Armstrong 11/22/13-AV Free-Floating Lever Air/Gas Vents

All-stainless guided lever air/gas vents for positive venting under pressure, with welded body/cap and free-floating lever mechanism shared with Armstrong steam traps.

Key advantages

All-SS construction — 304-L body/cap and working parts; welded, gasket-free, tamperproof.
High leverage capacity — elliptical float design; capacity up to 115 SCFM (195 m³/h) class per OEM.
Guided lever seating — proper valve seating under all operating conditions.
Three models — 11-AV, 22-AV, 13-AV covering different connections and pressure ratings.

Typical applications

Venting air/gases under pressure on process and utility systems.
Corrosive internal or external environments where stainless is required.
Systems needing compact vents rated up to 600 psi class @ 100 °F.

Selection guide

11-AV — MAP 500 psig @ 100 °F / 440 psig @ 500 °F; MOP 400 psig; connections ½ in. / ¾ in.
22-AV — MAP 600 psig @ 100 °F / 475 psig @ 500 °F; MOP 600 psig; connection ¾ in.
13-AV — MAP 570 psig @ 100 °F / 490 psig @ 500 °F; MOP 570 psig; connection 1 in.
Body — 304-L stainless steel throughout.
CRN — Canadian Registration Numbers published by province on the OEM page (0E8807.x series).

Common mistakes

Picking connection size without checking model MOP/MAP at operating temperature.
Treating these as steam traps — they are air/gas vents using similar free-floating lever mechanisms.
Ignoring temperature derate (ratings differ at 100 °F vs 500 °F).
Steam & condensate

When to RFQ / what to tell us

Model preference (11-AV / 22-AV / 13-AV) or connection size (½ / ¾ / 1 in.).
Operating pressure and temperature; fluid (air/gas).
Quantity, ship-to country, any CRN jurisdiction needs.

Request a Quote · Get selection help

Specs

Spec	Value
SKU	183599
Brand	Armstrong International
Model	11-AV / 22-AV / 13-AV
Product type	free-floating lever air/gas vent
Body material	304-L stainless steel
Max operating pressure	11-AV 400 psig; 22-AV 600 psig; 13-AV 570 psig
Max allowable pressure	11-AV 500 psig @ 100 °F; 22-AV 600 psig @ 100 °F; 13-AV 570 psig @ 100 °F (see OEM derates @ 500 °F)
Process connection	11-AV ½ in. / ¾ in.; 22-AV ¾ in.; 13-AV 1 in.
Notes	Specs from armstronginternational.com Series 11/22/13-AV page and DataSeries112213AirGasVent_EN.pdf.

Documents

Armstrong 11/22/13-AV data sheet (PDF)

FAQ

Q: Which model for ¾ in. service at ~500 psig? A: Compare 11-AV (MOP 400) vs 22-AV (MOP 600) at your temperature. State P/T in the RFQ for a firm pick.

Q: Are body and internals stainless? A: Yes — OEM states body, cap, and working parts are stainless; welded sealed unit.

Q: What should I send for a quote? A: Model or connection, operating P/T, fluid, quantity, ship-to. Compatible with systems using Armstrong 11/22/13-AV if you need a drop-in check — we do not claim authorized-dealer status.