Duplex Butterfly Valves
Duplex steel valves have good corrosion resistance and high strength performance because of their material character. So-called "duplex stainless steel" is the ferrite and the austenite probably respectively occupies in its melting organization one half. Even a small amount not less than 30% as well. Because the duplex stainless steel has the ferrite and the austenite elements, therefore it has merits that high intensity and bears the chloride stress corrosion performance which the ferritic stainless steel has, and fine tough and welding performance which the austenite stainless steel has.
Duplex steel valve's anti-chloride pitch corrosion, the slit corrosion and the stress corrosion performance are extremely superior, and the mechanical strength is high, bears weary and the attrition corrosion property is good, these merits which stainless steel all are unable to compare.
Duplex Butterfly ValvesApplication
Duplex butterfly valves mainly apply in the neutral chloride medium. The valves widely apply in the oil refining industry, the petrochemical industry and the chemical industry, the petroleum and the gas industry, the paper pulp and the paper industry, the chemical fertilizer industry (urea industry, phosphate fertilizer industry), professions and so on food and drugs manufacture industry. It substitutes the austenite stainless steel valve, the application is day by day widespread.
Duplex Butterfly Valves Structure (Duplex2205 double offset butterfly valve for example）
|
PARTS |
MATERIAL |
|
|
1 |
Gasket |
PTFE |
|
2 |
Split ring |
A182 F51 |
|
3 |
Stem |
A182 F51 |
|
4 |
Screw |
A182 F51 |
|
5 |
Seat |
PTFE/RPTFE |
|
6 |
Disc |
A890 4A |
|
7 |
Pin |
A182 F51 |
|
8 |
Seat retainer |
A890 4A |
|
9 |
Body |
A890 4A |
|
10 |
Bearing |
PEEK |
|
11 |
Packing |
PTFE |
|
12 |
Gland bushing |
A182 F51 |
|
13 |
Double-end bolt |
A193 B8M |
|
14 |
Hexagon nut |
A194 8M |
|
15 |
Bracket |
A351 CF8M |
|
16 |
Key |
UNS G10450 |
|
17 |
Gearbox device |
CF8M / WCB |
Related Butterfly Valves
Leave a Message
Weidouli ValvesCo., Ltd.,is a professional valve manufacturing industry, we provide Discharge Valves, rotary plug control valve, discharge valves, rotary plug valveand etc. Want to knowmore? Please contact us.
Send product request
Other supplier products
 |
Duplex Globe Valves | The microstructure of the duplex stainless steel globe valveconsists of a mixture of an austenitic phase and a ferrite phase. Therefore, the duplex... |
 |
Ball Valves | Ball valves are used to cut off or connect the medium in the pipeline, as well as to regulate and control the fluid. As a professional manual ball ... |
 |
Globe Type Control Valves | Weidouli's Globe type control valveare combined characteristics of CV3000 flow path design with our own advantages. The development of structural d... |
 |
Check Valves | Check valve is a valve referred to the opening and closing parts for the circular disc and by its own weight and medium pressure to block the media... |
 |
Duplex Butterfly Valves | Duplex stainless steel ball valveshave good corrosion resistance and high strength performance because of their material character. So-called "dupl... |
Same products
 |
Shoes Flexing Tester | Seller: Qinsun Instruments Co., Ltd | It's used for determining the flexibility resistance and or indicating the cracks od shoe or shoe... |
 |
Shoelace Abrasion Tester | Seller: Qinsun Instruments Co., Ltd | Application: This shoelace abrasion tester is used for shoelace against standard eyelet abrasion... |
 |
Heel Fatigue Tester | Seller: Qinsun Instruments Co., Ltd | Heel Fatigue Tester is used to determine the resistance of medium and high heels of ladies’... |
 |
Heel Impact Tester | Seller: Qinsun Instruments Co., Ltd | Heel Impact Tester is used to determine the impact strength of heels of ladies’shoes. Ap... |
 |
Ross Flex Tester | Seller: Qinsun Instruments Co., Ltd | Whole Sole ROSS Flexing Tester GT-KB05D To determine right angle flexing risistance for whole sol... |
