the electric actuator or pneumatic actuator and valve. Straight trip through

single seat type and through two two-seater, which has a large flow capacity,

the imbalance do small and stable operation of the features, so often especially

suitable for high flow, high pressure drop and leak a few occasions. Rotary are:

V-shaped electrically adjustable ball valves, pneumatic diaphragm shut-off valve,

eccentric butterfly valve.
China control valve manufacture-Datian Valve, the specialist of China valve

manufacture, main product range: control valve
(pneumatic control valve ,
electric control valve), ball valve, automatic recirculation valve, gate valve,

butterfly valve, globe valve, check valve, choke valve, safety valve, plug valve,

diaphragm valve, strainer, pressure reducing valve and valve products

(air source heat pump).

The installation of pneumatic diaphragm control valve control valve

installation should pay special attention to the following points.

(1) The valve should be installed vertically in horizontal pipelines,

the need to level and tilt installation in special circumstances, usually

to add support.

(2) When the selected control valve nominal diameter Pipe Diameter,

Reducing joint should be retrofitted to connect.

(3) The installation site should have a better environmental conditions,

ambient temperature should be -25 ~ +55 ℃.

(4) try to avoid the occasion of vibration source, otherwise it shall

take the necessary anti-vibration reinforcement measures.

(5) when installed, must be made on the body or flange on the direction

of the arrow point to the media direction.

(6) prior to installation, need to carefully remove the pipe welding slag

and other debris; after installation, the spool in the maximum opening,

and piping and control valves to be cleaned again, to prevent debris from

jamming and damage section parts.

(7) pneumatic control valve should be installed in the ease of maintenance,

repair location.

(8)Straight pipe in front of the valve (8) should be as long as possible.

(9) The export of piping applications 3 to 5 times the pipe diameter of straight pipe.

(10) In order to ensure the control valve and adjust the system failure will

not affect the production and security incidents, generally need to install

the bypass and the bypass valve. The bypass valve can not be installed just

above the valve, the bypass valve so as to avoid the corrosive media leaks

to the control valve. Regulating valve must be installed before and after

the cut-off valve, high temperature, pressure, frozen, viscous media,

but also guide shower valve installed.

Reproduced in: http://www.controlvalve.net.cn/NewsDetail-19.html

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