ASTM A351 CF3M Butterfly Valve, API 609 CAT.B, 6 IN, CL150

Detail Information

Product Name: ASTM A351 CF3M High Performance Butterfly Valve
Design Standard: API 609 Category B
Body Material: ASTM A351 CF3M
Size: 6 Inch, DN150
Pressure: Class 150 LB, PN20
End Connection: Lug

The fire-safe high-performance butterfly valve is designed with two distinct seats to ensure optimal functionality and safety. The primary seat material, RPTFE (Reinforced Poly Tetrafluoroethylene), provides excellent sealing properties, achieving a tight shut-off and effectively preventing leakage. This soft seat material enhances the overall performance of the valve. In addition, the valve is equipped with a secondary fire-safe seat made of metal, which offers superior resistance to high temperatures and is capable of withstanding the harsh conditions of a fire. The combination of the RPTFE soft seat and the metal fire-safe seat ensures reliable performance under both normal and emergency conditions, making this valve an ideal choice for applications where safety and efficiency are critical.

Technical Specification

» High Performance Butterfly Valve
» Design: Bi-Eccentric
» Normal Size Range:
Class 150 LB: 2-60 Inch
Class 300 LB: 2-48 Inch
Class 600 LB: 2-24 Inch
» Normal Pressure Rating: Class 150-600 LB, PN10–PN40, 10K–20K
» Standard: API 609 Category B
» Body: ASTM A351 CF8, CF8M, CF3, CF3M, A890 4A, 5A, 6A
» Disc: ASTM A351 CF8, CF8M, CF3, CF3M, A890 4A, 5A, 6A
» Seat: SS 316L + RPTFE
» Shaft: 17-4PH
» Shutoff Rating: Class VI, Bubble Tight
» Operation: Handle, Worm Gear, Pneumatic, Electric
» Temperature Range: Soft Seat: -29°C to 150°C
» Medium: Water, Gas, Oil, etc.

Application Scope

Chemical / Petro-Chemical
Liquified Gas / Refrigeration
Heavy Industrial
Power / Co-Generation Plants
Steel and Iron Works
Commercial
Pulp and Paper Mills
Oil Refineries and Oil Field
Ship Building
Hydrocarbon Processing
Gas Piping
Local Area Energy Supply
Industrial Construction
Marine

Double Offset Butterfly Valve

The Double Offset High-Performance Butterfly Valve is a new type of butterfly valve designed by absorbing the advantages of several different structural butterfly valves. The sealing surface of the valve plate is a spherical arc surface. The sealing mechanism achieves a true dynamic seal through system pressure, thus providing reliable sealing performance and durability. It features a small volume, light weight, wide manufacturing range, and is easy to maintain and repair. Due to its double offset butterfly plate design and single-piece flexible lip-shaped sealing seat, it is ideal for applications requiring reliable sealing and good regulating characteristics. It can be used for quick shut-off or regulating flow.

Double Offset Frictionless Design

1st offset: Shaft is positioned downstream from the centerline of the seat.
2nd offset: Shaft is off center from the vertical axis of the seat.
ISO 5211 Top Flange
In addition to standard, durable V-ring packing, you can also choose from optional graphite
high temperature packing or emissions control packing.
Bi-Directional, Shut off performance
Seat Options: Rubber, PTFE, RPTFE, or Fire Safe PTFE
The double offset operating principle minimizes seat wear and lowers operating torque to
improve durability.
Positive sealing is mechanically achieved and does not rely on line pressure assistance.

Seat Structure

Double Offset PTFE Seat Butterfly Valve

A surplus of material between the PTFE Seat and Disc ensures a reliable seal in a low pressure environment.
In high pressure situations, the force of the medium pushes against the seat contacting the sealing surface for a stronger seal.
The disc surface has a conical design to reduce frictional force. The valve seat can also be replaced or repaired easily.

Double Offset Fire Safe PTFE Butterfly Valve

Fire Safe valve seat with dual seal includes a primary PTFE seat insert and metal seat.
In the event that the PTFE insert is destroyed, the secondary metal seat provides an effective shut-off.

Shaft Retention

Externally retained, double blowout proof stem design as API 609
External: Shaft is designed with an integral collar and gland follower to prevent blowouts.

Zero Leakage