Series 1010, 1810 2010 Steam Traps

Series 1010, 1810 2010 Steam Traps
Installation and Maintenance
Series 1000, 1800 and 2000 Inverted Bucket Steam Traps
This bulletin should be used by experienced personnel as a guide to the installation of the
Armstrong Series 1000, 1800, and 2000 Inverted Bucket Steam Traps. Selection or installation
of equipment should always be accompanied by competent technical assistance. You are
encouraged to contact Armstrong International, Inc. or its local sales representative for
additional information.
Steam trap installation is critical from both a performance and maintenance aspect. Installation of
the trap is simplified if you follow these guidelines:
1. Before installing the trap, clean out the line by blowing down at full steam pressure. Blowdown
any strainers ahead of the trap.
2. Install the trap so that it is ACCESSIBLE for inspection and repair, BELOW the drip point
whenever possible, and CLOSE to the vertical drip leg.
3. Install strainers ahead of traps if specified or when dirt conditions warrant their use.
4. Use pipe dope or Teflon™ tape sparingly on male threads only. Leave the end thread exposed
to avoid introducing the sealant into the system.
5. For proper operation, the trap body must be upright in a “vertical to the eye” position. See
Figures 1-1, 1-2, and 1-3 for proper trap orientation and wrenching surfaces. NOTE: Use of
wrenching surfaces other than specified on the Series 2000 connector can result in
damage to the gasket seating area.
Note: Use crosshatched area only for wrenching surface.
Figure 1-1: Series 1000
Figure 1-2: Series 1800
Figure 1-3: Series 2000
Series 1000, 1800 and 2000 Inverted Bucket Steam Traps
6. Observe pressure limitations stated on the trap
label. For maximum operating pressures see
Table 2-1. Traps with thermic buckets are
limited to a maximum operating pressure of 250
psig, unless otherwise limited by specific model
Table 2-1. Maximum Operating Pressure
1010 and U-1010
150 psi
1810 and 2010
200 psi
1011, U-1011, 1811 and 2011
400 psi
1022, U-1022 and 1013
450 psi
1822, 2022
650 psi
7. Do not exceed the maximum differential pressure
(difference between inlet and outlet pressure)
marked on the trap label and stamped on the trap. Exceeding the maximum differential
pressure will cause the trap to lock shut. Higher pressure traps, however, may be used at all
lower pressures provided they are of sufficient capacity.
8. Closed Return Systems: It is convenient for replacement and trap testing purposes to install an
isolation valve on each side of the trap with a test valve between the trap outlet and the
downstream isolation valve. Trap replacement is further simplified by installing a union on the
inlet and outlet sides of the trap. Where applicable, place unions at right angles, not in line, to
facilitate trap removal.
9. All inverted bucket type steam traps require that a water seal be established inside
the trap. When placing in operation, open the inlet valve slowly so that the trap can
catch its prime.
1. When the steam trap is suspected of malfunctioning, it can be checked by observing the
discharge of the trap. Inverted bucket traps discharge intermittently except under very low load
conditions. If the trap is locked shut, check the pressure differential to verify that the maximum
differential pressure (stamped on the trap) is not exceeded.
If the trap is blowing live steam, close the inlet valve for a few minutes, then gradually open so
that the trap can catch its prime. Do not confuse the discharge of flash steam with live steam
loss. If the trap continues to blow live steam, remove the trap from the line, back flush it with
compressed air or water, and check it again for normal operation.
2. If it can not be made to operate normally, verify that the trap is correct for the application
(capacity, differential pressure, etc.). If correct, install a new steam trap of the same series and
of equal capacity in its place. NOTE: When performing maintenance on any steam trap, the
common practice is to remove the trap in question and immediately install a good trap in its
place. Maintenance can then be performed with minimum equipment downtime.
For assistance with an unusual installation or service problems, contact your Armstrong Representative
or Armstrong International's application engineering department.
Armstrong Steam and Condensate Group
816 Maple Street, Three Rivers, Michigan 49093 - USA Ph: (269) 273-1415 Fax: (269) 278-6555
Printed in U.S.A.
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