acting Pneumatic Actuators | ||||||||
| Control Method | Two-position switch control, 4-20mA analog signal control | ||||||||
Pneumatic Fluorine-lined Butterfly Valve Actuator Specifications
| Actuator Model | GT, AT, AW Series Double-acting and Single-acting Pneumatic Actuators |
|---|---|
| Supply Pressure | 0.4~0.7MPa |
| Gas Source Interface | G1/4"、G1/8"、G3/8"、G1/2" |
| Ambient Temperature | -30~+70℃ |
| Mode of Operation | Single-acting actuator, double-acting actuator |
| Available accessories | Locators, solenoid valves, air filter regulators, hold-open valves, limit switches, position transmitters, handwheels, etc. |
Utilizing the latest series of pneumatic actuators, featuring double-acting and single-acting (spring return) types, with gear rack transmission for safety and reliability; large-bore valves are equipped with series AW pneumatic actuators and fork-type transmission, featuring reasonable structure, high output torque, and available in both double-acting and single-acting versions.
1. Gear-type double piston, featuring high output torque and compact size.
2. Cylinders are made of lightweight aluminum alloy, featuring an attractive appearance.
3. Manual operation mechanisms can be installed at the top and bottom.
4. RACK AND PINION CONNECTION ADJUSTABLE OPENING ANGLE AND NOMINAL FLOW RATE.
5. Actuators are available with telemetric feedback signals and various accessories for automated operation.
6. The IS05211 standard connection facilitates the installation and replacement of the product.
7. The adjustable set screws at both ends allow the standard product to have a ±4° adjustable range at 0° and 90°, ensuring synchronization accuracy with the valve.
Pneumatic Plastic Butterfly Valve - Parts Material
| Part Name | Material Name |
|---|---|
| Valve body | UPVC、PPR、PVDF |
| Dial plate | UPVC、PPR、PVDF |
| Valve seat | EPDM、FPM |
| Valve Stem | 2Cr13、45# |
| O-ring | EPDM、FPM |
Pneumatic Plastic Butterfly Valve - Connection Dimensions
| Bore Diameter (mm) | inches (″) | Dimensions (mm) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Length | D | D1-ANSI | D1-JIS | D1-DIN | H | N-d-ANSI | N-d-JSI | N-d-DIN | ||
| 50 | 2 | 43 | 56.5 | 120.39 | 120 | 125 | 103 | 4-19 | 4-19 | 4-18 |
| 65 | 2 1/2 | 47.5 | 70 | 139.44 | 140 | 145 | 113 | 4-19 | 4-19 | 4-18 |
| 80 | 3 | 47.5 | 79 | 152.4 | 150 | 160 | 115 | 4-19 | 4-19 | 4-18 |
| 100 | 4 | 57.2 | 103 | 190.5 | 175 | 180 | 135 | 8-19 | 8-19 | 8-18 |
| 125 | 5 | 66 | 130 | 216 | 210 | 210 | 165 | 8-22 | 8-23 | 8-18 |
| 150 | 6 | 74 | 151 | 241.55 | 240 | 240 | 177 | 8-22 | 8-23 | 8-23 |
| 200 | 8 | 87.5 | 200 | 298.5 | 290 | 295 | 210 | 8-22 | 8-23 | 8-23 |
| 250 | 10 | 110 | 255 | 362 | 355 | 350 | 240 | 12-25 | 12-25 | 12-23 |
| 300 | 12 | 129 | 311 | 432 | 400 | 400 | 297 | 12-25 | 12-25 | 12-23 |
Pneumatic Plastic Butterfly Valve - Product Selection
(1) Valve Body Parameters: Nominal Diameter, Working Pressure, Process Medium, Application, Valve Body Material, and a series of other parameters.
(2) Actuator Parameters: Actuator Type, Control Method, Control Signal (4-20mA, 1-5V), Operation Mode (Air-Open, Air-Shut)
Please provide as detailed the technical specifications as possible, which will facilitate our production and technical team in accurately selecting the right model for you. Should you have any questions, feel free to call us, and we will strive to offer you excellent service!































