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High Performance Pneumatic Air Actuator Easy To Install Valve Accessories

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High Performance Pneumatic Air Actuator Easy To Install Valve Accessories

China High Performance Pneumatic Air Actuator Easy To Install Valve Accessories supplier

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Product Details:

Place of Origin: China
Brand Name: ACKO
Certification: CE ISO
Model Number: DA/SR-45......350

Payment & Shipping Terms:

Minimum Order Quantity: Negotiation
Price: Negotiation
Packaging Details: standard sea worthy packing
Delivery Time: 7-14 working days
Payment Terms: T/T
Supply Ability: 100 sets per week
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Detailed Product Description
Name: Pneumatic Actuator Certificate: CE ISO
Feature: Spring Return Apply: Industry
Temperature Of Media: Normal Temperature Power: Pneumatic
High Light:

air operated valve actuators

,

air torque actuators

 

 

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

 

A Pneumatic actuator mainly consists of a piston or a diaphragm which develops the motive power. It keeps the air in the upper portion of the cylinder, allowing air pressure to force the diaphragm or piston to move the valve stem or rotate the valve control element.

Valves require little pressure to operate and usually double or triple the input force. The larger the size of the piston, the larger the output pressure can be. Having a larger piston can also be good if air supply is low, allowing the same forces with less input. These pressures are large enough to crush objects in the pipe. On 100 kPa input, you could lift a small car (upwards of 1,000 lbs) easily, and this is only a basic, small pneumatic valve. However, the resulting forces required of the stem would be too great and cause the valve stem to fail.

This pressure is transferred to the valve stem, which is connected to either the valve plug (see plug valve), butterfly valve etc. Larger forces are required in high pressure or high flow pipelines to allow the valve to overcome these forces, and allow it to move the valves moving parts to control the material flowing inside.

 

The valves input is the "control signal." This can come from a variety of measuring devices, and each different pressure is a different set point for a valve. A typical standard signal is 20–100 kPa. For example, a valve could be controlling the pressure in a vessel which has a constant out-flow, and a varied in-flow (varied by the actuator and valve). A pressure transmitter will monitor the pressure in the vessel and transmit a signal from 20–100 kPa. 20 kPa means there is no pressure, 100 kPa means there is full range pressure (can be varied by the transmitters calibration points). As the pressure rises in the vessel, the output of the transmitter rises, this increase in pressure is sent to the valve, which causes the valve to stroke downward, and start closing the valve, decreasing flow into the vessel, reducing the pressure in the vessel as excess pressure is evacuated through the out flow. This is called a direct acting process.

 

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.

High Performance Pneumatic Air Actuator Easy To Install Valve Accessories

 

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

High Performance Pneumatic Air Actuator Easy To Install Valve Accessories

 


 

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

 

 

High Performance Pneumatic Air Actuator Easy To Install Valve AccessoriesHigh Performance Pneumatic Air Actuator Easy To Install Valve Accessories

 

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

 

High Performance Pneumatic Air Actuator Easy To Install Valve Accessories

 

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

 

High Performance Pneumatic Air Actuator Easy To Install Valve Accessories

 

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.

High Performance Pneumatic Air Actuator Easy To Install Valve Accessories

 

Mechanical positioner wiring diagram

 

High Performance Pneumatic Air Actuator Easy To Install Valve Accessories

 

Common faults and handling

 

 

Stage Fault Description Fault Cause Remedy
I/P check I/P air pressure output does not change Gas source failure Check if the air supply valve is open
      Check if the pipeline is blocked
    Control signal failur Check if the signal line is disconnected
      Control signal line "+" "-" is reversed
    I/P damage replacement
Adjustment valve The regulating valve will not move or the action will not be in place No air source Check if the air supply valve is open
    Gas circuit connection is incorrect Check the correctness of the gas circuit connection
    Gas circuit blockage Check and ventilate the circuit
    Give way Check for leaks and fix
    Adjustment valve stuck Contact the aircraft to solve
    Regulating valve and accessory connection is not strong Check the connection of the regulating valve and accessories, it should be fixed firmly, no looseness
    I/P failure Check I/P
    Solenoid valve is not powered or de-energized Check solenoid valve power
    Valve not in automatic position Switch to automatic position
    DCS has a mandatory signal Contact run processing
    Some valves must be reset to the local after losing gas. Local reset
  Position transmitter current output is not allowed Not securely connected to the regulating valve Check the connection, it should be fixed firmly, no looseness
    Zero position, range has changed Re-zeroing, measuring the whole
    Position transmitter is damaged Potentiometer is bad
  Travel switch does not work Incorrect installation re-install
    Loose travel switch readjust
    Travel switch damage replace
  Regulating valve moves in the opposite direction Locator direction adjustment error readjust

Contact Details
Bluetrend (Shanghai) Industrial Equipment Co., Ltd.

Contact Person: Ms. karen

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