Concentric Double Flange Butterfly Valve
Features
Double Flange Type |
Simple structure & Stable connection |
Seat Design |
Vulcanized Rubber Lined |
Operation Cycles |
Over 100,000 times |
Leakage Level |
Bubbles-tight sealing with no leakage |
Low Torque |
Operation easy and flexible |
Bidirectional Sealing |
Any installation position |
Low Flow Resistance |
Improve fluid efficiency and reduce energy consumption |
Sealing Materials |
Rich variety over 5 types |
Coating Grade |
Conventional and special conditions of C1-C5 & CX |
Certificates |
ISO9001, CE, WRAS, ACS |
Specifications
Design Standard |
EN 593 |
Top Flange Standard |
ISO 5211 |
End Flange Standard |
EN 1092 PN10/16, ANSI 125LB/150LB |
Face to Face Dimension |
API 609, EN558-1 Series 13/14, DIN 3202 T3 K1 |
Testing Standard |
API 598, EN12266 |
Temperature |
-20℃~120℃(depends on the sealing material) |
Body Material |
Ductile Iron, Stainless Steel, Aluminum Bronze |
Disc Material |
Ductile Iron, Stainless Steel, Aluminum Bronze |
Shaft Material |
Stainless Steel, Aluminum Bronze, Inconel |
Seat Material |
EPDM, NBR, WRAS EPDM, VITON, Silicone |
Operator |
Lever, Gearbox, Pneumatic, Electric Actuator |
Dimension
|
Size |
C |
D |
□T / Ф |
PN10 |
PN16 |
ANSI 150LB |
Top Flange |
|||
|
Ф D2 |
n - Ф d |
Ф D2 |
n - Ф d |
Ф D2 |
n - Ф d |
|||||
|
DN50 |
30 |
108 |
9*9 |
125 |
4-19 |
125 |
4-19 |
120.6 |
4-19 |
F07 |
|
DN65 |
30 |
112 |
9*9 |
145 |
4-19 |
145 |
4-19 |
139.7 |
4-19 |
F07 |
|
DN80 |
30 |
114 |
9*9 |
160 |
8-19 |
160 |
8-19 |
152.4 |
4-19 |
F07 |
|
DN100 |
30 |
127 |
11*11 |
180 |
8-19 |
180 |
8-19 |
190.5 |
8-19 |
F07 |
|
DN125 |
30 |
140 |
14*14 |
210 |
8-19 |
210 |
8-19 |
215.9 |
8-22.4 |
F07 |
|
DN150 |
30 |
140 |
14*14 |
240 |
8-23 |
240 |
8-23 |
241.3 |
8-22.4 |
F07 |
|
DN200 |
35 |
152 |
17*17 |
295 |
8-23 |
295 |
12-23 |
298.4 |
8-22.4 |
F10 |
|
DN250 |
35 |
165 |
19*19 |
350 |
12-23 |
355 |
12-28 |
361.9 |
12-25.4 |
F10 |
|
DN300 |
35 |
178 |
22*22 |
400 |
12-23 |
410 |
12-28 |
431.8 |
12-25.4 |
F10 |
|
DN350 |
41 |
190 |
22*22 |
460 |
16-23 |
470 |
16-28 |
476.2 |
12-28.4 |
F10 |
|
DN400 |
51 |
216 |
27*27 |
515 |
16-28 |
525 |
16-31 |
539.7 |
16-28.4 |
F14 |
|
DN450 |
51 |
222 |
27*27 |
565 |
20-28 |
585 |
20-31 |
577.8 |
16-31.8 |
F14 |
|
DN500 |
57 |
229 |
36*36 |
620 |
20-28 |
650 |
20-34 |
635 |
20-31.8 |
F14 |
|
DN600 |
70 |
267 |
46*46 |
725 |
20-31 |
770 |
20-37 |
749.3 |
20-35.1 |
F16 |
|
DN700 |
66 |
292 |
63.35 |
840 |
24-31 |
840 |
24-37 |
863.3 |
28-35.1 |
F25 |
|
DN800 |
66 |
318 |
63.35 |
950 |
24-34 |
950 |
24-41 |
977.9 |
28-41.1 |
F25 |
|
DN900 |
118 |
330 |
75 |
1050 |
28-34 |
1050 |
28-41 |
1085.8 |
32-41.1 |
F25 |
|
DN1000 |
142 |
410 |
85 |
1160 |
28-37 |
1170 |
28-44 |
1200 |
36-41.1 |
F25 |
|
DN1200 |
150 |
470 |
105 |
1380 |
32-41 |
1390 |
32-50 |
1422.4 |
44-41.1 |
F30 |
|
DN1400 |
160 |
530 |
130 |
1590 |
36-44 |
1590 |
36-50 |
1651 |
48-47.6 |
F35 |
The vulcanized lined flange butterfly valve is coated with vulcanized rubber on its interior body surfaces, delivering high elasticity, exceptional wear and corrosion resistance, and reliable performance under conventional temperature. Double flange butterfly valve’s superior sealing capability stems from the robust bonding between the rubber and metal, along with the material’s flexibility that compensates for minor sealing surface deformations. The flange type of the cast iton butterfly valve makes the connection with the pipeline more stable .Widely applied in water supply or drainage, power, chemical, the double flange butterfly valve has become an indispensable choice for numerous operational scenarios due to its multiple advantages.