Radiator Bleed Valve Perfexim 1/2" G1/2 PN10 (model 4216, MPN 20-402-0000-000)

Perfexim Radiator Bleed Valve 1/2" G1/2 PN10 (model 4216) is a manually operated air vent designed for steel radiator installations. It allows controlled release of trapped air from the heating circuit to restore proper water circulation and improve heat transfer. The valve is suitable for use in residential and light commercial radiator systems where a threaded G1/2 connection is required and a PN10 pressure rating is appropriate.

Advantages

The bleed valve provides a reliable and simple method to eliminate air pockets without special tools. Its G1/2 threaded connection ensures compatibility with standard radiator fittings, and the PN10 rating matches common low-pressure heating installations. Manual operation allows precise control over venting; the valve’s compact design fits neatly into radiator side or top connections.

Suitable for

• Steel radiators in residential buildings
• Light commercial radiator installations
• Manual air venting of central heating systems
• Replacement of existing G1/2 radiator vents

Key specifications

• Connection size: 1/2" (G1/2 threaded)
• Pressure rating: PN10 (suitable for low-pressure heating systems)
• Operation: manual bleed valve for controlled air release
• Compatibility: designed for steel radiators and standard radiator fittings
• Design: compact, suitable for side or top radiator ports

How to use

Ensure the heating system is at low pressure and, ideally, cooled down before venting. Place a cloth or small container beneath the valve to catch any water. Use an appropriate bleed key or screwdriver to turn the valve slowly counterclockwise until you hear air escaping. When water starts to flow steadily without sputtering, close the valve by turning it clockwise to the snug position. Check system pressure after venting and top up the system water if required according to the boiler or system manufacturer’s instructions.

Usage recommendations

Vent radiators periodically—especially at the start of the heating season—and after system maintenance to maintain efficient circulation. Avoid over-tightening the valve; ensure a firm but not excessive closure to prevent damage to threads or the sealing surface.