Compact 2 way/ 3 way ball valve with pneumatic actuator requires compressed air to work, which has such advantages as small fluid resistance, simple structure high performance and reliable sealing. It has been widely used in petroleum, chemical industry, power generation, paper making, atomic energy, aviation, rocket and other sectors, as well as daily life.

Specification

• Model: CHN-PBV-40A
• Actuator Model: CHN-AT063D, CHN-AT075D, CHN-AT088D
• Power Source: Compressed Air
• Actuator Type: Double Acting
• Number of Ways: 2 Way, 3 Way
• Ball Valve Type: Threaded Type, Flanged Type, PVC True Union Type
• Port Size: 1-1/2 inch (DN40, 40mm)
• Bore Size: 63mm, 75mm, 88mm
• Pressure Range: ≤1000PSI (6.9MPa)
• Air Pressure: 0.3 ~ 0.8MPa
• Air Supply Port: 1/4 inch
• Environment Temperature: -10°C to 60°C
• Medium Temperature: -10°C to 180°C
• Seat Material: Plastic (PTFE)
• Ball Valve Material: Stainless Steel (SS 316/ 304), PVC
• Actuator Body Material: Aluminum Alloy

Body Dimension (Unit: mm)

2 way/ 3 way, stainless steel, threaded type

2 way/ 3 way stainless steel, flanged type

2 way, PVC true union type

Pneumatic Actuator Dimension (Unit: mm)

CHN-AT063D

CHN-AT075D

CHN-AT088D

Note: Threaded type ball valve and PVC true union ball valve match with CHN-AT063D actuator, 2 way flanged type ball valve matches with CHN-AT075D actuator, and 3 way flanged type ball valve matches with CHN-AT088D actuator.

Three Way Ball Valve Flow Pattern

T Type:

L Type:

Tips: Pneumatic actuated ball valve troubleshooting

Pneumatic ball valve has no feedback signal.

The signal line of the pneumatic ball valve consists of a pair of control signal lines and a pair of feedback signal lines. When the PLC gives a signal to the valve, the signal is converted in the positioner of the regulating valve, and the action of the valve stem is controlled by the air source pressure. The stroke of the valve stem transmits the opening of the valve through the feedback signal of the regulating valve.

If there is no feedback signal from the pneumatic ball valve, use a multimeter to check whether there is voltage at each contact. To check for proper wiring connections, check for damaged signal wires, and check for loose signal wires.

The valve cannot be closed to the zero position.

• It is actually closed to the zero position, but the feedback indication is not there. This is a signal problem, which can be solved by adjusting the positioner.
• It is actually not closed tightly, and the most likely cause is that the valve sealing gasket is damaged. Or the rotation of the valve stem connection is blocked, which requires dismantling the valve body during maintenance, and contacting the pneumatic ball valve manufacturer to replace the sealing gasket and add lubricating oil to the rotating part to make it work normally.