Lug Triple Eccentric Butterfly Valve, API 609, A890 5A, 4 IN

Product Name: Lug Type Triple Eccentric Butterfly Valve
Type: Triple Eccentric Butterfly Valve
Design Standard: API 609
Body Material: ASTM A890 5A
Shaft Material: MONEL K500
Size: 4 Inch, DN100
Pressure: Class 150 LB, PN20
End Connection: Lug
Operation: Worm Gear
Medium: Sea Water
Temperature Range: -29°C to 150°C

We provide a wide selection of Triple Eccentric Butterfly Valves, available in various pressure classes, body styles, and materials. These valves are designed to meet critical process demands across multiple industries, including hydrocarbon, power, chemicals, and fertilizers. The product range includes valves in ASME classes up to 600 LB, with sizes up to 64 Inch (1600 mm). They are made from carbon steel, stainless steel, and alloy steels, and are suitable for temperatures as high as 538°C (1000°F). Additionally, we can offer valves in higher pressure classes, larger sizes, and alternative materials based on customer requirements. The range also includes valves for cryogenic applications. The metal-seated valves comply with API 609 standards. Triple Eccentric Butterfly Valves provide true bi-directional functionality and ensure high-integrity sealing. All machining processes are performed on 5-axis machining centers, and customized welding machines are used in the manufacturing process.

Technical Specification

» Size Range: 2-40 Inch (DN50-DN1000) (Larger sizes upon request)
» Pressure Ratings: Class 150 LB (PN10, PN16)
» Body Material: ASTM A890 4A, 5A, 6A
» Seat Material: Fully metal seat, SS + Graphite Seat, PTFE Seat
» Operation: Handle, Worm Gear, Pneumatic, Electric
» Temperature Range:
   Metal Seat: -29°C to 425°C
   PTFE Seat: -29°C to 150°C
» End Connections: Wafer, Lugged, Double Flanged, Butt Weld, Grooved
» Actuators: Manual, Pneumatic, Electric, Hydraulic, Counterweight, Electro-hydraulic

Product Features

» Lockable Lever: Ensures secure positioning and prevents unauthorized operation.
» Site Maintenance: Easy to maintain on-site, reducing downtime and maintenance costs.
» Ease of Automation: Compatible with various automation systems for seamless integration.
» Positive Tight Shut-Off: Achieves reliable sealing with zero leakage.
» Optional Top Flanges to ISO 5211: Provides compatibility with a wide range of actuators.
» Qualified for Both Gaseous and Liquid Services: Suitable for diverse applications in gas and liquid media.
» Broad Line of Body and Trim Materials: Offers a variety of materials to meet different medium service requirements.
» Compliance with Major Standards: Adheres to international standards including ISO 5752, BS 5155, API 609, MSS-SP-68, ASME B16.10, ASME B16.5, and 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: