API 609 Double Offset Butterfly Valve, C95800, 32 IN, 150 LB

Product Name: API 609 Double Offset Butterfly Valve, Aluminum Bronze
Type: High Performance Butterfly Valve
Design Standard: API 609 Category B
Body Material: ASTM B148 C95800
Size: DN800, 32 Inch
Pressure: PN16, Class 150 LB
End Connection: RF Flanged
Operation: Bare Shaft
Medium: Sea Water
Temperature Range: -29°C to 150°C 

Product Description

The flanged double offset high-performance butterfly valve in bronze is a highly versatile and durable valve designed for various industrial applications. It features a bi-directional design and a blow-out proof shaft for reliable performance under extreme conditions. The valve can be customized with different seat options, including soft seat, metal seat, and fire-safe seat, based on specific customer requirements. This adaptability ensures enhanced functionality and compatibility with a wide range of industries and environments. With its robust construction and customizable features, the flanged double offset high-performance butterfly valve in bronze provides an efficient flow control solution that is widely used across numerous sectors.

Technical Specification

» Size Range:
  Class 150 LB: 2-60 Inch
  Class 300 LB: 2-48 Inch
  Class 600 LB: 2-24 Inch
» Pressure Rating: Class 150-600 LB, PN10-PN40, 10K-20K
» Design Type: Double Offset
» Standard: API 609 Category B
» Body Material: Aluminum Bronze (ASTM B148 C95800, C83600, B584 C84400, ASTM B62)
» Disc Material: Aluminum Bronze (ASTM B148 C95800, C83600, B584 C84400, ASTM B62)
» Shaft Material: MONEL K500
» Shutoff Rating: Class VI, Bubble Tight
» Certifications: API 607, PED
» Seat Design: Unique Valve Seat Design
» Optional Seat Materials: RTFE
» Operation Options: Handle, Worm Gear, Pneumatic, Electric
» Temperature Range:
  Soft Seat: -29°C to 260°C
  Metal Seat: -51°C to 550°C
  Metal Seat (Cryogenic): -196°C to 121°C
  Fire Safe Seat: -51°C to 550°C
» End Connections: Wafer, Lug, RF Flange
» Medium: Sea Water, etc. 

Application Scope

Chemical / Petrochemical
Liquefied Gas / Refrigeration
Heavy Industrial
Power / Co-generation Plants
Steel and Iron Works
Commercial Applications
Pulp and Paper Mills
Oil Refineries and Oil Fields
Shipbuilding
Hydrocarbon Processing
Gas Piping
Local Area Energy Supply
Industrial Applications
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

• Disc-Seat sealing is achieved by evenly loading torque force onto the disc's laminated seal

ISO 5211 Top Mounting

Different End Connections Available: