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Automatic air vents
E121 Honeywell air vent
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Honeywell E121 automatic air vent for heating systems. Designed for wall and ceiling radiators, air heaters, air collection vessels, in Read moreShow less
Honeywell E121 automatic air vent for heating systems. Designed for wall and ceiling radiators, air heaters, air collection vessels, installation risers, boilers, and air separators. For media: water or water/glycol according to VDI 2035. Max. temperature 110°C, PN10, external thread connection 1/2". Do not use with mineral oil.
Specifications
E121
9991 Items
- Accessory type
- Valve
- Connection size
- 1/2″
- Material
- Brass
- Model
- E121
- Product type
- Valve
- Thread gender
- Male
View full specifications
- Thread size
- 1/2″
Description
Honeywell E121 is an automatic air vent 1/2" PN10 designed for heating systems where efficient system operation, reduced air accumulation, and convenient use are important. The model with a brass body is suitable for radiators, boilers, risers, and air separators, operating with water or a water/glycol mixture in accordance with VDI 2035. This accessory is intended for water and heating installations where reliable air removal from the circuit and stable system operation are essential.
Honeywell E121 automatyczny odpowietrznik 1/2 cala PN10Application of the Honeywell E121 air vent
The E121 automatic air vent is designed for use in heating installations. Its task is to automatically remove accumulated air from the system, helping maintain proper medium circulation and correct operation of the entire installation.
This model can be used on:
- wall-mounted radiators,
- ceiling radiators,
- air heaters,
- air collection vessels,
- installation risers,
- heating boilers,
- air separators.
Thanks to its universal purpose, the air vent is used in many central heating installations and other water-based heating systems where the presence of air can reduce operating efficiency.
Construction and materials
Honeywell E121 is an air vent made of materials selected for operation at elevated medium temperatures. Its solid construction supports durability and reliability in typical installation applications.
- brass body,
- float made of temperature-resistant plastic,
- seat components made of temperature-resistant elastomer.
Using such materials makes the product well suited for heating installations exposed to continuous operation in demanding temperature conditions.
Working medium and operating conditions
The air vent is intended for use with media used in heating installations. It can operate with both water and a water/glycol mixture in accordance with VDI 2035.
The key operating parameters include resistance to medium temperatures up to 110°C and PN10 static pressure. These values allow the device to be used in a wide range of standard heating systems.
The air vent should not be used in installations with mineral oil or with fluids containing mineral oil-based additives.
Operation and service
In everyday use, an important advantage of the E121 model is the ability to simplify maintenance work when the additional Z121 stop valve is used. This solution increases installation service convenience and reduces the scope of work required during maintenance.
Using the additional Z121 stop valve allows the seat and other internal components to be cleaned and replaced without draining the installation.
Main benefits
- automatic air removal from the heating system,
- wide application in various points of the system,
- brass body ensuring durable construction,
- suitability for operation with water and water/glycol according to VDI 2035,
- resistance to medium temperatures up to 110°C,
- 1/2" external thread connection,
- easier servicing after installing the Z121 stop valve.
Technical specifications
| Product type | Automatic air vent |
|---|---|
| Model | E121 |
| Brand | Honeywell |
| Application | Heating installations |
| Mounting locations | Wall and ceiling radiators, air heaters, air collection vessels, installation risers, heating boilers, air separators |
| Body material | Brass |
| Float material | Temperature-resistant plastic |
| Seat component material | Temperature-resistant elastomer |
| Medium | Water or water/glycol according to VDI 2035 |
| Maximum medium temperature | 110 °C |
| Static pressure | PN10 |
| Connection type | 1/2" external thread |
| Usage restrictions | Do not use with mineral oil or fluids with mineral oil-based additives |
| Serviceability | After installing the Z121 stop valve, the seat and other internal components can be cleaned and replaced without draining the installation |
Questions
What is the Honeywell E121 automatic air vent used for?
The device is used to automatically remove air from the heating system. This helps maintain proper system operation and reduce problems caused by air pockets.
Where can the E121 air vent be installed?
The E121 model is intended for use on wall-mounted and ceiling radiators, air heaters, air collection vessels, installation risers, heating boilers, and air separators.
What medium can operate with the Honeywell E121 air vent?
The air vent is designed to work with water or a water/glycol mixture in accordance with VDI 2035.
What is the maximum operating medium temperature?
The maximum medium temperature for this model is 110°C.
What type of connection does the E121 air vent have?
The device is equipped with a 1/2" external thread connection.
Can the air vent be used with mineral oil?
No. The E121 model should not be used in installations with mineral oil or with fluids containing mineral oil-based additives.
What materials is the Honeywell E121 made of?
The body is made of brass, the float of temperature-resistant plastic, and the seat components of temperature-resistant elastomer.
How can servicing be made easier without draining the installation?
Using the additional Z121 stop valve is helpful. This solution allows the seat and other internal components to be cleaned and replaced without the need to drain the installation.