Product Overview

Steam Trapping and Steam Tracing Equipment
76
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armstronginternational.com
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
C
A
B
D
Description
The most reliable steam trap known—the inverted bucket—provides efficient
condensate drainage of virtually all types of steam-using equipment. Put
the inverted bucket to work in a tough cast iron package, and you have the
best of both worlds. Because they operate efficiently for longer periods of
time, Armstrong cast iron inverted buckets add solid energy savings to lower
replacement/labor costs. All Armstrong cast iron inverted bucket steam traps
are repairable for even bigger maintenance savings.
A unique leverage system multiplies the force provided by the bucket to open
the valve against system pressure. The mechanism is free-floating, and has
no fixed pivots to create wear or friction.
Because the mechanism is located at the top of the trap, no dirt can collect
on the orifice. Small particles of dirt are held in suspension until discharged
by the full differential purging action when the bucket sinks, pulling the valve
off the seat.
The discharge orifice is surrounded by a water seal, preventing live steam
loss. Automatic air venting is provided by a small vent hole in the bucket, which
provides continuous automatic air and CO
2
venting at steam temperature.
Inverted bucket traps drain continuously, although discharging intermittently,
allowing no condensate backup. They are also resistant to water hammer.
Maximum Operating Conditions
Maximum allowable pressure
(vessel design): 250 psig @ 450°F (17 bar @ 232°C)
Maximum operating pressure: Model 800: 150 psig (10 bar)
Model 811-813: 250 psig (17 bar)
Connections
Screwed NPT and BSPT
Materials
Body: ASTM A48 Class 30
Internals: All stainless steel—304
Valve and seat: Hardened chrome steel—17-4PH
Test plug: Carbon steel
Options
• Stainless steel internal check valve
• Thermic vent bucket
• Stainless steel pop drain
• Probe connection
• Thermo drain
• Scrub wire
Specification
Inverted bucket steam trap, type ... in cast iron, with continuous air venting
at steam temperature, free-floating stainless steel mechanism, and discharge
orifice at the top of the trap.
How to Order
Specify:
• Model number
• Size and type of pipe connection
• Maximum working pressure that will be encountered or orifice size
• Any options required
Forafullydetailedcertifieddrawing,refertoCD#1000.
800-813 Series Inverted Bucket Steam Trap
Cast Iron for Horizontal Installation
For Pressures to 250 psig (17 bar)...Capacities to 4,400 lb/hr (2,000 kg/hr)
800-813 Series Side Inlet, Side Outlet Traps.
Add suffix “CV” to model number for internal check valve, “T” for thermic vent bucket.
Model No.
800*
811
812
813
Pipe Connections
in mm in mm in mm in mm
1/2, 3/4
15, 20
1/2, 3/4, 1
15, 20, 25
1/2, 3/4
15, 20
3/4, 1
20, 25
Test Plug 1/4 6 1/4 6 1/2 15 3/4 20
“A” (Flange Diameter) 3-3/4 95.2 3-3/4 95.2 5-5/8 143 7 178
“B” (Height)
5-7/16
138
6-7/8
175
9-1/16
230
11-3/4
298
“C” (Face-to-Face)
5
127
5
127
6-1/2
165
7-3/4
197
“D” (Bottom to C Inlet) 2-3/4 70 4-1/4 108 5-3/8 137 7-1/32 179
Number of Bolts 6
Weight lb (kg)
5 (2.3)
6 (2.7)
15 (6.8)
27-1/2 (12.5)
*Cannot be furnished with both thermic vent bucket and check valve.