Automatically discharges air from the installation
Air vents automatically expel air collecting at the highest points of the installation, such as above manifolds and radiators, preserving circulation.
Product group · Pressure Vessels
Air Vents and Neutralization Units
Air vents are small air cells that discharge, automatically or manually, air collecting at the highest points of an installation; neutralization units are compact units that neutralize the acidic condensate produced by condensing boilers using a granular media bed before it is sent to drainage. At Denfor Endüstriyel, we supply both pieces of equipment in capacities suited to boiler room and manifold/radiator-top applications.
Air vent volume0.1 – 5 L
Neutralization capacitySized to boiler power
Working pressureAir vent: 3 – 10 bar
InstallationAbove manifold / boiler room
Why it matters
What do air vents and neutralization units do?
One discharges air from the installation; the other makes the acidic condensate of a condensing boiler safe to send to drainage.
Makes condensate safe for drainage
The condensate produced by condensing boilers is acidic (around pH 3-5); the neutralization unit passes this water through a granular media bed, raising its pH to meet drainage standards.
Protects the drainage system and the environment
Unneutralized acidic condensate can corrode metal pipes and drainage lines over time; the neutralization unit removes this risk.
Compact, easy-to-maintain design
Air vents are small in volume and maintenance-free; the granular media in neutralization units is periodically checked and renewed.
Types
Subtypes
Both are complementary small items of equipment throughout the boiler room and installation; what differs is their function.
Automatic air vent
With a float mechanism, it continuously discharges collected air without human intervention; suited to mounting above manifolds and radiators.
- Continuous automatic discharge
- Maintenance-free
- Mounted above manifolds/radiators
Manual air vent/valve
Low-cost, simple air discharge points opened and closed by hand; preferred in small installations and at initial commissioning.
- Economical solution
- Suited to initial commissioning
- Simple design
Condensate neutralization unit
Neutralizes the acidic condensate of a condensing boiler by passing it through a granular media bed; capacity is chosen according to boiler power.
- Granular-media neutralization
- Capacity sized to boiler power
- Compliance with drainage standards
Selection criteria
What data determines the right air vent / neutralization unit?
Selection cannot be made without the first two items. The rest determine capacity and installation method.
ParameterWhy it mattersWhat we need from you
Equipment type
Whether air discharge or condensate neutralization is needed.
Air vent / neutralization
Boiler power (for neutralization)
The condensate volume produced depends on boiler power.
kW
Installation point (for air vent)
Above a manifold, above a radiator, or on the main line.
Installation position
Working pressure
System supply pressure for the air vent.
bar
Automatic or manual
Whether continuous automatic or periodic manual air discharge is wanted.
Automatic / manual
Drainage connection (for neutralization)
The size of the line the neutralized water will be discharged to.
DN size
For a quote, having the following is enough
It's fine if you don't have all of it. We'll fill in the gaps together with you.
Create a quote request- Equipment type needed (air vent/neutralization)
- Boiler power (for the neutralization unit)
- Installation point
- Whether automatic or manual is wanted
- Working pressure
- Drainage connection size
FAQ
Questions from the field
The questions we encounter most often at the air vent and neutralization unit quote stage.
Which boilers need a neutralization unit?
For condensing boilers, because the condensate is acidic, a neutralization unit is generally required by regulation or the water authority for installations above a certain power threshold; this should be checked on a per-project basis.
When does the granular media need replacing?
Depending on the boiler's operating hours and condensate volume, it is recommended to check once a year and renew it if needed.
What is the difference between an automatic and a manual air vent?
The automatic type continuously and spontaneously discharges air via a float mechanism; the manual type is a more economical solution that must be opened and closed by hand periodically.
Where should an air vent be installed?
It should be installed at the highest points where air naturally collects (above manifolds, above radiators, the high corners of the installation).
Do you only serve Istanbul?
No. While our office is on Istanbul's Anatolian side (Ataşehir), we supply and ship across Istanbul's European side, the surrounding provinces and the Marmara region, and Turkey as a whole — covering your equipment end to end, from a single source.
Next step
Let's clarify your needs together
Share your boiler power or the installation point for air discharge, and let's work out the right solution for your needs together.
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