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WCB Flanged  Eccentric Butterfly Valve
WCB Flanged  Eccentric Butterfly Valve

WCB Flanged Eccentric Butterfly Valve

Size DN50-DN600
Pressure PN10/16/150LB
Body Materials WCB
Seat Materials: EPDM
Disc Materials: WCB
Stem Materials: 2Cr13
INTRODUCTION
DATA
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INTRODUCTION
Features
Working temperature: 0~80℃
Suitable medium: Water, weak acid base, gas, oil, etc
Application field: Food, medicine, chemical industry, environmental protection, water treatment, water supply and drainage


Product Identification
Double eccentric butterfly valve is further improved on the basis of single eccentric butterfly valve. The structure is characterized by that the valve stem axis deviates from both the disc center and the body center. Double eccentric effect enables the butterfly plate to leave the ate seat aft The valve is opened, greatly eliminating unnecessary excessive squeezing and scraping between the butterfly plate and the seat, reducing the opening resistance distance, reducing wear and increasing the life of the seat.

Double eccentric butterfly valve is mainly used in water works, power plants, steel smelting, chemical engineering, water source engineering, environmental facilities construction and other systems for drainage.Compared with the center line butterfly valve, gh double valhi ly eccentric ist butterf pressure, longer life and better stability.


Product Advantages
1. Precision casting valve body. Qualified WCB material. Fine appearance, no sand hole.
2. Heavy valve body. Wall thickness meets the requirements of GB26640 to ensure compressive strength.
3. The valve body and inner parts are processed by CNC precision machine with high precision.
4. Different sealing materials can be selected to ensure the sealing surface wear resistance, erosion resistance, corrosion resistance, long service life.
5. Replaceable disc seal ring can be easily replaced.
6. The valve shaft is supported by self-lubricating sleeve bearings, which can reduce the friction produced during valve shaft transmission and reduce torque.
7. Each valve will be inspected for shell and seal pressure before leaving factory.
8. Epoxy coating, beautiful apperance.
DATA
Parameter Information:
Executive standard:
Name Design and manufacture Face to face Length Pressure Test  End  Flange 
Reference standard GB/T 12238 GB/T 12221 GB/T 13927 GB/T 9113/ASME B16.5
Material of Main Parts:
Name 8-Body 4-Seat Seal 6-Disc 3-Shaft 14-Gearbox
Material WCB EPDM WCB 2Cr13 Component
 
Size   PN10 PN16 150LB
DN NPS (Inch) L φk N-φd φk N-φd φk N-φd
50  2'' 108 125 4-18 125 4-18 120.7 4-19
65  2  1/2'' 112 145 4-18 145 4-18 139.7 4-19
80  3'' 114 160 8-18 160 8-18 152.4 4-19
100  4'' 127 180 8-18 180 8-18 190.5 8-19
125  5'' 140 210 8-18 210 8-18 215.9 8-22.4
150  6'' 140 240 8-22 240 8-22 241.3 8-22.4
200  8'' 152 295 8-22 295 12-22 298.4 8-22.4
250  10'' 165 350 12-22 355 12-26 361.9 12-25.4
300  12'' 178 400 12-22 410 12-26 431.8 12-25.4
350  14'' 190 460 16-22 470 16-26 476.2 12-28.4
400  16'' 216 515 16-26 525 16-30 539.7 16-28.4
450  18'' 222 565 20-26 585 20-30 577.8 16-31.8
500  20'' 229 620 20-26 650 20-33 635 20-31.8
600  24'' 267 725 20-30 770 20-36 749.3 20-35.1
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