Analysis of two-way and three-way proportional integral electric control valve manufacturers of Zhejiang Baolun central air conditione

Zhejiang Baolun Valve Co
, Ltd
specializes in the production of central air conditioning electric control valve control valve
Key points: 1
It is used for hot water, cold water and low-pressure steam
2
Medium temperature: 1-10 ℃ to 180 ℃
3
0
03 of the leakage Kv value
4
Pressure range: 16bar
5
Diameter: dn15-500
5
The flow coefficient Kv value is 10-360
6
Connection method: screw port and flange
7
Pressure: PN16
8
Valve body material: brass, ductile iron, cast steel

Analysis on advantages and disadvantages of electric control valve:
1
Product advantages: in addition to the features of high reliability, full function and ultra light weight, the electric control valve has the following advantages: ⑴ it is convenient and economical to use the power supply, saving a series of costs for establishing the gas source station; (2) use “ Pneumatic valve + electric valve positioner + air source ” It not only increases the cost, but also reduces the reliability (the more links, the more factors of poor reliability); (3) from the economic point of view, in addition to the cost of gas source station, the cost of electric valve positioner is also saved: a good imported electric valve positioner is usually more than 5000 ~ 6000 yuan, better at the price of 8000 ~ 10000 yuan, and this price can basically buy back the highly reliable electronic actuator mentioned above; (4) the links are reduced, and the maintenance workload is reduced accordingly

2
Product disadvantages: the electric control valve is not without disadvantages: the internal heat generated by the motor operation will lead to thermal protection and stop the control valve; Because the motor must undergo multi-stage deceleration to output torque, the running speed is not very fast, and it is not applicable in some occasions requiring rapid opening and closing
The contradiction between DA torque and high speed is still difficult to solve; Due to the large number of moving parts, it is relatively easy to cause faults, especially under the condition of frequent adjustment, it is easy to cause faults such as motor thermal protection, reduction gear damage, module thyristor burnout, etc
under this condition, it is better to choose pneumatic control valve for Zui