Armstrong 800, 811, 812, 813 User Manual

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)

C
A

Steam Trapping and

Steam Tracing Equipment

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 CO2 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)

B

D

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 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

in mm in mm in mm in mm

Pipe Connections

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.

Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit www.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

211/811/881/21-DC/81-DC/TVS-81DC

212/812/882/22;82TVS-82

Series 213/813/883/23;83;TVS-83DC

800-813 Series Inverted Bucket Steam Trap

Next

Cast Iron for Horizontal Installation

For Pressures to 250 psig (17 bar)...Capacities to 4,400 lb/hr (2,000 kg/hr)

Model 800 Capacity

Model 811 Capacity

Steam Trapping and

Steam Tracing Equipment

Model 812 Capacity

Model 813 Capacity

Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit www.armstronginternational.com for up-to-date information.

North America • Latin America • India • Europe / Middle East / Africa • China • Pacific Rim

armstronginternational.com

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