Installation of electric control valve precautions

Installation of electric control valve precautions
The use of electric control valve should pay attention to the following aspects:

1. control valve installed before the pipeline cleaning, remove dirt and welding slag. After installation, in order to ensure that no impurities remain in the valve, the valve should also be cleaned again, that is, through the media, should be open to all valves, so as not to impurities stuck. After using the handwheel, it should be restored to its original neutral position.

2. control valve should be installed vertically, in exceptional circumstances can tilt, such as tilt angle is large, the valve itself weight is too large, the valve should be increased support protection.

3. actuator reducer overhaul should be noted after lubrication, low-speed motor is generally not washable. After assembly, check whether the opening of valve position and valve position are consistent.

4. valve belongs to the field instrument, environment temperature should be - 25 to 60 DEG C, relative humidity is less than 95%. Is installed open-air or high temperature occasions, waterproof and cooling measures should be taken. There are focal points to keep away from the vibration source or to increase the anti vibration measures.

5. electric control valve installation of electrical parts should be related to electrical equipment construction requirements. Flameproof products shall be installed according to the code for installation of electrical equipment in explosion danger places. Such as on-site wire using SBH or other six core or eight core, outer diameter of about 11.3mm or so, rubber installation cable. Use, repair, explosive places, no electricity, open cover repair and flameproof surface of the play. At the same time, do not knock or cut the flameproof surface in the disassembly and assembly. After the overhaul, you need to restore it to the original flameproof requirement.

6. to make the valve failure or maintenance, so that the production process can continue, the valve should be bypass pipeline.At the same time should also pay special attention to whether the installation of the control valve in line with the process requirements.

7. installation of control valve pipe, generally do not leave the surface or board is too high, the height of the pipeline is greater than 2m, should be set up as far as possible, in order to facilitate the operation of hand wheel and easy maintenance.