Air Vents

The most efficient way to control air in irrigation systems is by proper use of air valves. Control of the air is very important and, depending on the circumstances, both the presence of air and its absence can cause severe problems and damage to the system.

Problems and damages due to the presence of air in pipelines are:

• The impedance of flow in pipelines - obstruction up to complete stoppage, at times.
• Serious head losses resulting in energy losses.
• Water hammer damage to pipes, accessories, and fittings.
• Inadequate supply of water to sections of crops due to flow impediment and accumulation of pressure losses at the end of systems.
• Inadequate water supply to crops due to inaccurate meter and automatic metering valve readings.
• Serious damage to spinning internal parts of meters, metering valves, sprinklers, and sprayers.
• Corrosion and cavitation.
• Physical danger to operators from air-blown flying parts

Air Vents /Vacuum Valves are used to exhaust large quantities of air upon system start-up, as well as allowing air to re-enter the line upon system shut down or system failure. As water enters the valve, the float will rise, closing the discharge port. The valve will remain closed until system pressure drops to near zero psi. It will not open and release any accumulation of air while the system is under pressure. Air Vents offer more air release capacity than other vents of similar size. Our proven design provides reliable operation reduces water hammer incidents. Made of corrosion-resistant reinforced UV protection nylon – no metal parts to rust or corrode. Whether it's releasing large volumes of air at the pump station, releasing entrapped air in the line or breaking vacuum downstream of valves, Dutco Tennant LLC offers a variety of styles and sizes to fit almost every application.

Features & Benefits

• Ensures maximum protection of the irrigation system with proper sizing and placement.
• Aerodynamic float design ensures vent closure as water fills the system, remains open when air pressure reaches 5 – 12 psi depending on the model.
• Large capacity vents dampen water hammer preventing pipes and fittings from cracking or bursting.
• Unique rolling seal feature allows gradual opening, closing and self-cleaning.
• Made of corrosion-resistant reinforced UV protected nylon- no metal parts to rust or corrode, no need for spare parts.
• Guardian with Shrader valve is ideal for measuring local line pressure.

With over four decades of experience, an abundance of knowledge and a highly efficient team of qualified people, we can be your ideal partner for all your MEP Supplies needs.