Manual Valves

There are a number of different types of pneumatic control valves for different systems.
Ball Valves - a simple manual control valve that is a ball with a hole bored through it to regulate the flow of air. A quick and simple way to shut off the flow of gas.
Globe valves - a precision valve with a linear motion, suitable for controlling the flow of air or gas.
Butterfly Valve - a manual control valve used to regulate the flow of air or gas in large pipe systems.
Diaphragm valve - another manual control valve that uses a flexible diaphragm to regulate the flow of air or gas. They are commonly used in applications where precise control is required.

Pneumatic manual control valves are used to control the flow of compressed air or gas in a pneumatic system. They are manually controlled by a user for precise control over the volume of air or gas flowing through the system.

They can control the speed and direction of pneumatic actuators; control the flow of air or gas in a pipeline; regulate the temperature or level of a fluid in an industrial process; provide an emergency shut-off feature in case of a system failure or malfunction.

Often manual control valves are less expensive than automatic valves. They are much simpler to operate than an automatic valve and are more reliable and less likely to fail. Also, in the event of an emergency, and if power fails, a manual valve can still shut off the system and prevent damage and injury.

Manual Pneumatic control valves use compressed air to regulate and control the flow of a fluid through a pipeline system. By using a combination of mechanical components and compressed air, they open or close a valve, blocking or allowing the flow of liquid.

An actuator is part of the valve that responds to changes in air pressure, opens and closes the valve. It is connected to a control valve body that contains the disc or plugs that regulate the flow of liquid.

When air pressure is applied to the actuator, it pushes a piston or diaphragm, which opens or closes the valve.

The flow of liquid through the valve is also controlled by the position of the disc or plug. This can be adjusted by changing the air pressure in the actuator.

Pneumatic control valves are most commonly used in industrial applications where precise control of liquids is required. They’re also relatively easy to operate and maintain, and they’re less expensive than electric or hydraulic valves.

There are a number of steps to follow if you wish to install a manually operated pneumatic control valve.

1. Choose the right type of valve. Make sure the type of valve you’re installing is the right valve for the job. Factors such as maximum pressure and temperature, what flow rate you want and the type of liquid being controlled will influence the kind of valve you install.
2. Mounting the valve. Mount the valve in a suitable position, preferably close to the process line, to ensure accurate control.
3. Connect the air supply. Connect your air supply to the valve’s actuator. Also, install a pressure regulator, a filter and a lubricator upstream from the valve to ensure the supply of clean, lubricated air.
4. Connect the process piping. Connect the piping to the inlet and outlet of the valve. Make sure the valve is installed in the correct liquid flow direction.
5. Calibration. Using a hand-held calibrator or a digital valve positioner, set the desired actuator pressure for the required valve position.
6. Check for leaks. Very important. Check for leaks to avoid malfunctions and to ensure efficiency is maintained.
7. Commissioning. Once you have installed and calibrated the valve, and checked for leaks, test the valve’s responses to changes in the control signal, to make sure the valve is working correctly.
8. Maintenance. Once all of the above has been completed successfully, and the valve is working to specifications, ongoing maintenance, as per the manufacturer's specification, should be carried out. Do this at regular intervals over the life of the valve.
    

This depends upon where you are based and the freight method chosen. If the express freight option is selected it is usually next day delivery to metropolitan areas in Australia for under 5kg. If free freight has been selected it will go by road freight which can be anywhere from 1 to 10 days depending upon your location. It usually averages 3 days.

All of our products come standard with a 12 month warranty. The good news is we have very strict quality controls and all valves leave our warehouse tested (full material and testing certificates to API598 are available) and inspected so there are rarely any issues. Also once your valve is in and operating it will most likely continue to do so for a very long time.