User manual | EM Series Inverted Bucket Steam Traps

EM Series Inverted Bucket Steam Traps
Forged Carbon Steel for Horizontal Installation
Steam Trapping and
Steam Tracing Equipment
For Pressures to 454 psig (32 bar)...Capacities to 1,058 lb/hr (480 kg/hr)
Description
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.
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 discharged
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.
Maximum operating conditions
Maximum allowable pressure
(vessel design):
464 psi @ 482°F
(32 bar @ 250°C)
Maximum operating pressure:
464 psi (32 bar)
Maximum back pressure:
99% of inlet pressure
Connections
Screwed BSPT and NPT
Socketweld
Flanged DIN or ANSI (welded)
Materials
Body:
Forged carbon steel
Internals:
All stainless steel – 304
Valve and seat: Hardened chrome steel – 440F
Gasket:
Spiral wounded graphite
Bolts:24 CrMo5
Options
• Bucket vent scrubbing wire for heavy dirt/oil conditions
• For superheated steam we advise stellited valve and seat
How to order
Specify:
• Size and type of pipe connection
• Max. working pressure that will be encountered or orifice size
• Max. condensate load
• Any options required
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Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
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armstronginternational.com
EM Series Inverted Bucket Steam Traps
Forged Carbon Steel for Horizontal Installation
For Pressures to 454 psig (32 bar)...Capacities to 1,058 lb/hr (480 kg/hr)
Steam Trapping and
Steam Tracing Equipment
Model EM Capacity
CC
C
20
50
85
1
188
1
255
1
305
1
464
1
D
B
BB
Model EM Side Inlet, Side Outlet Trap (dimensions in mm)
in
mm
in
mm
in
mm
1/2
15
3/4
20
1
25
“C” Face-to-Face (screwed & SW)
3-5/8
92
3-5/8
92
—
–
“CC” Face-to-Face (flanged ANSI CL150)
6-3/4
171
7
178
7-1/4
184
Pipe Connections
“CC” Face-to-Face (flanged ANSI CL300)
7
178
7-3/8
187
7-3/4
197
“D” Bottom to C Inlet
7-7/16
189
7-7/16
189
7-7/16
189
“B” Height (screwed & SW)
8-1/4
210
8-1/4
210
—
–
“BB” Height (flanged*)
9-1/4
235
9-7/16
240
9-5/8
245
Weight, screwed, lb (kg)
6.8 (3.1)
6.8 (3.1)
—
Weight, flanged, lb (kg)
12 (5.5)
15.7 (7.1)
18 (8.1)
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
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North America • Latin America • India • Europe / Middle East / Africa • China • Pacific Rim
armstronginternational.com
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