Double Eccentric Lug
Butterfly Valve, 10 Inch/DN250, 300 LB, ASTM A890 5A Body, Gear Operation.
Valve Description
1862102 High-Performance Butterfly Valve
Design Standard: API 609 Category B, EN 593
Structure: Double Offset, Double Eccentric
Body Material: ASTM A890 5A, ASTM A351 CF8M, ASTM A216 WCB, ASTM B148 C95800, ASTM A890 4A, ASTM A351 CF8, Titanium.
Nominal Size: 10 Inch, DN250
Nominal Class: Class 300 LB, PN50
Seat Type: Soft Seat
Face to Face: API 609, EN 593
Operation: Gear
Seat: RPTFE, PPL
End Connection: Lug
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
Key Features
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.
Product Range
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
Operation: Manual (lever, gear), Pneumatic Actuator, Motor Actuator
Working Temperature: -26°C - +120°C (180°C for PPL seat)
End Connection: Wafer, Lug, Flanged
Low Emission and Anti-Blowout Stem Design
The stem packing is made from pre-compressed flexible graphite rings, with precisely controlled stem and stuffing box roughness to ensure lower torque and improved sealing. A live-loaded gland flange allows for easy adjustment of packing seal compression. The space ring and gland design provide enhanced safety by preventing stem blowout, ensuring reliable performance under high-pressure conditions.
ISO 5211 Top Mounting
