Flange Wafer Type Butterfly Valve with Pneumatic Piston Carbon Steel Material
ISO9001 Pneumatic piston low load carbon steel on-off butterfly valve
Material:Carbon steel
Pressure:PN0.25~PN1.0MPa
Connection:Wafer,flange
Temp-20~+450
Size:DN50~DN2400
Application:Gas
General
ZSHW/ ZDRW Series of Low Load Butterfly Valve,the body and disc are welded by the steel plate. Its features are simple structure, compact and light, easy operation. Equipped with rack and pinion type pneumatic actuator or electronic type electric actuator, and it is applicable to low pressure or high temperature gas.
Specification and Technical Parameter
Table 2 Rated Flow Coefficient
|
DN(mm) |
100 |
150 |
200 |
250 |
300 |
350 |
400 |
450 |
500 |
600 |
|
Rated Kv |
405 |
1150 |
2030 |
3150 |
4550 |
6200 |
8100 |
10260 |
13500 |
19800 |
|
DN(mm) |
700 |
800 |
900 |
1000 |
1100 |
1200 |
1300 |
1400 |
1500 |
1600 |
|
Rated Kv |
27000 |
35700 |
44600 |
55080 |
66650 |
81000 |
95060 |
110250 |
125000 |
144000 |
Table 4 Main Performance Parameter
|
Item |
Description |
Open type |
Back-seat type |
10°sealing type |
|
1 |
Basic error |
≤±2% |
||
|
2 |
Hysteresis |
≤±2% |
||
|
3 |
Dead zone |
≤±1.5% |
||
|
4
|
Allowable leakage |
≤±2%×Rated capacity |
≤±0.5%×Rated capacity |
≤±0.3%×Rated capacity |
