API 609 Wafer Butterfly Valves, A216 WCB, 16 IN, Triple Offset

Product Name: API 609 Wafer Butterfly Valves
Type: Triple Offset Butterfly Valve
Design Standard: API 609
Body Material: ASTM A216 WCB, Cast Carbon Steel
Nominal Size: 16 Inch, DN400, 400 mm
Nominal Pressure: Class 150 LB, PN20
End Connection: Wafer Ends
Operation: Gear
Temperature Range: -29°C to 425°C

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.

Technical Specification

» Product: Triple Eccentric Butterfly Valve

» Size Ranges: 2-64 Inch (DN50-DN1600) (Larger sizes upon request)

» Pressure Ratings: Class 150-600 LB (PN10-PN100)

» Body Materials: Carbon Steel (ASTM A216 WCB), Stainless Steel (ASTM A351 CF8, CF8M, CF3, CF3M), Low-Temperature Carbon Steel (ASTM A352 LCB, LCC)

» Shaft Material: 17-4PH, SS410, 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

» Ends Connections: Wafer, Lugged, Double Flanged, Butt Weld or Grooved

» Actuations: Manual, Pneumatic, Electric, Hydraulic, Counterweight, Electro-hydraulic

Product Features

» Lockable lever for secure positioning

» Easy on-site maintenance

» Facilitates automation for actuator integration

» Positive, tight shut-off for reliable sealing

» Optional top flange compatible with ISO 5211

» Qualified for both gaseous and liquid services

» Wide selection of body and trim materials suitable for a variety of media

» Complies with international standards: ISO 5752, BS 5155, API 609, MSS SP-68, ASME B16.10, ASME B16.5, DIN 3202

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.