Description

HONEYWELL E121 Automatic Air Vent Valve is a reliable automatic venting device and is suitable for venting of air or gas from heating systems or heat process installations. E121-3/8A = Standard version, Connection size R 3/8″ E121-1/2A = Standard version, Connection size R 1/2″ Description Honeywell Brass Auto Airvent Screwed End Automatic Air Vent E121 Application: The E121 Air Vent is a reliable automatic venting device and is suitable for venting of air or gas from heating systems or heat process installations. Features: • With the Z121 A shutoff valve fitted, cleaning or replacement of the seal and inner components can be carried out without draining the system. Range of Application: Hot water heating systems, radiators, wall and ceilingmounted air heaters, air collection vessels, pipework circuits, boilers and air separators. Not suitable for mineral oil or liquids with mineral-oil-based additives. Specifications: Operating temperature: max. 110°C (230°F) Operating pressure :max. 10 bar (145 P.S.I.) Connection sizes: R 3/8″ and R 1/2″