Armstrong 814–816 Inverted Bucket Steam Traps

Larger cast-iron 800-series inverted-bucket traps for higher condensate loads — capacities from 6,900 to 20,000 lb/hr at up to 250 psig operating pressure.

Key advantages

High capacity — 814: 6,900; 815: 11,000; 816: 20,000 lb/hr.
250 psig MOP — MAP 250 psig @ 450 °F across 814–816.
Same IB mechanism — free-floating SS internals, continuous air venting, repairable cast-iron body.
Larger connections — up to 2½ in. on 816.

Typical applications

Higher-load steam equipment needing side-inlet/side-outlet inverted-bucket drainage.
Horizontal screwed NPT/BSPT installs from 1…2½ in. by model.

Selection guide

814 — 6,900 lb/hr; MOP 250 psig; 1 / 1¼ in.
815 — 11,000 lb/hr; MOP 250 psig; 1 / 1¼ / 1½ / 2 in.
816 — 20,000 lb/hr; MOP 250 psig; 2 / 2½ in.
MAP — 250 psig @ 450 °F.
Order data — model, connection, max working pressure/orifice, options (CV, thermic vent, etc.).

Common mistakes

Selecting by pipe size alone without checking lb/hr capacity curves.
Confusing 814–816 with smaller 800–813 connection ranges.
Omitting differential pressure when stating capacity needs.
Steam & condensate

When to RFQ / what to tell us

Model or target capacity/pressure.
Connection size; NPT vs BSPT; options.
Quantity; ship-to country.

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Specs

Spec	Value
SKU	254256
Brand	Armstrong International
Model	814 / 815 / 816
Product type	inverted bucket steam trap
Max allowable pressure	250 psig @ 450 °F (17 barg @ 232 °C)
Max operating pressure	250 psig (17 barg)
Capacity	6,900 / 11,000 / 20,000 lb/hr by model
Process connection	Screwed NPT and BSPT (1–2½ in. by model)
Notes	Specs from Armstrong Series 800 product page (814–816 rows).

Documents

Armstrong Series 800 inverted bucket product page

FAQ

Q: When do I need 816 vs 815? A: Match condensate load and connection — 816 reaches 20,000 lb/hr with 2 / 2½ in. connections.

Q: Same options as 800–813? A: Series options (check valve, thermic vent, etc.) are family features — confirm availability per model on RFQ.

Q: What should I send for a quote? A: Model, connection, P/T, capacity, options, quantity. Compatible with systems using Armstrong 814–816 if you need a drop-in check — we do not claim authorized-dealer status.