Dynamic balanced electric control valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
Dynamic balanced electric control valves
features
EDRV dynamic balance electric regulator is the product of new generation of the traditional electric regulator. It is the integration of dynamic balance and electric adjustment. As shown in the picture, in the flow system of large loading fluctuation, when the system pressure changes, the dynamic balance electric regulator two sides' (P1 - P3)pressure differential is also changed.
(1) when the inlet pressure P1 rises, (P1 - P2) rises, then electric valve core moves upward. Make opening degree between P1, P2 reduced, core pressure P2 is also reduced; When the inlet pressure P1 reduced, the opening degree between (P1 - P2) rises, and valve core pressure P2 also rises. Therefore, no matter how the system pressure changes, through the electric valve core acting, the pressure differential between P2, P3 remain unchanged. So the electric valves anti-jamming capability is strong, and has the function of dynamic balance.
(2) when electric actuator accepts the valve control signal makes the shaft rotating R direction, the opening degree alos changes between P2,P3. Due to no matter how the system pressure differential changes(P1 –P3) pressure differential between P2 and P3 remain unchanged. therefore any corresponding open position, the transport of water flow is certain, and the actual flow characteristic curve is consistent with not early or late flow characteristic curve, without deviation, so the electric valves have better regulative performance than traditional electric regulator.
Structure
Dynamic balanced electric control valve constructral diagram(pic1)
technical parameters and performance indicators
materisl body: ductile cast iron sleeve: SS core: brass diaphragm:sealing electric actuator shell：EPDM PTFE aluminium alloy
actuator
Dynamic balanced electric control valve(pic1)
Dynamic balanced electric control valve(pic2)
technical parameters
| valve mode | type | specification | pressure differential scope（ KPa ） | flow scope（m3/h） | working pressure | flow error | flow temperature |
| two way | EDRV1 | DN25 | 30～300 | 0.2～2.9 | PN16 | 5% | 0～100℃ |
| EDRV2 | DN32 | 30～300 | 0.5～4.7 | ||||
| EDRV3 | DN40 | 30～300 | 1～7.7 | ||||
| EDRV4 | DN50 | 30～300 | 2～12.1 | ||||
| EDRV5 | DN65 | 30～300 | 3～20.4 | ||||
| EDRV6 | DN80 | 30～300 | 5～30.8 | ||||
| EDRV7 | DN100 | 30～300 | 10～45.3 | ||||
| EDRV8 | DN125 | 30～300 | 15～70.7 | ||||
| EDRV9 | DN150 | 30～300 | 20～101.8 | ||||
| EDRV10 | DN150 | 40～400 | 30～110 |
Dynamic balanced electric control valve constructral diagram(pic2)
dimension parameters
| valve mode | type | specification | external dimension | ||
| length（L） | down height（H2） | up height（H1） | |||
| 二通two way |
EDRV1 | DN25 | 160 | 70 | 265 |
| EDRV2 | DN32 | 180 | 100 | 275 | |
| EDRV3 | DN40 | 200 | 110 | 285 | |
| EDRV4 | DN50 | 230 | 120 | 290 | |
| EDRV5 | DN65 | 290 | 124 | 339 | |
| EDRV6 | DN80 | 310 | 150 | 348 | |
| EDRV7 | DN100 | 350 | 158 | 357 | |
| EDRV8 | DN125 | 400 | 193 | 379 | |
| EDRV9 | DN150 | 480 | 193 | 379 | |
| EDRV10 | DN150 | 480 | 193 | 379 | |
