Cast Steel and Cast Iron/Ductile Iron Butterfly Valves
Butterfly valves are essential components in industrial piping systems, offering reliable flow control and excellent sealing performance. The CS/CI BV model is a versatile option suitable for various applications including water treatment and industrial usage. This valve features a flange connection, auto-sealed design, and is available in low-pressure (PN < 1.6 MPa) configurations. The soft-sealed surface ensures minimal leakage and long service life.
The valve is manufactured in sizes ranging from 2" to 60", with options for metal or soft seats. It can be configured as either concentric or eccentric, providing flexibility in installation and operation. The driving mode is manual, with lever or gear operation options available. The structure is double-eccentric sealing, ensuring tight closure even under medium temperature conditions (120°C < T < 450°C).
Constructed from materials such as cast iron, ductile iron, carbon steel, and stainless steel, the valve offers durability and corrosion resistance. It comes in wafer, lugged, and double-flanged types, making it adaptable to different piping standards. The design follows API 609 specifications, ensuring compliance with international standards for manufacturing, testing, and dimensions.
Standard compliance includes:
1. Design and manufacture: API 609
2. Test and inspection: API 598
3. Face-to-face dimensions: API 609, ANSI B16.10
4. End flange dimensions: ANSI B16.5, B16.47 SERIES A & B, DIN, BS, JIS
5. Butt-welding end: ANSI B16.25
Specifications include:
1. Size: DN50 ~ DN4000
2. Class: 150LB to 600LB
3. Type: Wafer, lugged, flanged, center line/double eccentric/triple offset, metal or soft seated, high performance
4. Material: WCB, WCC, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CN7M, LCB, LCC, Duplex SS, Monel, Alloy 20, cast iron, etc.
5. Operation: Lever and gear operation
Description:
- Wafer type or lugged type
- Design and manufacture: MSS SP-67, API 609
- Test and inspection: API 598
- Flanged end: ANSI B16.1, BS4504, ISO 2084, DIN 2501
- Top flange: ISO 5211
- Center line butterfly valve
- Resilient seat
- Shaft: Round, double D, or square type
- Size: 2" ~ 32" (DN50 ~ 800)
- Working pressure: 1.0MPa / 1.6MPa / Class 125
- Operator: Lever, gear, electric, or pneumatic actuator
**Standard Materials of Parts:**
| **Part** | **Material** |
|----------------|------------------------------------------------------------------------------|
| Body | Grey iron, Ductile iron, Cast steel, Stainless steel |
| Disc | Ductile iron, Aluminum bronze, Stainless steel |
| Stem | Stainless steel |
| Bushing | Lubricated bronze, PTFE |
| Seat | BUNA, EPDM, Neoprene, PTFE, NR, NBR, Hypalon, VITON |
| Pin | Stainless steel |
| O-ring | BUNA, EPDM |
**Dimensions (in mm & inch) and Weight:**
| **Size** | **Inch** | **A** | **B** | **C** | **L** | **E** | **F** | **Kgs** |
|----------|----------|---------|---------|---------|---------|-----------|----------|---------|
| 50 | 2" | 161 | 80 | 42 | 32 | 57.15 | 12.6 | 2.5 |
| 65 | 2.1/2" | 175 | 89 | 44.7 | 32 | 57.15 | 12.6 | 3.2 |
| 80 | 3" | 181 | 95 | 45.2 | 32 | 57.15 | 12.6 | 3.6 |
| 100 | 4" | 200 | 114 | 52.1 | 32 | 69.85 | 15.7 | 4.9 |
| 125 | 5" | 213 | 127 | 54.4 | 32 | 69.85 | 18.92 | 7 |
| 150 | 6" | 226 | 139 | 55.8 | 32 | 69.85 | 18.92 | 7.8 |
| 200 | 8" | 260 | 175 | 60.6 | 45 | 88.9 | 22.1 | 13.2 |
| 250 | 10" | 292 | 203 | 65.6 | 45 | 88.9 | 28.45 | 19.2 |
| 300 | 12" | 337 | 242 | 76.9 | 45 | 107.95 | 31.6 | 32.5 |
| 350 | 14" | 368 | 267 | 76.9 | 45 | 107.95 | 31.6 | 41.3 |
| 400 | 16" | 400 | 298 | 86.5 | 51.2 | 158.75 | 33.15 | 61 |
| 450 | 18" | 422 | 318 | 105.6 | 51.2 | 158.75 | 38 | 79 |
| 500 | 20" | 480 | 349 | 131.8 | 64.2 | 185.75 | 41.15 | 128 |
| 600 | 24" | 562 | 440 | 152 | 70.2 | 215.9 | 50.65 | 188 |
| 700 | 28" | 624 | 520 | 163 | 72 | 254 | 55 | 284 |
| 800 | 32" | 672 | 591 | 188 | 82 | 254 | 55 | 713 |
This butterfly valve is ideal for use in industrial and water treatment applications, offering high performance, reliability, and compliance with global standards. Its robust construction and variety of material and size options make it suitable for a wide range of environments and operational needs. Whether you're looking for a standard or custom solution, this valve provides an efficient and cost-effective choice for your piping system.
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