API 609 Category B
Butterfly Valves, Double Offset, 28 Inch/DN700, Soft Seat, Gear Operation.
1862131 High-Performance Butterfly Valve
Design Standard: EN 593, API 609 Category B
Structure: Double Offset, Double Eccentric
Nominal Size: 28 Inch, DN700
Nominal Class: Class 150 LB, PN20
Seat Type: Soft Seat
Operation: Gear
Body Material: ASTM A351 CF8M, ASTM B148 C95800, Titanium, ASTM A890 5A, ASTM A890 4A, ASTM A216 WCB, ASTM A351 CF8.
Seat: RPTFE, PPL
End Connection: Double Flanged
Face to Face: API 609, EN 593
Test and Inspection: API 598, API 609
Trim Material: ASTM A351 CF8, ASTM A351 CF8M, ASTM A890 4A, ASTM A890 5A, ASTM B148 C95800, Titanium
1. Long lifespan for high-frequency operation (up to a million cycles).
2. Reduced torque for smoother operation.
3. Replaceable seat for easy maintenance.
4. Reliable tight sealing performance.
5. Superior control characteristics.
6. Bi-directional sealing under full pressure.
7. Fire-safe seat option available.
| Body Material: |
Carbon Steel, Stainless Steel, Duplex Steel, Aluminum Bronze, Titanium |
| Normal Diameter: |
1/2 Inch - 48 Inch (DN15 - DN1200) |
| Pressure Range: |
Class 150 LB - 300 LB |
| Working Temperature: |
-26°C to +120°C (180°C for PPL seat) |
| End Connection: |
Wafer, Lug, Flanged |
| Operation: |
Manual (lever, gear), Pneumatic Actuator, Motor Actuator |
| Seat Types: |
Available options include PTFE, RPTFE, PPL (for higher temperatures), and RPTFE+Metal (fire-safe). |
| Top Mounting: |
ISO 5211 top mounting is offered. |
| Operation Types: |
Choose from lever, gear, or pneumatic actuator. |
| Bosseal Valve Advantages: |
Our valves offer zero leakage, low torque, extended service life, low emissions, bi-directional sealing, and fire-safe performance. |
The double offset butterfly valve is a versatile and highly effective component widely used in pipelines for both isolation and regulation purposes. Its design makes it particularly well-suited for applications where frequent opening and closing are required. The double offset, or double eccentric, geometry of the valve ensures smooth operation and minimal wear, which is ideal for demanding environments.
Guarantees a tight seal, preventing any leakage and ensuring system integrity.
Designed for efficient operation with minimal force required, reducing actuator strain and energy consumption.
Built to withstand rigorous conditions and frequent use, providing extended reliability and performance.
Engineered to minimize emissions, contributing to a more sustainable and environmentally friendly operation.
Capable of providing effective sealing in both flow directions, enhancing versatility and functionality.
Equipped with fire-safe features to ensure reliable operation in high-risk environments.
This combination of features makes the double offset butterfly valve an excellent choice for a wide range of industrial applications.
