FLAGE TYPE BUTTERFLY VALVE
A. FLAGE TYPE BUTTERFLY VALVE CHARACTERISTICS AND USAHE
The open-close piece of the valve is a round-disk butterfly board, and by rotating around the axis of its own inside the valve body, carries out the open-close or adjusting function. It features by:
1, simple structure, small volume and light weight
2, quick open-close, labor saving and small fluid resistance
3, good adjustable performance, can be adjusted flexibly within 0~900, suitable for the pipeline of water supply and drainage, high buildings, fire-fighting, petroleum, chemical industry, medicine, food industries etc. to act as open-close or adjustment.
B. FLAGE TYPE BUTTERFLY VALVE PRODUCT MANUFACTURE AND ACCEPTANCE STANDARDS
- Standards of design: JB/T8527, API1609, JIS B2064
- Standard of flange: GB4216, GB9115
- Structural length: GB12221, GB/T15188.2
- Testing standards: GB/T13927, JB/T9092
C. FLAGE TYPE BUTTERFLY VALVE MAIN TECHNICAL PARAMETER
| DN(mm) |
50~3000 |
| PN(MPa) |
0.25 |
0.6 |
1.0 |
1.6 |
Test pressure
(MPa) |
Shell test |
0.375 |
0.9 |
1.5 |
2.4 |
| Sealing performance |
0.275 |
0.66 |
1.1 |
1.76 |
| Applicable medium |
Water、 Steam、 Oil、 Sea-water、Nitric acid |
| Working temperature(℃) |
Sealing face material |
X Rubber |
J NBR |
Ethylene-propylene rubber |
PTFE |
Silicon rubber |
Flu rubber |
| Working temperature |
0~+60 |
-20~+80 |
-40~+150 |
-40~+200 |
-70~+250 |
-15~+250 |
D. FLAGE TYPE BUTTERFLY VALVE MATERIAL FOR MAIN PARTE
| Name of parts |
Material |
| Body |
C.l, Ductile iron, No25A, WCB, Stainless steel |
| Butterfly board |
C.l, Ductile iron, No25A, WCB, Stainless steel |
| Stem |
Grade , WCB, Stainless steel |
| Sealing face |
Neoprene, NBR, EPOM, PTFE |
| Packing |
PTFE , Flexible granite, NBR, V washer |
