Specification:
Item name: Air Vent Valve
Entrance size: 3/4inch
Connection form: BSPT external thread

Technical parameter:
Pressure rating: PN10
Operating pressure range: 0.1-10Bar
Operating temperature: the water temperature is 50 degrees centigrade
Size: 125 X 40mm/4.92 X 1.57inch. (height x outside diameter)

Product description:
1.The vacuum intake and exhaust valve is a power type quick intake and exhaust valve, suitable for various irrigation system. When the system is water injected, the air valve discharges a large amount of air in the pipeline. When the system is emptying, the air valve attracts a large amount of air to prevent the vacuum negative pressure.
2.The valve adopts advanced compound gas dynamics design, with fast intake and exhaust, can avoid air accumulation, prevent formation of negative pressure, has good sealing performance if it is low pressure.


Features and advantages:
Small size, simple structure and reliable performance.
The valve body adopts the direct passage design, the inlet and outlet are large in size and large in flow.
Sealed float moves long length, Prevents floating balls from blowing high velocity air, resulting in premature exhaust closure, and does not affect air inhalation or removal.
Dynamic low pressure seal. It can maintain good tightness at low pressure (0.3bar) and avoid leakage.
All components have advantages of corrosion resistance, low maintenance frequency and long service life.

Working principle:
In the process of water injection, a large amount of air is rapidly discharged from the intake and exhaust ports; After the water enters the air valve chamber, the float rises with the liquid level and closes the quick intake and exhaust port. Valve design in accordance with gas dynamics and anti blow design of floating ball, before the water enters the air valve, the float is prevented from blowing by the high velocity air stream, causing the exhaust port to prematurely close.
A negative pressure difference is formed when the system is evacuated, and the air pushes the ball downward. The power type quick intake and exhaust vents are opened, and air enters the air valve to avoid negative pressure in the system.
When the system is under pressure, and the intake and exhaust valves remain closed.

Note:
Please allow 1-2cm errors due to manual measurement
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same