API 609 Cat B
Butterfly Valves, Double Offset, 24 Inch/DN600, Soft Seat, Gear Operation.
Valve Description
1862171 High-Performance Butterfly Valve
Design Standard: EN 593, API 609 Category B
Nominal Size: 24 Inch, DN600
Nominal Class: 150 LBS, PN20
Seat Type: Soft Seat
Operation: Gear
Structure: Double Offset, Double Eccentric
Body Material: ASTM A351 CF8, ASTM B148 C95800, Titanium, ASTM A890 5A, ASTM A890 4A, ASTM A216 WCB, ASTM A351 CF8M.
Seat: RPTFE, PPL
End Connection: Wafer
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
Key Features: Long working life for frequent operation (million cyclings), Lower torque, Replaceable seat, Tight sealing, Excellent control characteristics, Bi-direction sealing under full pressure, fire safe seat 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
Working Temperature: -26°C to +120°C (180°C for PPL seat)
End Connection: Wafer, Lug, Flanged(FF, RF, RTJ)
Operation: Manual (lever, gear), Pneumatic Actuator, Motor Actuator
Main Features
Offset Design
1st Offset: The shaft centerline is positioned behind the disc centerline, minimizing contact between the disc and seat before full closure, allowing continuous engagement of the seating surface.
2nd Offset: The shaft centerline is offset from the valve and pipe centerline, creating a linear sealing surface. This ensures the disc seal quickly disengages from the seat when the valve opens, significantly reducing friction and wear on the sealing surfaces.
Compact Design
With a shorter face-to-face dimension and lightweight construction, this design saves valuable space in piping systems compared to other valve types.
