API 609 Triple Eccentric Butterfly Valve, WCB, 20 IN, 150 LB

The API 609 Triple Eccentric Butterfly Valve, manufactured with an ASTM A216 WCB body, offers robust performance for fluid control in industrial systems. With a 20-inch (DN500) size, Class 150 LB, and PN20 pressure rating, it is designed for high-pressure applications. The valve features double flanged ends for secure installation and is operated by a worm gear, ensuring precise control and reliable operation.

Product Name: API 609 Triple Eccentric Butterfly Valve
Design Standard: API 609
Body Material: ASTM A216 WCB
Size: 20 Inch, DN500
Pressure: Class 150 LB, PN20
End Connection: Double Flanged
Operation: Worm Gear

We offer a comprehensive range of Triple Eccentric Butterfly Valves in various pressure classes, body styles, and materials to address critical process requirements in diverse industries such as hydrocarbon, power, chemicals, fertilizer, and more. The product range covers valves in ASME classes up to 600, in sizes up to 64" (1600 mm), and in materials such as carbon steel, stainless steel, and alloy steels, suitable for temperatures as high as 538°C (1000°F). Based on customer requirements, valves in higher pressure classes, larger sizes, and other materials are also available. The range includes valves for cryogenic services. The metal-seated valves conform to API 609.

» True Bi-Directional Performance: Triple Offset Butterfly Valves offer high-integrity sealing in both directions.
» Advanced Manufacturing: All machining operations are carried out on 5-axis machining centers.
» Customized Welding: Customized welding machines are employed to ensure precision and quality in the manufacturing process.

Technical Specifications

» Size Range: 2-64 Inch (DN50-DN1600) (Larger sizes upon request)
» Pressure Ratings: Class 150-600 LB (PN10-PN100)
» Body Material:
   Carbon Steel (ASTM A216 WCB)
   Stainless Steel (ASTM A351 CF8/CF8M/CF3/CF3M)
   Low Temp Steel (ASTM A352 LCB/LCC)
» Shaft Material: 17-4PH, SS 410, XM-19
» Seat Material: Fully metal seat, SS + Graphite Seat
» Operation: Handle, Worm Gear, Pneumatic, Electric
» Temperature Range:
   Metal Seat: -29°C to 425°C
   Metal Seat (Cryogenic): -196°C to 121°C
» End Connections: Wafer, Lugged, Double Flanged, Butt Weld, Grooved
» Actuators: Manual, Pneumatic, Electric, Hydraulic, Counterweight, Electro-hydraulic
» Medium: Water, Gas, Oil, etc.

Product Features

» Lockable Lever
» Site Maintenance Friendly
» Easy Automation
» Positive Tight Shut-off
» Optional Top Flanges to ISO 5211
» Suitable for Both Gaseous and Liquid Services
» Wide Range of Body and Trim Materials for Various Medium Services
» Complies with ISO 5752, BS 5155, API 609, MSS-SP-68, ASME B16.10, ASME B16.5, DIN 3202

Triple Offset Butterfly Valve

Triple offset metal sealing butterfly valve uses the three eccentric structure with multi-layer metal seal or pure metal sealing ring, different sealing materials are being used according to the different temperature request from end user.The structure of valve sealing ring that was formed after machining for triple eccentric butterfly valve is oblique cone type, the purpose of which is to let the disc open in a subtle angle and seat sealing surface can be completely separated from the sealing surface of disc, thus to reduce the friction of sealing surface during the open and close.

Triple Offset Frictionless Design

• Offset 1: Offset for seat seal and the rotation center of stem.
• Offset 2: Center of pipe and disc.
• Offset 3: Seat sealing angle center line and flow passage center.
• The triple offset of butterfly valve ensures the valve disc is completely separated from seat sealing surface while open in a slightly angle which could reduce the friction of sealing surface during open and close and opening torque as well as prolong the service life of the sealing surface.
• Our metal sealing butterfly valve adopts multi-layer sealing ring to achieve the valve seal, the multi-layer seal ring is generally made of stainless steel and graphite combination The pure metal sealing can be used for special medium or high temperature.

Seat Structure

• Low Operating Torque: Our butterfly valves combine three offsets. Standard sealing is graphite + metal. Optional PTFE + metal combinations are available for different temperatures and media, using flexible laminated metal and graphite to ensure a tight, uniform seal and reduce operating torque.
• Zero Leakage: Laminated seal rings are self-aligning, allowing the valve to meet zero leakage per API 598.
• Fire-Safe Design: Standard valves are not soft-seated and meet API 607 fire-safe requirements.
• Anti-Blowout Shaft: Double anti-blowout design meets API 609 and ASME B31.1.
• Top Retention: Packing gland follower retains the stem.
• Bottom Retention: T-shaped collar prevents stem blowout.

ISO 5211 Top Mounting

Different End Connections Available: