BUTT-CLAMPED TYPE PASTERN BUTTERFLY VALVE
A. BUTT-CLAMPED TYPE PASTERN BUTTERFLY VALVE STRUCTURE 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 of the valve body, carries out the open-close or adjusting functions. 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. BUTT-CLAMPED TYPE PASTERN BUTTERFLY VALVE PRODUCT MANUFACTURE AND ACCEPTANCE STANDARDS
- Standards of design: JB/T8527, API1609, JIS B2064
- Standards of flange: GB9115
- Structural length: GB12221, GB/T15188.2
- Testing standards: GB/T13927, JB/T909
C. BUTT-CLAMPED TYPE PASTERN 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, acid |
| Working temperature(℃) |
J NBR |
Ethylene-propylene rubber |
PTFE |
Silicon rubber |
Flu rubber |
| -20~+80 |
-40~+150 |
-40~+150 |
-70~+25 |
-15~+250 |
D. BUTT-CLAMPED TYPE PASTERN BUTTERFLY VALVE MATERIAL FOR MAIN PARTS
| Name of parts |
Material |
| Body |
C.l, Ductile iron, No25, WCB, Stainless steel |
| Butterfly board |
C.l, Ductile iron, No25, WCB, Stainless steel |
| Stem |
Grade , WCB, Stainless steel |
| Sealing face |
Neoprene, NBR, EPOM, PTFE |
| Packing |
PTFE , Flexible granite, NBR, V washer |
