Inverted Bucket Steam Trap - EM Series | Armstrong | Americas

Inverted Bucket Steam Trap – EM Series

Inverted Bucket Steam Trap – EM Series

Product Specifications

Model EM
Capacities To 1058 lb/hr
480 kg/hr
Maximum Allowable Pressure 464 psig
(32 bar)
Maximum Allowable Temperature 482°F
Body Material Forged Carbon Steel
Maximum Operating Pressure 464 psig
(32 bar)
Connection Type Screwed,
Connection Size (inches) 1/2″ (15 mm)
3/4″ (20 mm)
1″ (25 mm)
Flow Direction Horizontal

Inverted Bucket Steam Trap – EM Series

Armstrong’s type EM forged steel inverted bucket steam trap combines the most reliable steam trap operating principle known in a body, which can be opened for easy maintenance.

The EM Series offers high resistance to wear, corrosion and water hammer.

The free-floating guided lever valve mechanism is “frictionless” with all wear points heavily reinforced. All working parts are stainless steel; valve and seat are hardened chrome steel, individually ground and lapped.

Freedom from dirt problems. Condensate flow under bottom edge of bucket keeps sediment and “sludge” in suspension until is charged by full differential purging action. Valve orifice opens wide – closes tight. There is no buildup of dirt, no close clearances to be affected by scale. Under normal conditions of reasonably “clean steam”, a strainer is not necessary. However, this is left to the user’s discretion.

Air handling ability. Vent in bucket top provides continuous automatic air and CO2 venting with no cooling leg and prevents air binding. Wiggle wire ensures clean vent hole at all times. Any steam passing through vent is condensed and discharged as liquid.

No steam loss. Steam does not reach the water sealed valve.

Inverted bucket traps require no adjustment and no live steam to operate.


Data Sheets
Installation and Maintenance


  • PED