Discharges free and dissolved air
Air bubbles in the system cause noise, corrosion and pump performance loss; the separator automatically discharges this air.
Product group · Pressure Vessels
Air and Dirt Separators
Air separators remove free and dissolved air from system water, while dirt separators remove circulating particulates; these two contaminants are among the most common causes of reduced pump and heat exchanger performance. At Denfor Endüstriyel, we supply air and dirt separators, either standalone or in a combined shell, sized to line diameter and flow rate.
Flow rateSized to line diameter
Working pressure3 – 10 bar
TypeAir / dirt / combined
DischargeAutomatic or manual valve
Why it matters
What does an air and dirt separator do?
It protects pump and heat exchanger performance by removing air and particulates from system water.
Captures particulates and sediment
Circulating particulates such as rust, scale and installation debris are captured inside the separator, preventing clogging of exchanger plates and pump impellers.
Extends pump and heat exchanger life
As wear and cavitation risks from air and particulates are reduced, pump seals and exchanger surfaces keep operating efficiently for longer.
Easy cleaning via the discharge valve
The discharge valve at the bottom allows accumulated sediment to be easily drained periodically without stopping the system.
Types
Air and dirt separator subtypes
All three separate out contaminants at low flow velocity; what differs is which contaminant they target.
Air separator
Discharges free and dissolved air from system water via an automatic air vent valve; used continuously both at initial commissioning and during operation.
- Automatic air discharge
- Reduces noise and cavitation
- Critical at initial commissioning
Dirt (sludge) separator
Captures circulating rust, scale and installation debris particles; especially recommended for exchanger and pump protection in renovated or older installations.
- Particle capture
- Exchanger/pump protection
- Important for renovated installations
Combined air and dirt separator
Combines both air and dirt separation functions in a single shell; preferred in boiler rooms with limited installation space.
- Two functions in one shell
- Saves installation space
- A widely preferred solution
Selection criteria
What data determines the right air/dirt separator?
Selection cannot be made without the first two items. The rest determine type and fittings.
ParameterWhy it mattersWhat we need from you
Line flow rate
Shell diameter is determined by the flow rate of the line it is installed on.
m³/h
Targeted contaminant
Whether air, dirt, or both are the priority to remove.
Air / dirt / combined
Working pressure and temperature
Must match the system's operating conditions.
bar / °C
Discharge type
An automatic air vent valve, or a manual discharge valve.
Automatic / manual
Need for a magnetic element
A magnetic cartridge can be added if iron-based particulates are heavy.
Yes / no
Connection size and installation point
A connection matching line diameter and an installation position (usually just before pump suction).
DN size + installation point
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- Flow rate of the line to be fitted
- Priority issue (air or dirt)
- Working pressure and temperature
- Whether automatic or manual discharge is wanted
- Density of iron-based particulates (for a magnetic element)
- Installation point and existing system dimensions
FAQ
Questions from the field
The questions we encounter most often at the air/dirt separator quote stage.
When is an air separator needed, and when a dirt separator?
An air separator takes priority if the system has air noise, cavitation, or air build-up complaints in radiators; a dirt separator takes priority if there is exchanger/pump clogging or cloudy/dirty water complaints. A combined model is preferred when it is unclear.
Where should it be installed?
Installation is generally recommended just before pump suction, close to the system's hottest and lowest-pressure point; air separates out most easily there.
What does the magnetic cartridge do?
Iron-based (magnetite) particles may not be fully captured by normal filtration; the magnetic cartridge additionally captures these particles, strengthening exchanger and pump protection.
How often does it need maintenance?
Periodic sediment draining from the discharge valve is recommended; more frequent checks in the first few months are useful for renovated or older installations.
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 line flow rate and which issue you want to prioritize, and let's work out the right separator for your system together.
Related products
Other related product groups
Complementary equipment you may need for your project.
Magnetic Dirt Separators and Magnetic Filters
Dedicated extra protection against iron-based particulates.
Hydraulic Separators and Packaged Separator Units
Hydraulic separators that also handle air separation and sediment collection.
Calorifiers (Single / Double Coil)
Calorifiers and heating circuits fed with clean water.