Honeywell – E121-1/2A E121 Automatic Air Vent

MPN: E121-1/2A · Brand: Honeywell

Price on request

Discontinued by Honeywell — we can still source the original E121-1/2A (new, used or refurbished, subject to availability). Request a quote below.

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12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

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Quick facts

Availability	Confirmed on request
Category	Honeywell HVAC Field Devices (valves, actuators, sensors)
Lifecycle	Discontinued
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

Can I still buy the E121-1/2A now that it is discontinued?

Yes. Honeywell has discontinued the E121-1/2A, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.

When can E121-1/2A be shipped?

E121-1/2A is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up E121-1/2A in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for E121-1/2A and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for E121-1/2A, subject to availability and destination.

E121 Automatic Air Vents are ideally suitable for hot water heating systems, radiators. Inside the automatic air vent there is a floater which operates a lever according to the water level. When there is no water in the housing, then the floater opens the valve. Air can therefore be vented from the heating system during filling. When the heating system has been filled, the inflowing water closes the valve and the vent is shut off. Water usually contains oxygen which bubbles off during operation of the system and collects at the highest point. The automatic air vent must therefore be fitted at the air collection position Features & Benefits:

Features wide range of application

With the Z121 A shutoff valve fitted, cleaning or replacement of the seal and inner components can be carried out without draining the system

High grade, heat-resistant synthetic material float

Heat-resistant elastomer seal components

Honeywell E121-1/2A — E121 Automatic Air Vents are an reliable automatic venting device and is suitable for venting of air or gas from heating systems or heat process installations. Discontinued by Honeywell — no longer in the current range. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.