Double Eccentric Butterfly Valve, A351 CF8, 300 LB, 24 Inch

ASTM A351 CF8 Butterfly Valve, 24 Inch/DN600, 300 LB, Wafer End.

Valve Description

1862192 High-Performance Butterfly Valve
Design Standard:	API 609 Category B, EN 593
Body Material:	ASTM A351 CF8, ASTM A890 4A, ASTM B148 C95800, ASTM A216 WCB, ASTM A890 5A, ASTM A351 CF8M, Titanium.
Nominal Size:	24 Inch, DN600
Nominal Class:	CL 300 LB, PN50
Seat Type:	Soft Seat
Operation:	Gear
Seat:	RPTFE, PPL
End Connection:	Wafer
Structure:	Double Offset, Double Eccentric
Trim Material:	ASTM A351 CF8, ASTM A351 CF8M, ASTM A890 4A, ASTM A890 5A, ASTM B148 C95800, Titanium
Face to Face:	API 609, EN 593
Test and Inspection:	API 598, API 609
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 - 48 Inch (DN15 - DN1200)
Pressure Range: Class 150 - 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(FF, RF, RTJ)
Top Mounting: ISO 5211 Top Mounting Available
Operation Types: Lever, Gear, Pneumatic Actuator

Main Features

Offset Design

1st offset: The shaft centerline is positioned behind the disc centerline, reducing contact between the disc and seat during closure and allowing continuous engagement with the seating surface.

2nd offset: The shaft centerline is offset from the valve and pipe centerline, creating a linear sealing surface. This ensures that as the valve opens, the disc seal quickly disengages from the seat, minimizing friction and wear on the sealing surfaces.

Compact Design

With a shorter face-to-face dimension and lightweight structure, it saves space in piping systems compared to other valve types.

Low Emission and Anti-Blowout Stem Design

Pre-compressed flexible graphite packing ensures lower torque and better sealing, with controlled stem and stuffing box roughness. The live-loaded gland flange allows easy packing adjustment, while the space ring and gland prevent stem blowout.