Butterfly Valves
Hand operated butterfly valveof Weidouli are widely used in chemical industry, petrochemical industry, marine development, smelting, etc., as regulating and closing equipment.
The seat and disc of our bidirectional butterfly valveemploy the most advanced technology to complete the structural design. At the very moment when the disc opens and closes, the disc produces a cam action, which can pull the disc with less effort, greatly reduces the wear and deformation of the valve seat, and increases the service life of the valve.
The Details Of Butterfly Valves
The Drawing Of Butterfly Valves
Types Of Butterfly Valves
Titanium Butterfly Valves
Nickel Butterfly Valves
Monel Butterfly Valves
Hastelloy Butterfly Valves
Inconel Butterfly Valves
Duplex Butterfly Valves
Super Austenitic Butterfly Valves
NAB C95800 Butterfly Valves
Stainless Steel Butterfly Valves
Zirconium Butterfly Valves
Tantalum Butterfly Valves
Weidouli Butterfly Valves Have Double offset And Triple Offset Both Types
|
ASME butterfly valve as citing |
|
|
Design1 |
API 609 |
|
Testing |
API 598 |
|
Face to face dimension |
API 609 |
|
Flange ends dimension2 |
ASME B16.5,ASME B16.47 Series A |
|
Pressure Temperature Rating |
ASME B16.34 |
|
Visual inspection of casting |
MSS-SP-55 |
Notes:
*Other designs are available upon request. BS EN593,DIN,JIS,GB /T 12238etc.
Double offset butterfly valves specification:
Anti-static
Blow-out proof stem
V type packing
Zero leakage
Ends: Wafer, Lug.
Unidirectional/Bi-directional sealing
Operation: Lever, Gear, Electric, Pneumatic actuator
Bare shaft with ISO 5211 top mounting flange
Applicable seat materials of double offset butterfly valves
PTFE
RPTFE(15% Glass Filled)
RPTFE(25% Carbon Filled)
Viton
Other materials can be supplied upon request
|
Size/Pressure produce range |
Operator |
|
|
Pressure |
Wafer/Lug |
|
|
150LB |
2” up to 100” |
2"~4" Lever; 5"~100" Gear |
|
300LB |
2” up to 60” |
2"~4" Lever; 5"~60" Gear |
|
600LB |
On application |
|
Triple butterfly triple offset valvespecification
1st Offset: It is accomplished by moving the centerline of the shaft away from the seat surface.
2nd Offset: It is accomplished by moving the centerline of the shaft offset from the centerline bore of the valve.
3rd Offset: It is accomplished by adjusting the cone angle created by the 1st and 2nd offset angles at some point downstream of the valve in the center of the piping to the adjacent piping wall.
By incorporating the 3 offsets into one design eliminates any risk of friction and jamming of the disc on the seat. This increases valve life time, the driving torque is very low, in comparison with other types of valves
Triple offset butterfly valves specification:
Anti-static
Blow-out proof stem
Fire safe API 607
V type packing
Zero leakage
Ends: Wafer, Lug, Double flange.
Uni-directional/Bi-directional sealing
Operation: Lever, Gear, Electric, Pneumatic actuator
Bare shaft with ISO 5211 top mounting flange (when specified)
Applicable seat materials of triple offset butterfly valves
Metal with Graphite
Metal with PTFE
Other materials can be supplied upon request
|
Size/Pressure produce range |
Operator |
|
|
Pressure |
Wafer/Lug/Flange |
|
|
150LB |
3” up to 80” |
3"~4"Lever; 5"~80"Gear |
|
300LB |
3” up to 40” |
3"~4" Lever; 5"~40" Gear |
|
600LB |
On application |
|
Weidouli Valves Co., Ltd.,is a professional butterfly valves company, we provide bidirectional butterfly valve, wsv valve, hand operated valveand etc. Want to know triple offset butterfly valve advantages, butterfly valve advantagesor buy butterfly valves? Please contact us.
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