Ductile Iron Air Valves

Certified to NSF/ANSI/CAN 61/372

Tired of air valves filled with nasty water and exhaust vents full of water?

We have the answer with a Ductile Iron Air Valves!

Air valves are in every system and often forgotten about until the valve is needed!

Maintenance on the Av-Tek 5300 series is simple and NOT needed often

We keep our products in stock to make sure
we can ship to our clients in a timely manner.

There are three main functions an air valve will perform:

The Av-Tek series 5300 valves work to keep the air out of the pipeline as needed according to the application. The standard ductile iron valve comes only a dual function air valve. It will perform the first and second functions. In order to have the third function a series 5301 poly air valve is threaded into the valve.

What is different with the Av-Tek air valve?

No dead (waste) water allowed back into the system!

Standard air valves seal any where between 20-30 psi, so this means from the time you introduce water into the pipe, until you hit that pressure to seal the valve. If an exhaust pipe is attached to the valve, this will be filling with water while the pipe is pressurizing. Once pressure is met, this water will stay until there is a vacuum. This could be weeks, months or even years. Then a transient wave, or a pump turns off and causes a vacuum to enter the system, as the valve opens, it will not allow all that water back into the system!

Designed with a draining system to avoid waste water into your system!

With the Av-Tek series 5330 or 5340 valves, you will never have to worry about wastewater coming into your system when a vacuum happens. With a drain port cast into the exhaust vent, you simply attach a drain line with an isolation valve or check valve!

Maintenance is easy!

5 bolts retain the cover to the body, simply remove the bolts and take off the cover. The 5300 series ductile iron valves always come standard with heat fusion bonded epoxy, this is an upgrade option from your standard valves. We also use an O-Ring seal in place of a paper gasket ensuring you

Simple design with out common failure points

Traditional air valve valves have a guide as part of the float. This guide is held in place by a bushing, if your air valve stays in the closed position (which they do) and you have hard water (which you likely do) corrosion will build up next to the guide and bushing causing the valve to no longer operate. Testing is simple! Simply isolate the air valve open the drain and see if the float goes down as it should. If it does not try out an Av-Tek Valve!

Common applications:

    • Pressure Reducing
    • Pressure Sustaining
  • Flow Control
  • Tank/Reservoir Filling
  • Hydroelectric bypass
  • Shutoff Valve high pressure/high flow

What many are finding to be true and you will too, is that by using higher quality valves, you get a longer life out of the valve, less maintenance, and drip tight shut off.

Feel free to reach out to us for all your questions you might have in regards to butterfly valves in your system.

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