Yarway Impulse Steam Traps, Series 60Y and 60R Owner's manual

Brand: Yarway

Model: Impulse Steam Traps, Series 60Y and 60R

Type: Owner's manual

60Y

60R

YARWAY IMPULSE STEAM TRAPS, SERIES 60Y AND 60R

INSTALLATION, OPERATION AND MAINTENANCE MANUAL

A steam trap for steam-using equipment, enabling equipment efficiency to be optimized while conserving energy

through rapid drain discharge

Emerson.com/FinalControl

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.

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.

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.

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

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:

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.

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.

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.

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

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

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.

Emerson.com/FinalControl