Air separator with insulation DN25 Stickn BOSCH Installation accessories H-SA25

The Air separator with insulation DN25 by Stickn is a compact component for hydronic systems that removes entrained air and supports stable circulation. Designed for BOSCH installation accessories (model H-SA25), this DN25 unit integrates thermal insulation to reduce heat loss and facilitate mounting in residential and light-commercial heating or cooling circuits. The product is intended to be fitted into supply or return lines where air collection and thermal retention are required.

Advantages

This air separator combines air removal and insulation in a single DN25 housing to improve system efficiency and reduce noise from air pockets. The integrated thermal cover minimizes heat loss at the installation point, which helps maintain loop temperatures and reduces unnecessary energy transfer. The compact design simplifies installation in confined plant rooms and allows straightforward connection to standard DN25 pipework.

Suitable for

• Residential boiler and hydronic heating systems
• Light-commercial heating installations
• Cooling circuits with need for air separation
• Supply and return lines where DN25 connections are used

Key specifications

• Connection diameter: DN25 compatible with standard DN25 pipe fittings
• Function: air separation to remove entrained air from circulating fluid
• Thermal insulation: integrated cover to reduce local heat loss
• Application: suitable for heating and cooling circuits in domestic and light-commercial systems
• Installation orientation: inline fitting for supply or return lines

How to use

Install the air separator in the pipe section recommended for air collection—commonly on the return line at a high point or where flow disturbances occur. Ensure system pressure is relieved before making connections and follow manufacturer torque and sealing instructions for DN25 connections. After installation, purge the system according to standard commissioning procedures to remove trapped air and verify proper operation. Periodic checks during maintenance are recommended to confirm the separator remains free of blockages and the insulation cover is intact.

Usage recommendations

For reliable performance, combine the air separator with routine system purging and use compatible DN25 fittings and valves. Avoid exposing the insulation cover to abrasive contact or solvents; inspect the unit during scheduled maintenance and replace if damage or persistent air ingress is observed.