Centerline Type Butterfly Valve
The centerline butterfly valve, also called concentric butterfly valve, features aligned centerlines for the valve stem, disc, and body, offering a simple structure and easy manufacturing. Commonly rubber-lined, it ensures tight contact between the disc and seat to prevent leakage. The valve's sealing structure aligns the disc's sealing line with the body and stem axis, with smooth flat surfaces near the stem and a spherical outer edge for effective sealing. The rubber seat liner is molded for optimal surface roughness, minimizing wear and leakage.
Centerline Type Butterfly Valve Product List
PTFE Lined Butterfly Valve, API 609, A216 WCB, DN100, PN16
PFA Lined Butterfly Valve, API 609, A216 WCB, 2 Inch, CL150
Electric Actuated Butterfly Valve, API 609, DI, DN100, PN16
Pneumatic Actuated Butterfly Valves, API 609, A351 CF8, 2 IN
API 609 Butterfly Valve, ASTM A351 CF8, 4 IN, CL150, DN100
Marine Spiral Butterfly Valve, API 609, GGG40, 4 IN, 5K, 10K
ASTM A351 CF8 Butterfly Valve, API 609, 2 Inch, CL150, Wafer
PTFE Sealed Butterfly Valve, API 609, A216 WCB, 4 IN, 150 LB
ASTM B148 C95400 Concentric Butterfly Valve, API 609, 4 Inch
Wafer Concentric Butterfly Valve, API 609, GGG40, 4 IN, CL150
Lug Concentric Butterfly Valve, API 609, GGG40, 4 IN, 150 LB
QT450 Concentric Butterfly Valve, API 609, 4 Inch, 150 LB
API 609 Concentric Butterfly Valve, GGG40, 4 IN, JIS 5K,10K
Total 13 Records, 16 records per page
Concentric Lining Butterfly Valve
Concentric Lining butterfly valve adopts lining on all the parts that contact with medium inside of body, the stainless steel which is resistance of corrosion is used as stem and disc to ensure the corrosion resistance of different strong corrosive medium. The valve body and disc materials can be made of cast iron, carbon steel or stainless steel to ensure the bearing strength. Many kinds of soft sealing material such as NBR, EPDM or PTFE etc can be used as lining material to adapt to different corrosive medium or working temperature.
Structural Features
- The indicator plate has multiple opening angles ranging to 90 degrees, which is convenient to locate the gate.
- Top flange as per ISO 5211 to allow for the easy installation of gear box and actuators.
- O-rings provide positive stem sealing performance.
- Note: Alternative packing solutions available.
- Dual stem design reduces valve operating torque.
- Upper and lower bearings minimize operating torque.
- The semi-circular butterfly plate design reduces operating torque and promotes extended service life.The seal ring is supported to achieve disassembly and prevent leakage of the seal ring.
- The seal ring extends to the end of the body and is installed without additional gaskets.
ISO 5211 Top Mounting
Different End Connections Available:
Pressure/Temperature Ratings Chart:
