Emerson Spence B Series User manual

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Spence B Series
▲ WARNING
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
fire and/or chemical contamination
causing property damage and personal
injury or death.
B Series steam trap must be installed,
operated and maintained in accordance
with federal, state and local codes, rules
and regulations, and Emerson Process
Management Regulator Technologies,
Inc. (Emerson) instructions.
If leak develops in the system, service
to the unit may be required. Failure
to correct trouble could result in a
hazardous condition.
Installation, operation and maintenance
procedures performed by unqualified
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Only a
qualified person shall install or service
the B Series steam trap.
Introduction
Scope of the Manual
This manual provides instructions for installation,
maintenance and parts information for the B Series
Thermostatic Bellows Steam Traps.
Figure 1. B Series Thermostatic Bellow Steam Trap (Cutaway)
November 2021
Instruction Manual
VCIMD-14991
Product Description
The B Series Thermostatic Bellows Steam Traps
have a balanced pressure design with stainless steel
welded actuator capable of discharging condensate
within 10°F / 12°C of saturated temperature.
Thermostatic actuator employs a conical valve lapped
in matched sets with the seat ring assuring tight
shut off.
B Series

Specifications
The specifications section on this page provide the ratings and other specifications for the B Series.
1. Add (-HC) at the end of type number for high capacity.
2. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
Available Configurations
Type B33: 1/2 NPT / 12.7 mm
straight through trap
Type B43: 3/4 NPT / 19.1 mm
straight through trap
Type B53: 1 NPT / 25.4 mm
straight through trap
Type B63: 1-1/4 NPT / 31.8 mm
straight through trap
Type B73(1):1-1/2 NPT / 38.1 mm
straight through trap
Type B83(1):2 NPT / 50.8 mm
straight through trap
Maximum Allowable Pressure(2)
250 psig / 17.2 barg
Maximum Operating Pressure(2)
250 psig / 17.2 barg
Maximum Differential Pressure(1)
250 psig / 17.2 barg
Maximum Operating Temperature(2)
450°F / 232°C
Materials of Construction
Body and Cover: Cast Iron ASTM A278 Class 30
Actuator: Welded Stainless steel
Cover and Gasket: Graphite
Valve and Seat: Hardened 416 Stainless steel
Options
SLR Orifice
HC - High Capacity Orifice
Additionally, physical damage to the
steam trap may result in personal injury
or property damage due to escaping of
accumulated gas. To avoid such injury
and damage, install the steam trap in a
safe location.
All pressure equipment should be
installed in a non-seismic area;
should not be exposed to fire; and
should be protected from thunderbolt
(lightning) strikes.
1. Before installing trap, blow steam through
equipment and piping to remove scale, pipe
threading chips and other dirt.
Note
Emerson Thermostatic Bellows Traps do
not require change of body or cover for
different pressures.
2. Check arrows on trap body or cover to ensure
that flow direction is correct. See Figure 2 for
recommended installation.
Principle of Operation
Thermal actuator is filled at its free length with a liquid
having a lower boiling point than water. On start-up,
valve is normally open. When steam enters trap,
thermal actuator fill vaporizes to a pressure higher
than line pressure. This forces valve into seat orifice
to prevent any further flow. As condensate collects,
it takes heat from thermal actuator, lowering internal
pressure. Line pressure will then compress thermal
actuator to open valve and discharge condensate.
Valve opening automatically adjusts to load conditions
from minimum on very light loads to full lift at
maximum load.
Installation
▲ WARNING
Personal injury or system damage may
result if this steam trap is installed,
without appropriate overpressure
protection, where service conditions
could exceed the limits given in the
Specifications section and/or steam
trap nameplate.
2
B Series

