60Y
60R
YARWAY IMPULSE STEAM TRAPS, SERIES 60Y AND 60R
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
© 2020 Emerson. All Rights Reserved.
A steam trap for steam-using equipment, enabling equipment efficiency to be optimized while conserving energy
through rapid drain discharge
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Working pressures and back pressures
Trap Series 60Y and 60R are designed to
operate at maximum working pressure of
4 MPa, but they have been set to function
at maximum efficiency at pressures from
0.14 MPa to 3 MPa. When they operate in the
specified pressure range, the best results
will be obtained after carrying out the special
adjustments listed as follows:
1. When operating at pressures up to
0.14 MPa, loosen lock nut and turn control
cylinder stem 1½ to downwards.
2. When operating in the pressure range
3 MPa ~ 4 MPa, loosen lock nut and turn
control cylinder stem ¾ to upwards.
3. The traps have been preset to operate
back pressures of up to 40% of trap inlet
pressure. By turning the control cylinder
stem 1½ to downwards, they can operate
against back pressures up to 72%.
VCIOM-15468-EN 20/06
CAUTION
When following the above procedure, be sure
to make the adjustments after loosening the
lock nut. Use a screw driver to hold the control
cylinder stem in place. When tightening the lock
nut after completing the ad-justments, verify that
the stem is set firmly in position, since it may turn
together with the lock nut. Except when making
the above adjustments, be sure not to touch the
stem and lock nut.
Operating characteristics
Trap Series 60Y and 60R are extremely sensitive
to the generation of condensate, discharging
high-temperature condensate a little at a time.
When a big volume of condensate accumulates,
as for instance during starting, the trap
discharges continuously. With little volume, it
discharges intermittently.
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YARWAY IMPULSE STEAM TRAPS, SERIES 60Y AND 60R
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
RATINGS TABLE
Series
Max. working pressure
(MPa)
Max. working temperature
(°C) DN Strainer
60Y 4 400
15 Built-in
20 Built-in
25 Built-in
60R 4 400
32 -
40 -
50 -
SECTION 1 - INSTALLATION
1. Before installing trap, blow out piping
thoroughly to remove dirt, scale and metal
chips. Particularly with new piping systems,
be sure to blow out thoroughly.
2. Install trap in lowest position possible so
that condensate can flow to trap.
3. When trap is installed above the equipment
to be drained, provide a U-tube or lift
fitting at the bottom of riser in front of trap.
(This is done to attain a water seal effect.)
4. The trap can also operate when installed in
a vertical line discharging downwards, but
disassembly and inspection are easier to
carry out when installed horizontally with
bonnet on top. Verify that arrow on top of
body agrees with direction of flow.
5. Where freezing can occur, pitch line
downwards to assure no condensate
remains inside trap.
SECTION 2 - PIPING ARRANGEMENT
1. Follow the typical piping arrangement
shown in Figure 1.
2. Piping should be equal to or one size larger
than trap size.
3.
Discharge piping should be at least equal
to trap size. Longer lines should be amply
sized to handle condensate and flash steam
simultaneously. If several traps discharge to
a common return line, amply sized lines must
be used to prevent excessive back pressures.
4.
If discharge is to a closed return system,
install tee and test valve to enable inspection
of trap operation (Figures 1a and 1b).
5. If discharge of condensate is to discharge
piping above steam trap, install a check
valve to prevent backflow upon shutdown.
FIGURE 1
Trap strainer and fitting assembly detail
a. Discharge to return line below trap
(Trap series 60Y)
b. Discharge to overhead line
(Trap series 60R)
c. Discharge to Atmosphere
(Trap series 60Y)
Legend
Steam trap 60Y with blow down valve
Steam trap 60R
Strainer with blow down valve
Tee with test valve
Gate or globe valve
Swing check valve
Union
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YARWAY IMPULSE STEAM TRAPS, SERIES 60Y AND 60R
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
SECTION 3 - INSPECTION AND MAINTENANCE
1. To prolong trap life and assure proper
operation, it is recommended to clean
strainer screens. When fitted with a blow
down valve, screens can be cleaned simply
by opening this valve.
2. Check for proper trap operation by one of
the following methods:
a.
Hold a screw driver or metal rod against
the bonnet and listen to the characteristic
clicking sound as the valves opens and
closes.
b. Use test valve at rear of trap to observe
operating conditions.
3. When trap is cold - If trap does not open, first
check and clean the strainer. Since the trap
interior may also be clogged by scale or dirt,
disassemble and clean.
4.
When trap is hot - If the trap remains open,
discharging condensate continuously, it may
be undersized in relation to the load. Check
that the trap size and safety factor conform
to the operating conditions. If the trap fails to
shut off, scale or dirt may be trapped in the
working parts. Traps can be cleaned under
full steam pressure by removing the cap nut
and turning the control cylinder stem up and
down several times with a screw driver. If this
does not eliminate the trouble, disassemble
the trap and clean as described below.
