FREE-VALVE centric plastic butterfly valves consist of a disc-shaped butterfly plate mounted at the center axis of the pipeline, which is rotated to open, close, or throttle the flow,the valves are quarter-turn valves with equal percentage type flow characteristics ,its provide moderate flow control and therefore can be used in both on-off and regulating services in a system.
- Main components made from corrosion-resistant polymeric materials,lightweight.
- Compact in design,making it ideal for tight spaces.
- Easily assembled with perfect sealing.
- The wafer body is placed between pipe flanges, and the flange bolts surround the valve body.
- Blow-out proof one-piece stem assembly.
- Equal percentage type throttling characteristic.
- Mechanically locked in handlever.
1 |
Size Range |
DN40~DN200 |
2 |
Nominal pressure |
Class 150 /PN10/PN16 |
3 |
Applicable Temperature |
0~120ºC |
4 |
Connection Type |
Wafer |
5 |
Body material |
RPP, PVDF, CPVC, UPVC |
6 |
Diaphragm |
EPDM+PFA /FEP |
7 |
Pressure test |
GB/T13927, API598 |
8 |
Face to Face |
GB/T12221, ASME B16.10 |
9 |
Operating Type |
Manual Lever
|
Material |
Medium temperature,°C |
Material |
Medium temperature,°C |
CPVC |
-20°C~+95°C |
UPVC |
0°C~+65°C |
FRPP |
-14°C~+90°C |
PPH |
-20°C~+110°C |
PVDF |
-40°C~+150°C |
|
|
DN |
PN |
L |
D |
D1 |
n-∅d |
DN40 |
PN10 |
39 |
148 |
110 |
4-∅19 |
DN50 |
43 |
162 |
125 |
4-∅19 |
DN65 |
45 |
180 |
145 |
4-∅19 |
DN80 |
45 |
196 |
160 |
8-∅19 |
DN100 |
56.5 |
225 |
180 |
8-∅19 |
DN125 |
65 |
255 |
210 |
8-∅19 |
DN150 |
75 |
285 |
240 |
8-∅23 |
DN200 |
85 |
340 |
295 |
8-∅23 |
Note: Our company also produces other pressure grade products, flange connection size according to customer requirements according to GB/T9113 or ASME B16.5.
FREE-VALVE Centric Plastic Butterfly Valves are ideal for a variety of service conditions where both on-off and throttling are desired. They are used widely in Water treatment, Power plants, Marine, Electroplating, Chemical process industry, Automotive industry, Cooling equipment, Aquariums, Swimming pool construction etc.