Industrial Pneumatic Air Actuator , Air Torque Actuators Spring Return

High Pressure Pneumatic Air Actuator , Air Torque Spring Loaded Double Acting Actuator​

electric value actuator which controls ball value , butterfly value , and stopcock . this product has better performance such as small volume , light weight , high efficiency . and low noise , it can work at field workship or by remote control , it is applied in industry of petrol , chemistry , power plant , paper making and water treatment .

Pneumatic actuator working principle

1, double acting actuator
A port intake, B port exhaust, push the two pistons separately to the two B port intake, A port exhaust, push the two pistons close to the center
While moving, the output shaft turns the valve counterclockwise to open the heart, and the output shaft rotates the valve clockwise to close.

2, single acting actuator
A port intake, B port exhaust, push the two pistons separately to the two exhaust or power loss, the spring pushes the two pistons close to the center
While moving, compress the spring at the same time, the output shaft moves counterclockwise, and the output shaft rotates the valve clockwise to close.
Turn to the direction. Valve open

Standard technical parameters

Indicator

NUMUR standard indicator, easy to install valve accessories such as limit switch, positioner.

Output shaft

Plating nickel alloy steel, high precision one-piece output shaft in accordance with NAMUR, with ISO5211

DIN3337 standard.

Cylinder

ASTM6005 die-casting aluminum alloy cylinder, with hard anodized

End caps

Die-casting aluminum powder spraying a variety of colors

Pistons

Double piston rack, adopts hard anodized aluminum or cast steel galvanized processing, symmetric mounting position, fast operation, long service life, simple upside down the piston can change the direction of rotation.

Travel adjustment

Two independent stroke adjustment screws can be easily and precisely adjustable of ?5 ?open and closed position.

Spring

High performance springs using high quality materials, coating treatment, pre-loading assembly.

Simply remove

the single-acting actuator, by changing spring quantity to meet different torque output range.

Bearing

Bearings, guide: Using low friction, long-life compound material, to avoid the direct contact between metals, repair and replacement are easy and convenient.

Seal

Normal temperature using nitrile butadiene rubber. High or low temperatures using fluorine rubber or silicone rubber

Control

Double acting, single acting

Annex

Available accessories: Reversing solenoid valve, Limit switch/ position monitoring switch, positioner, hand wheel device.

Precautions

When performing large-scale inspections of actuators, it is necessary to completely discharge the remaining pressure in the pipeline.
When the actuator is in operation, do not step into the transmission or place your hand in the transmission.
To prevent an electric shock, do not touch the wire connection (exposed live body) on the actuator with the solenoid valve or switch.
Be sure to test in the event of a power outage. Also, do not touch these charged bodies with wet hands.

Pneumatic valve accessories

Annex 1 Reversing solenoid valve
The electronic control operation for "turning on" or "off" the pneumatic valve acts as a switching air source. The solenoid valve complies with the NAMUR connection standard and can be divided into a mounted type and a separate type. The double-acting pneumatic actuator is equipped with a two-position five-way solenoid valve, and the single-acting two-position three-way solenoid valve can be manually operated. The structure is simple, compact and has a long life. The solenoid valve coil voltage has AC220V or DC24V low power consumption, and the explosion-proof encapsulation Ex m II BT4 and the explosion-proof Ex d II BT4 are optional. The company's solenoid valve is directly mounted on the actuator in a plate type.

Working principle Electromagnetic valve junction box wiring diagram

Annex 2 Limit switch (also known as echo)
The limit switch box feeds back the pneumatic valve position signal to the control room, directly mounted on the top of the pneumatic actuator, in accordance with VDI/VDE3845, built-in mechanical switch or magnetic induction proximity switch, and optional explosion-proof.
Built-in 2 mechanical switches 2-SPDT wiring diagram
Rating: 16A 1/2HP 125/250V AC 0.6A 125V DC 0.3A 250V DC

Annex 3 Air filter pressure reducing valve
Including air pressure reducing valve, filter, oil mister.

Function: gas source is stable, clean, and lubricates moving parts

Annex 4 Electrical Positioner
The electric positioner is one of the important accessories of the pneumatic regulating valve. It accepts 4-20mA control valve opening degree, and is divided into mechanical type and intelligent electronic type.

Mechanical positioner wiring diagram

Common faults and handling

OUR COMPANY