Excessive back pressures may cause
trap malfunctions. In that event, see
Section 3 under “Working Pressures and
Back Pressures.” High back pressures may
be caused by overloaded backflows, open or
leaking by-passes or malfunctioning traps.
Check for cause and correct.
SECTION 4 -
DISASSEMBLY AND REASSEMBLY
Disassembly
1. Remove cap nut (7). Loosen control cylinder
(5) by screwing the lock nut upwards several
turns using a wrench and screw driver.
Mark the initial setting positions to serve as
a guide during reassembly. (Repair parts,
which are sold separately, are factory-set
and provided with a lock pin, so that guide
marks are unnecessary.)
2. Remove the bonnet assembly.
3. Remove lock nut and screw control cylinder
down until it extends approximately 1.75 cm
beyond lower edge of bonnet.
4.
The outer diameter of the valve disc is larger
than the bore of the control cylinder’s open
end. To remove valve, cock it at an angle
inside the cylinder and gently roll or pull it
out. If the valve does not come out easily,
avoid damaging valve or control cylinder by
removing valve as follows: Push valve all the
way into cylinder, place pliers around control
cylinder near open end, squeeze very lightly,
cock valve piece and tilt valve out of the
cylinder. Replace valve in the reverse manner.
5. Clean valve and interior of control
cylinder by wiping with a rag, or by using
a non-corrosive solvent. Use a paper clip
to clean oxide deposits from orifice in top
of valve. Under no circumstances should
crocus cloth or tools be used to clean the
surfaces of trap parts.
Reassembly
If trap parts are not damaged, reassemble
as follows: (When installing a new Repair Kit,
following accompanying instructions.)
1. Be sure all parts are clean and no dirt
enters trap during assembly.
2. Insert valve piece in control cylinder (see
“Disassembly, Section 4) and screw cylinder
up in bonnet until head of stem appears
above top of bonnet.
3. Replace lock nut (beveled corners up), line
up guide marks on nut and stem and tighten
lightly. (When installing a new Repair Kit,
line up holes in lock nut and stem, insert
lock pin and tighten lightly.)
4. Clean mating surfaces of bonnet and body.
Screw bonnet assembly into trap.
CAUTION
Be sure valve enters opening in valve seat.
5. Clean surfaces of bonnet and cap nut, install
cap nut and gasket, screw on cap nut and
tighten firmly.
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YARWAY IMPULSE STEAM TRAPS, SERIES 60Y AND 60R
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
PARTS LIST
Nr Item
1. Body
2. Valve seat
3. Seat gasket
4. Valve piece
5. Control cylinder
6. Bonnet
7. Cap nut
8. Lock nut
9. Cap gasket
10. Screen
11. Screen cap
12. Gasket
13. Plug
PARTS LIST
Nr Item
1. Body
2. Valve seat
3. Seat gasket
4. Valve piece
5. Control cylinder
6. Bonnet
7. Cap nut
8. Lock nut
9. Cap gasket
FIGURE 2 - SERIES 60Y
FIGURE 3 - SERIES 60Y
Flow
Flow
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YARWAY IMPULSE STEAM TRAPS, SERIES 60Y AND 60R
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
SIZE TABLE
Parts name Figure No. DN HEX (mm) Torque (N·m)
Bonnet 60Y 15 26 157
20 32 167
25 38 177
Bonnet 60R 32 46 196
40 50 216
50 54 235
Seat 60Y 15 14 24
20 16 35
25 19 42
Sea 60R 32 23 60
40 26 79
50 29 102
Cap 60Y 15, 20, 25 23 49
Cap 60R 32, 40, 50 23 49
Screen 60Y 15 32 177
Cap 20 38 186
25 46 196
SECTION 5 - REPAIR PARTS
The Repair Kits of Trap Series 60Y and 60R are
Supplied as a set consisting of six items: valve
piece, lock nut, control cylinder, valve seat with
gasket, lock pin and cap gasket (see Figure 4).
The parts are factory assembled and set, ready
for use. They are sold as complete assemblies,
and individual parts are not necessarily
interchangeable.
SECTION 6 - SPARE PARTS
For one year service, it is recommended to
keep in stock one spare Repair Kit for every
four steam traps installed of same size and
series No. (Minimum number of kits: 1).
When ordering, specify quantity, size and trap
series No.
Special tools
T-Handle Socket Wrench for removal and
installation of threaded seat.
FIGURE 4 - REPAIR PARTS
Control cylinder Valve piece
Cap gasket Lock pin Lock nut Seat gasket Valve seat
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VCIOM-15468 © 2020 Emerson Electric Co. All rights reserved 06/20. Yarway 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 the property of their prospective owners.
The contents of this publication are presented for informational purposes only, and while every effort 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 specifications 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.
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