Figure 2. Recommended Piping Layouts
Installation Recommendations
1. Use a separate trap for each unit, coil, surface,
chest, etc.
2. Include unions in inlet and outlet piping if trap will
be removed from installed location for cleaning
and maintenance.
3. For piping conditions in step 12, for siphon-drained
equipment and for tilting jacketed kettle, specify
traps with “steam lock release valves” (SLR).
4. Provide condensate-collecting pockets for
traps draining steam mains, headers, risers
and branches.
5. Ensure that return main is large enough to handle
the condensate from all traps discharging into it,
without causing excessive back pressure.
6. Always discharge high and low pressure traps into
separate return mains.
Note
Do not insulate the trap or the piping and
fittings between equipment outlet and
trap inlet unless absolutely essential.
Do not use piping, nipples and fittings
smaller than trap connection size.
7. If possible, do not install trap with a long horizontal
run of piping between equipment outlet and trap
inlet. If such a hook-up is necessary, specify traps
with “steam lock release valves” (SLR).
8. Do not include a by-pass around trap unless
equipment drained must be kept in operation while
trap is being cleaned or serviced.
9. Do not jeopardize the advantage of a freeze-
proof trap by lifting the condensate or by the use
of horizontal piping from the trap outlet without
considerable pitch in the direction of flow or by
piping the trap in any way which will prevent fast
gravity drainage when steam is turned off.
3
B Series

Maintenance
▲ WARNING
To avoid personal injury, property
damage or equipment damage caused
by sudden release of pressure or
explosion of accumulated gas, do
not attempt any maintenance or
disassembly without first isolating the
steam trap from system pressure and
relieving all internal pressure from the
steam trap.
Steam traps that have been
disassembled for repair must be
tested for proper operation before
being returned to service. Only parts
manufactured by Emerson should be
used for repairing this steam trap.
Due to normal wear or damage that may
occur from external sources, this steam
trap should be inspected and maintained
periodically. The frequency of inspection
and replacement of parts depends upon
the severity of service conditions or the
requirement of local, state and federal
rules and regulations.
Do not remove cover while the trap is
very hot. Wait until steam pressure has
dropped and trap can be comfortably
touched with bare hand.
△ CAUTION
Never open a steam shut off valve
rapidly. Condensate always collects
at the upstream side of a closed,
untrapped steam valve. Waterhammer,
destructive to equipment, piping and
traps, can be initiated by quick opening
of such valves.
Testing
1. Periodically test the operation of all traps, which
are piped so the discharge will not be observed.
Use a three-way test valve for visual discharge.
A stethoscope or ultrasonic device can be utilized
for testing intermittent discharge types of traps.
If test valves have not been installed, check
temperatures of inlet and outlet piping close to
the trap. Use a surface pyrometer or an infrared
temperature device to detect temperature. Check
for the following conditions:
a. If inlet piping is hotter than outlet piping,
with temperature of latter rising and falling
in sequence with trap discharge, trap
is satisfactory.
b. If inlet piping is considerably cooler than
known temperature of the steam supplied
to equipment drained, trap is either not
discharging or is too small for the application.
2. The recommended frequency of trap testing
depends on the importance of each application
and the operating conditions.
1. Adopt a reasonable "Preventive Maintenance"
program to schedule all traps for internal
inspection and cleaning.
2. Do not drop traps or spare bellows.
3. Do not use a Stillson or Monkey wrench to remove
or replace bellows or tighten them excessively in
trap cover.
4. Do not store, pile or carry bellows with tools and
pipe fittings.
5. Most trap operating difficulties and failures are
caused by circumstances which the trap cannot
control. Some examples are pipe scale, dirt,
water-hammer, corrosive condensate, improper
installation and inaccessible location. Try to avoid
or correct these detrimental conditions.
6. Ensure to regularly blow down and clean strainers
and dirt pockets.
4
B Series

