**Lever Operated NBR Seat Cast Iron Lug Butterfly Valve**
**Basic Information:**
- **Model No.:** DN50-DN1200
- **Connection Form:** Wafer
- **Seal Form:** Force Sealed
- **Work Pressure:** Mid-Pressure (2.5MPa < Pn < 6.4MPa)
- **Material of Seal Surface:** Soft Sealed
- **Application:** Industrial, Water, and Household Usage
- **Body Flange Drilling:** ISO7005-2; EN1092
- **Color:** Blue or Custom
- **Transport Package:** Seaworthy Packing
- **Origin:** Tianjin, China
**Additional Specifications:**
- **Driving Mode:** Manual
- **Structure:** Center Sealing
- **Valve Stem:** Standard
- **Working Temperature:** Medium Temperature (120°C < T < 450°C)
- **Valve Body:** Cast Iron
- **Face to Face:** ISO5752, EN558-1
- **Medium:** Water, Steam, Oil
- **Trademark:** GHL
- **Specification:** ASTM, ANSI, API, DIN, JIS
- **HS Code:** 8481804090
**Features:**
1. Compact and lightweight design, easy to install and maintain, suitable for any location.
2. Simple and compact structure, allowing quick 90° on-off operation.
3. The disc features two-way bearing, ensuring a perfect seal with no leakage during pressure testing.
4. Flow curve tends to be linear, offering excellent regulation performance.
5. Available in various materials, suitable for different types of media.
6. Strong resistance to washing and brushing, ideal for harsh working conditions.
7. Center plate design reduces the torque required for opening and closing.
8. Long service life, capable of withstanding thousands of operations.
9. Suitable for both cutting off and regulating the flow of medium.
**Technical Data Table:**
| Size | DN50mm - DN1400mm |
|------|-------------------|
| Design Standard | API 609 / EN 593 |
| End Flange | DIN PN10/PN16, BS4504 PN10/PN16, ANSI Class 125#/Class 150# |
| Face to Face | ISO 5752 |
| Top Flange | ISO 5211 |
| Body | Ductile Iron / CF8 / CF8M / WCB |
| Disc | Ductile Iron / CF8 / CF8M / C95400 / C95500 |
| Stem | SS420 / SS431 / SS316 |
| Seat | EPDM / NBR / VITON |
| Actuator | Bare Shaft / Lever / Gearbox and Handwheel / Pneumatic / Electric |
| Coating | Epoxy / Nylon / PTFE |
| Pin | Monel / SS416 / SS431 |
| Suitable Medium | Water / Seawater / Sewage / Air / Foodstuff / Oil |
**Product Image:**
This butterfly valve is designed for reliable performance in a wide range of industrial applications. Its durable construction and versatile material options make it an ideal choice for systems handling water, steam, oil, and other common fluids. Whether you need a simple manual operation or more advanced actuation options, this valve can be customized to meet your specific requirements. With its long service life and ease of maintenance, it's a cost-effective solution for both new installations and system upgrades.
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