Brass Air Vent Plug (Manual Bleeder Type)

Brass Air Vent Plug DN25 & DN32 | Manual Bleeding Valve for HVAC and Heating Systems

The brass air vent plug is a compact manual venting component designed to release trapped air from closed-loop piping systems. It is widely used in HVAC installations, hydronic heating networks, and hot & cold water circulation systems where air accumulation may affect system performance.

Manufactured from Hpb59-1 brass, this air vent plug offers excellent corrosion resistance, mechanical strength, and long-term stability under continuous water and temperature cycling conditions.

Available Sizes:

• DN25 (1") – standard size for residential and commercial systems

• DN32 (1-1/4") – suitable for larger flow or branch piping systems

Technical Specifications:

• Material: Hpb59-1 brass

• Working pressure: ≤ 1.6 MPa

• Temperature range: -10°C to 120°C

• Thread types: BSP / NPT compatible

• Function: Manual air release / system venting

Design Features:

• Manual top control for controlled air release

• Compact structure suitable for tight installation spaces

• Reliable sealing performance after venting

• Durable brass body resistant to corrosion and scaling

Application Areas:

• Underfloor heating systems

• HVAC water circulation loops

• Radiator and manifold installations

• Hot and cold water pipeline systems

By allowing controlled air release, this air vent plug helps prevent noise, pressure imbalance, and circulation inefficiency caused by trapped air in pipelines, ensuring stable and efficient system operation.