WHEN THIS
HAPPENS HERE IS WHERE THE TROUBLE MAY BE AND HERE IS WHAT TO DO
Trap not discharging -
cool to touch
1. Condensate not reaching the trap:
a. Pipe and fittings between equipment and trap plugged by dirt.
b. Strainer clogged by dirt.
a. Remove the obstruction.
b. Blow out or clean strainer.
2. Condensate not passing through trap.
a. Trap discharge orifice blocked by dirt.
b. Pipe and/or fittings between trap and return man plugged by dirt.
a. Clan trap and install strainer.
b. Remove obstruction.
3. Valve, upstream or downstream, not open or failed in
closed position. Open or repair valve.
4. Bellows has developed a leak or crack. Replace the bellows. Check for corrosive condition and, if
present, substitute bellows material.
Trap discharging
condensate
continuously -
warm to touch
1. Trap, strainer or piping partially obstructed by dirt. Remove the obstruction, blow down strainer and clean trap.
2. Valve, upstream or downstream, not open wide. Open valve wide.
3. Trap too small for condensate load. Add another trap in parallel or replace with larger trap
4. Condensate load has increased since trap was installed.
a. Boiler priming or foaming.
b. Leak in submerged coil of equipment.
c. Other traps have failed transferring condensate to
overloaded trap.
a. Correct the boiler condition.
b. Repair leak or replace coil/tube.
c. Locate and repair/replace faulty traps.
Trap discharging
live steam
1. Trap valve not closing tight
a. Scale or dirt between valve and seat.
b. Valve or seat or both, eroded and worn.
a . Clean trap and install strainer.
b . Replace valve and seat with a matched set.
2. Trap has been dropped - bellows misaligned so valve
cannot seat. Replace bellows and inspect trap for other damage.
3. Mistaking open or leaking by-pass valve for trap leak. Remove the by-pass if permissable, otherwise close or
repair valve.
4. Bellows damaged by waterhammer. Replace bellows, eliminate cause of waterhammer.
Slow warm-up or
temperature of
equipment drained
too low.
1. Steam pressure too low for temperature required by process.
a. Pressure throttled by thermostatically controlled steam
supply valve.
b. Increased demand for steam throughout the plant.
c. Steam piping too small for adequate supply.
a. Check for lowest throttled pressure and increase if feasible.
b. Increase boiler capacity if possible. Shut down
unneeded equipment.
c. Increase steam pressure or replace piping with larger size.
2. Pressure differential across trap too low.
a. Steam pressure less than when trap was installed.
b. Return line pressure higher than when the trap was installed.
a. Raise pressure to former level.
b. Return main too small. Other traps discharging live steam into
return main. Repair or replace faulty traps. Obstruction in return
main or discharge piping.
3. Short circuiting caused by group trapping. See Installation Step 5.
4. Trap steam-locked.
a. Long horizontal piping between equipment and trap.
b. Trap above drain outlet of equipment - no water seal at bottom
of riser.
c. Siphon-drained equipment - rotary dryers and tilting
jacketed kettles.
a. See Installation Step 2.
b. See Installation Step 13.
5. Apparatus drained by siphon pipe. Examine siphon for break or leak.
Table 1. Troubleshooting
5
B Series

