Electric control valve it working condition is good or bad will directly affect the automatic control process, Shanghai valve manufacturer this paper will detail the use of electric control valve.

1 installation note

new design, installation of control system, in order to ensure that the regulator while driving to work, and make the system safe operation, a new valve before installation, should mark on the first check valve nameplate is consistent with the design requirements. At the same time also respond to the following project debug.

basic error limits; All the schedule deviation; Back to the poor; Dead zone; Leakage ( In demanding situations) 。

if it is on the original system of regulating valve for overhaul, except to check all the information, also respond to the stuffing box and the connection of the old valve sealing check etc.

regulating Industrial Valves in use at the scene, many often caused by the quality, not because the regulator itself but the regulating valve installation that caused by improper use, such as installation environment, installation position and direction due to reasons such as caused by improper or line is not clean. Therefore electric regulating valve during installation should pay attention to the following aspects:

( 1) Environmental temperature is regulator belongs to the field instruments, required by the - 25 ~ 60 ℃, relative humidity & le; 95%. If it is installed in the open air or high temperature applications, waterproof, cooling measures should be taken. Where there is the source to stay away from source or increase the antivibration measures.

( 2) Regulating valve should be installed vertically, commonly special circumstances can tilt, such as the Angle is very big, or too much weight on the valve when the valve itself should increase support protection.

( 3) Install regulator pipe generally do not too high above the ground or floor, height is greater than 2 m in pipe should try to set up the platform, facilitate the handwheel operation and easy maintenance.

( 4) Regulating valve before installation for pipeline cleaning, eliminate dirt and welding slag. After installation, to ensure that no residue in the body, should also again to the valve and clean, the access into the medium should make all open valve, in order to avoid impurity stuck. After using the handwheel institutions, should be restored to the original neutral position.

( 5) In order to make the valve in case of failure or repair can continue to make the production process, the regulator should add by-pass line.

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