Concentric Resilient Seal Wafer Butterfly Valve, Soft backrest Seat
Features
Seat Type |
Backless and Replaceable |
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 API 609 |
Top Flange Standard |
ISO 5211 |
End Flange Standard |
EN 1092 PN10/16, ANSI 125LB/150LB, JIS B2220 10K |
Face to Face Dimension |
API 609, EN558-1 Series 20, BS5155, DIN3202 K1 |
Testing Standard |
API 598, EN12266 |
Temperature |
-20℃~120℃ (depends on the sealing material) |
Body Material |
Cast Iron, Ductile Iron |
Disc Material |
Ductile Iron, Stainless Steel, Aluminum Bronze |
Shaft Material |
Stainless Steel, Aluminum Bronze, Inconel |
Seat Materia |
EPDM, NBR, WRAS EPDM, VITON, Silicone |
Operator |
Lever, Gearbox, Pneumatic, Electric Actuator |
Dimension
Size |
D |
□T |
PN10 |
PN16 |
ANSI 150LB |
Top |
|||
Ф D 1 |
n - Ф d |
Ф D 1 |
n - Ф d |
Ф D 1 |
n - Ф d |
||||
DN50 |
43 |
9*9 |
125 |
4-19 |
125 |
4-19 |
120.6 |
4-19 |
F05 |
DN65 |
46 |
9*9 |
145 |
4-19 |
145 |
4-19 |
139.7 |
4-19 |
F05 |
DN80 |
46 |
9*9 |
160 |
4-19 |
160 |
4-19 |
152.4 |
4-19 |
F05 |
DN100 |
52 |
11*11 |
180 |
4-19 |
180 |
4-19 |
190.5 |
4-19 |
F07 |
DN125 |
56 |
14*14 |
210 |
4-19 |
210 |
4-19 |
215.9 |
4-22.4 |
F07 |
DN150 |
56 |
14*14 |
240 |
4-23 |
240 |
4-23 |
241.3 |
4-22.4 |
F07 |
DN200 |
60 |
17*17 |
295 |
4-23 |
295 |
4-23 |
298.4 |
4-22.4 |
F10 |
DN250 |
68 |
22*22 |
350 |
4-23 |
355 |
4-28 |
361.9 |
4-25.4 |
F10 |
DN300 |
78 |
22*22 |
400 |
4-23 |
410 |
4-28 |
431.8 |
4-25.4 |
F10 |
The concentric soft seat wafer butterfly valve is a widely used type of valve. Cast iron concentric soft seat wafer butterfly valve key feature lies in the concentric arrangement of the butterfly plate and seat along the entire circumference, providing bidirectional sealing capability. Featuring a four-stage loading elastic seal system, it ensures zero leakage both inside and outside the valve. With its simple structure and user-friendly operation,Ductile iron concentric soft seat wafer butterfly valve is extensively applied across industries including food processing, pharmaceuticals, chemical engineering, and petroleum. It can handle various media such as water, gas, and oil, effectively regulating flow rates and achieving precise shut-off functions.