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**Double Flange Type Concentric Butterfly Valve**
**Model No.:** W-002
**Work Pressure:** Low Pressure (Pn < 1.6MPa)
**Working Temperature:** Normal Temperature (-40°C < T < 120°C)
**Material of Seal Surface:** Soft Sealed
**Valve Body:** Casting
**Standard:** API609
**Application:** Industrial, Water, and Household Use
**Size:** DN40 - DN1000
**Trademark:** TFW
**Transport Package:** Wooden Case
**Specification:** CE
**Origin:** Tianjin, China
**HS Code:** 84818040
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**Product Description:**
The Double Flange Type Concentric Butterfly Valve is a high-performance solution designed for a wide range of industrial applications. It is ideal for use in water supply systems, chemical processing, and general fluid control. The valve is engineered to provide reliable sealing, smooth operation, and long service life under various operating conditions.
**Specifications:**
- **Size:** DN40 – DN1000
- **Nominal Pressure:** PN10/16, 150-300LB
- **Working Temperature:** -15°C – 135°C
- **Suitable Mediums:** Chemicals, air, water, steam, oil, acids, salts, etc.
**Standards:**
| Design Standard | API609, BS EN593, GB/T12238 |
|----------------|----------------------------|
| Face to Face | API609, DIN3202, ISO5752, BS5155 |
| Flange Drilling| DIN2501 PN10/16, ANSI 125/150, BS4504, JIS, 5K10K |
| Top Flange | ISO5211 |
| Test Inspection| API598 |
**Materials:**
| Component | Material Options |
|----------|------------------|
| Body | Cast Iron, Ductile Iron, WCB, Stainless Steel |
| Disc | Ductile Iron, WCB, Stainless Steel, AI-Bronze |
| Stem | Stainless Steel, Carbon Steel, Monel |
| Seat | EPDM, NBR, PTFE, VITON |
| O-ring | EPDM, NBR |
| Bushing | PTFE, Bronze |
**Applications:**
This butterfly valve is widely used in chemical plants, power stations, water treatment facilities, and other industrial environments where reliable flow control is essential. Its versatile design allows it to handle a variety of media including chemicals, air, water, steam, oil, acids, and salts.
**Features:**
- **Lightweight and easy to install and maintain**
- **Quick 90° on/off operation with minimal torque**
- **Excellent regulation performance with a linear flow curve**
- **Long service life, capable of withstanding tens of thousands of operations**
- **Bubble-tight sealing with no leakage under pressure testing**
- **Available in multiple materials to suit different media and environments**
**Why Choose Us?**
- **Competitive pricing** while maintaining high-quality standards
- **Over 20 years of manufacturing experience**
- **Factory located in Jinnan District, Tianjin, China**, covering 1,000–3,000 square meters
- **Equipped with advanced production equipment and certified by ISO 9001:2000 and CE**
- **Diverse product range** including soft-seated butterfly valves, gate valves, strainers, check valves, and more
**Our Products:**
We specialize in the production of high-quality soft-sealed butterfly valves, as well as other types of valves. Over the years, TFW has focused on optimizing its production base, efficient management platforms, strong R&D capabilities, and a dedicated foreign trade team. Our products are exported to the US, Canada, Europe, Japan, Australia, and other regions, with annual sales exceeding $10 million.
**Our Services:**
- **On-time delivery** of all orders
- **Custom logo printing** on the valve body
- **Custom color options** based on your requirements
- **Production of valves according to different international standards** for global markets
**Contact Us for More Information!**
[Image: China Manufacturing Cast Iron Pneumatic Flange Type Butterfly Valve]
[Image: China Manufacturing Cast Iron Pneumatic Flange Type Butterfly Valve]
[Image: China Manufacturing Cast Iron Pneumatic Flange Type Butterfly Valve]
[Image: China Manufacturing Cast Iron Pneumatic Flange Type Butterfly Valve]
[Image: China Manufacturing Cast Iron Pneumatic Flange Type Butterfly Valve]
[Image: China Manufacturing Cast Iron Pneumatic Flange Type Butterfly Valve]
Whether you're looking for a standard or custom solution, we are here to help. Contact us today to discuss your specific needs and get a tailored quote.