Honeywell – SM120-11/4A 11/4in + 11/2in Diaphragm Safety Valve

MPN: SM120-11/4A · Brand: Honeywell

Price on request

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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	Active
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can SM120-11/4A be shipped?

SM120-11/4A 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 SM120-11/4A 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 SM120-11/4A 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 SM120-11/4A, subject to availability and destination.

The SM 120 diaphragm safety valve provides the last line of security for heating systems if the prescribed safety controls fail. In an emergency they must therefore have the capacity to discharge the whole contents of a cylinder in the form of steam Features & Benefits:

For heating systems to DIN 4751

Construction tested to TRD 721

Protected against subsequent resetting

For large output systems up to three valves can be fitted in parallel with separated discharges

Honeywell SM120-11/4A — The SM 120 diaphragm safety valve provides the last line of security for heating systems if the prescribed safety controls fail. In an emergency they must therefore have the capacity to discharge the whole contents of a cylinder in the form of steam. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.