Repair
1. Wait until trap is cool to the touch.
2. Remove cover - remove and discard old gasket.
3. Remove valve seat from body.
4. Examine bellows by:
a. Comparison to new bellows.
b. Immersing in cold and hot water to test
bellows travel.
5. If bellows are not damaged, reassemble into
cover; if damaged, replace. Leave threads of
bellows dry, tighten into trap cover and be sure to
not over torque.
6. Examine valve and valve seat
a. Clean with 80 to 150 grit emory. If no wear is
present, the valve and seat can be reused; if
damaged, replace. Use small amount of anti-
seize compound on seat and valve threads.
Valve and seat should be torqued for snug fit.
7. Insert new gasket.
8. Reassemble cover using small amount of anti-
seize compound on cover threads if trap has
screwed cover. If cover is bolted, use anti-seize
compound on the bolts.
9. Seating of cover gasket may be checked by
installing a pipe plug in outlet of trap and applying
80 psig / 5.52 barg air to inlet. Use soapy water
or leak detection fluid. A slight seepage should
be acceptable since air can pass through a small
opening that steam will not.
10. If possible, test trap before returning it to service.
Any pressure within trap range can be used; a
simple drip leg will suffice. Valve in trap should
close on steam. Leave trap on line long enough for
trap to cycle once.
Parts Ordering
When corresponding with your local Sales Office about
B Series, always reference the assembly number.
Parts List
Key Description Part Number
Spare Parts Kit See Table 2
1 Hex Bolts, Steel
1 and 1-1/4 NPT WAL0046426
3/4 NPT WAL0046425
1/2 NPT WAL0046424
2 Cover Flange, Cast Iron
3/4 NPT WAL421146
1/2 NPT WAL421145
1-1/2 and 2 NPT WAL421148
1 and 1-1/4 NPT WAL421147
3 Gasket, Graphite
1/2 NPT WAL621161
3/4 NPT WAL621162
1 and 1-1/4 NPT WAL621163
1-1/2 and 2 NPT WAL621164
4 Bellows, Stainless Steel
1/2 NPT WAL0015493
3/4, 1, 1-1/4, 1-1/2 and 2 NPT WAL0015498
5 Seat, Stainless Steel
1-1/2 and 2 NPT WAL421193
1 and 1-1/4 NPT WAL421191
1/2 NPT WAL421187
3/4 NPT WAL421189
6 Seat Gasket
1/2 NPT WAL0055100
1-1/2 and 2 NPT WAL0055104
1 and 1-1/4 NPT WAL0055102
3/4 NPT WAL0055101
7 Body, Cast Iron
1-1/2 NPT WAL421127
1-1/2 NPT HC WAL421221
2 NPT WAL421128
2 NPT HC WAL21222
1/2 NPT WAL421123
1-1/4 NPT WAL421126
1 NPT WAL421125
3/4 NPT WAL421124
6
B Series

Table 2. B Series Spare Parts Kit
MODEL SIZE, NPT HIGH CAPACITY STEAM TRAPS
THERMOSTATIC KITS(1)(2) PART NUMBER
COVER GASKETS
PART NUMBER
B31 and B33 1/2 WAL5723400 WAL0621161
B41 and B43 3/4 WAL5724600 WAL0621162
B51, B61, B53 and B63 1 to 1-1/4 WAL5726600 WAL0621163
B71, B81, B73 and B83 1-1/2 to 2 WAL5718600 WAL0621164
1. Kits include valve, seat ring, bellows and required gaskets.
2. With steam lock release (SLR) option.
Figure 3. B Series Assembly Drawing
513XXXX-A
1
2
3
4
5
6
7
7
B Series

0011534-B
Emerson Automation Solutions
Americas
McKinney, Texas 75070 USA
T [phone]
[phone]
Europe
Bologna 40013, Italy
T [phone]
Asia Pacic
Singapore 128461, Singapore
T [phone]
Middle East and Africa
Dubai, United Arab Emirates
T [phone]
SpenceValve.com
VCIMD-14991 © 2021 Emerson Electric Co. All rights reserved. 11/21
Spence is a mark owned by one of the companies in the Emerson Automation
Solutions business unit of Emerson Electric Co. The Emerson logo is a
trademark and service mark of Emerson Electric Co. All other marks are
property of their prospective owners.
The contents of this publication are presented for informational purposes only,
and while every e󰀨ort has been made to ensure their accuracy, they are not to
be construed as warranties or guarantees, express or implied, regarding the
products or services described herein or their use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We
reserve the right to modify or improve the designs or specications of such
products at any time without notice.
Emerson Electric Co. does not assume responsibility for the selection, use
or maintenance of any product. Responsibility for proper selection, use
and maintenance of any Emerson Electric Co. product remains solely with
the purchaser.
B Series