PTFE Lined High Performance Wafer Butterfly Valve (D71F)
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**Product Details:**
- **Model No.:** D71F
- **Working Temperature:** Medium Temperature (120°C < T < 450°C)
- **Seal Surface Material:** Metal Hard Sealed
- **Valve Body:** Cast
- **Application:** Industrial Use
- **Model:** D671f
- **Special Design:** Wafer Lug Type
- **Function:** On/Off
- **Lined Material:** PTFE Lined, PFA Lined
- **Fully Lined:** For Lined Body & Lined Disc
- **Semi-Lined:** For Lined Body or Lined Disc
- **Trademark:** Goole, ODM, OEM
- **Transport Package:** Plywood Case
- **Specification:** CE, API, ISO
- **Origin:** Wenzhou, Zhejiang, China
- **HS Code:** 8481804090
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**PTFE Lined High Performance Wafer Butterfly Valve (D71F)**
The PTFE Lined High Performance Wafer Butterfly Valve (D71F) is a rotating disc valve that operates around a fixed axis perpendicular to the flow channel. It is commonly used with pneumatic actuators, such as piston-type double or single-acting actuators, and is designed for on/off control or proportional regulation. This valve can be integrated with electric-gas valve positioners, electromagnetic valves, air filters, regulators, and limit switches to enable automation of fluid pipelines. It supports control of parameters like flow, pressure, temperature, and liquid level in various industrial applications.
**Key Features:**
1. **Pneumatic Operation:** The pneumatic butterfly valve has a small operating torque, making it one of the most efficient valves available. It opens and closes quickly using compressed air, driven by a rack and pinion mechanism that rotates the disc 0°–90°. Its compact design, lightweight structure, and low flow resistance make it ideal for use in automation systems.
2. **Electric-Gas Valve Positioner:** This device uses an electric signal and compressed air as power sources. It receives control signals (0–10mA or 4–20mA DC) and converts them into air pressure signals, allowing precise control of the disc angle (0–90°), which helps regulate flow more effectively.
3. **Electromagnetic Reversing Valve:** With AC 220V or DC 24V power and compressed air, this system enables fast two-position on/off control of the fluid medium.
4. **Pneumatic Actuator Design:** The actuator uses a piston and crankshaft mechanism, offering high torque output in a compact size. It features full waterproof sealing, high protection levels, and a mirror cylinder without oil lubrication. Bearings are self-lubricating, ensuring long-term reliability and minimal wear.
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**Technical Specifications Table:**
| DN (mm) | Rated Cv | Piston Pneumatic Actuator Model |
|---------|----------|----------------------------------|
| 80 | 200 | GT75 |
| 100 | 405 | GT110 |
| 125 | 620 | GT110 |
| 150 | 1150 | GT160 |
| 200 | 2030 | GT160 |
| 250 | 3150 | GT210 |
| 300 | 4550 | GT210 |
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**Wafer Lug FEP/PTFE/PFA Lined Butterfly Valve**
- **Nominal Diameter:** DN40 – DN400 (1½" – 16")
- **Face-to-Face:** EN 558-1 (DIN 3202), ISO 5752, API 609
- **Flange Accommodation:** DIN PN10 PN16, ANSI 150, JIS 5K JIS 10K
- **Top Flange:** ISO 5211
- **Temperature Range:** -40°C to +180°C (depending on pressure)
- **Operating Pressure:** Max. 10 bar (16 bar for special versions)
- **Differential Pressure:** Max. Δp 10 bar (16 bar for special versions)
- **Drive Type:** Hand lever, Gear box, Pneumatic actuator
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**Material List:**
| No. | Name | Material |
|-----|---------|-------------------------------------------|
| 1 | Body | Carbon steel, Stainless steel |
| 2 | Seat | PTFE, PCTFE, FEP, PFA |
| 3 | Disc | Stainless steel, carbon steel core with fluorine plastic coating |
| 4 | PTFE Ring | Viton |
| 5 | Spring | Si |
| 6 | Locator | Stainless steel |
| 7 | Wrench | Cast iron, cast aluminum alloy |
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**Dimension Table:**
| Nominal Diameter | NPS | L | D (0.6) | D (1.0) | D (1.6) | D1 (0.6) | D1 (1.0) | D1 (1.6) | D2 (0.6) | D2 (1.0) | D2 (1.6) | n-Фd (0.6) | n-Фd (1.0) | n-Фd (1.6) | f | D0 | H | Weight |
|------------------|-----|---|---------|---------|---------|----------|----------|----------|----------|----------|----------|------------|------------|------------|---|----|---|--------|
| 40 | 1½ | 43| 130 | 150 | 150 | 145 | 100 | 110 | 110 | 80 | 88 | 4-14 | 4-18 | 4-18 | 3 | 264|132| 2.5 kg |
| 50 | 2 | 43| 140 | 165 | 165 | 160 | 110 | 125 | 125 | 90 | 93 | 4-14 | 4-18 | 4-18 | 3 | 264|132| 3.5 kg |
| 65 | 2½ | 46| 160 | 185 | 185 | 180 | 130 | 145 | 145 | 110 | 106 | 4-14 | 4-18 | 4-18 | 3 | 290|155| 4.5 kg |
| 80 | 3 | 46| 182 | 200 | 200 | 195 | 150 | 160 | 160 | 125 | 123 | 4-18 | 4-18 | 8-18 | 3 | 290|160| 6 kg |
| 100 | 4 | 52| 205 | 220 | 220 | 215 | 170 | 180 | 180 | 145 | 150 | 4-18 | 8-18 | 8-18 | 3 | 290|165| 7.5 kg |
| 125 | 5 | 56| 235 | 250 | 250 | 245 | 200 | 210 | 210 | 175 | 172 | 4-18 | 8-18 | 8-18 | 3 | 290|190| 11 kg |
| 150 | 6 | 56| 260 | 285 | 285 | 280 | 225 | 240 | 240 | 200 | 198 | 4-18 | 8-23 | 8-23 | 3 | 290|215| 16 kg |
| 200 | 8 | 60| 315 | 340 | 340 | 335 | 280 | 295 | 295 | 255 | 252 | 4-18 | 8-23 | 12-23 | 3 | 320|275| 18 kg |
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**Ordering Instructions:**
1. Product type and name
2. Nominal diameter (DN)
3. Nominal pressure
4. Flow characteristics
5. Body material and trim
6. Medium type and temperature range
7. Inlet and outlet pressure (differential pressure)
8. Seal form
9. Accessories
**Contact Information:**
**Ms. Cathy**
Yongjia Goole Valve Co., Ltd.
Heyi Industrial Zone, Oubei, Wenzhou, 325105, China
Tel: +86-577-57781015
Fax: +86-577-67985602
Mob: +86 150 5759 6965
Web: www.chinavalve1.com
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