The siphon spray gun has the paint located directly behind the nozzle and uses airflow to draw the paint upward and cause a paint mist by pressure at the nozzle when spraying. Using a siphon spray gun is more stable to facilitate paint filling or color change, but it is difficult to spray horizontal surfaces. Changes in viscosity can lead to changes in discharge, and the paint can is heavy, so the operator is easily fatigued.
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Siphon Spray gun is suitable for thinner and specialized coating, which can be matched with metal paint and pigments to achieve good spray results. When you need to create a special coating of spatter effect, siphon feed spray gun is the best choice. The design of the siphon spray gun is more intuitive and traditional, which makes the spraying process more convenient.
The siphon spray gun is to use paint placed in a higher position than the gun to create a liquid pressure, making it easier for the liquid to flow into the siphon spray gun and spray smoothly.
Feeding principle of air siphon spray gun:
Air siphon spray gun feeding is to use the process of gas flow, which will produce negative pressure, and the faster the flow rate, the more pressure reduction, relying on the high speed flow of air in the air siphon spray gun to stay at the nozzle and to generate negative pressure. The paint from the paint cup is located below the air siphon spray gun and atomized.
Characteristics of Air Siphon Spray Gun:
The air siphon spray gun is a type of air atomizing gun, which is a more precisely external mixing air gun. It is composed of a spray gun and a siphon paint cup attached to the underside of the gun. The air siphon spray gun has an externally mixed air nozzle, which ejects a hollow column of air. During operation, it can create a vacuum around the paint nozzle and thus draw the paint up from the air siphon spray gun cup.
Since the weight of the air siphon spray gun and the paint can are borne by the operator with one hand during the spraying operation, the worker can be very fatigued when doing the spraying workd for a long time. Therefore, the weight of paint is limited by the operating requirements. The capacity of the paint cup is generally small, so air siphon spray gun is suitable for small batches of spraying.
In the auto repair industry, conventional feed guns were widely used in auto body repair. Then with the development of HVLP car painting, most of the conventional feed paint guns in the market turned into siphon paint sprayers to improve work efficiency.
The siphon spray gun uses the principle that negative pressure is generated during the flow of gas, and the faster the flow rate, the more the pressure is reduced. Gravity feed gun paints by its own gravity and the negative pressure formed at the front of the paint nozzle, and mixed with air atomization of a spray gun. The paint can is located in the upper part of the spray gun.