RPTFE Seated Lug Butterfly Valve, A351 CF8, 12 Inch, 300 LB

Stainless Steel Butterfly Valve, RPTFE Seated, 12 Inch/DN300, Class 300 LB, Gear Operation.

Valve Description

1862103 High-Performance Butterfly Valve 
Design Standard: API 609 Category B, EN 593
Structure: Double Offset, Double Eccentric
Body Material: ASTM A351 CF8, ASTM A890 4A, ASTM A216 WCB, ASTM B148 C95800, ASTM A351 CF8M, ASTM A890 5A, Titanium.
Nominal Size: 12 Inch, DN300
Nominal Class: Class 150 LB, PN20
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
Operation: Manual (lever, gear), Pneumatic Actuator, Motor Actuator
Normal Diameter: 1/2 Inch - 48 Inch (DN15 - DN1200)
Pressure Range: Class 150 LB - 300 LB
Working Temperature: -26°C - +120°C (180°C for PPL seat)
End Connection: Wafer, Lug, Flanged

Main Features: Offset Design

1st Offset: The shaft centerline is positioned behind the disc centerline, reducing contact between the disc and seat before full closure. This allows for continuous engagement of the seating surface.

2nd Offset: The shaft centerline is offset from the valve and pipe centerline, creating a linear sealing surface. When the valve opens, the disc seal quickly disengages from the seat, significantly reducing friction and wear on the sealing surfaces.