Emerson YARWAY 516 Series Manual

Emerson.com/FinalControl

YARWAY SERIES 515/516* INTEGRAL STRAINER STEAM TRAPS

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

Before installation these instructions must be fully read and understood

SERIES NUMBERS

To determine the size, series number, and

pressure/temperature rating, refer to the

nameplate on the trap body.

Suffix Letter Identification

SW Socketweld ends

A, B Internal Part Size

R* Commercial (flanges per ANSI Standard)

E* Navy (flanges per MIL-T-960E)

RATINGS

Operating pressure ranges

SHELL PRESSURE/TEMPERATURE RATINGS

Back Pressure Limits

Piston valve traps rated to 1500 psig (100 bar)

(incl.) are factory set to operate from 150psig

(10 bar) to maximum rated pressure. Maximum

allowable back pressure at trap outlet equals

25% of pressure at trap inlet, based on absolute

pressures.

End Conn. Figure No. Internal Parts Piston End Conn. Rating

1/2", 3/4", 1" 515

516* A or B SW

1500 psig (100 bar) - 875F (468C)

1500 psig (100 bar) - 775F (413C)

Note: Series 515 socketweld end traps are chrome moly steel construction.

*Series 516 socketweld end traps are constructed from carbon steel.

SATURATION CURVE

ALL LIQUID

PHASE

ALL

SUPERHEAT

SERIES 515

SERIES 516

MAX. TEMPERATURE (C)

MAX. TEMPERATURE, BAR

MAX. TEMPERATURE, PSI

MAX. TEMPERATURE (F)

YARWAY SERIES 515/516* INTEGRAL STRAINER STEAM TRAPS

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

Equipment drain

Yarway Welbond shut off valve

Dirt leg

(optional)

Steam trap

Strainer blow-down (optional)

½ Yarway Welbond globe valve Test valve (optional)

Yarway Welbond globe valve

Elevated return

Check valve

Return main

FIGURE 1

INSTALLATION

Piping to and from the trap should be equal to

trap size or one size larger. Discharge line for

short runs equal to trap size; larger for long

runs. Avoid configurations that would cause

excessive back pressure.

Blow the System Out before installing the trap.

Frequent strainer blowdown or cleaning is

recommended on a new system. Conditions

will dictate frequency of blowdown in normal

operation.

Valves - Use globe type (Yarway Welbond®) for

isolation strainer blow down, or for test (see

Figure No. 1). Bypasses not recommended

except for critical installations. If discharge

is to a multistation or overhead return, put a

swing check valve in discharge line to prevent

backflooding on shutdown. Select a check valve

suitable for the application.

Locate Trap below outlet from equipment

(gravity flow). If trap must be above the drain

provide a "U" or lift fitting at the bottom of the

riser before the trap (water seal). The trap may

be installed in a horizontal or vertical line or at

any angle so long as the discharge is downward

or horizontal.

Welding - Socket or seal welding of this

trap body to the piping should be completed

according to applicable codes, standards, and

procedures.

DO NOT make electrical welding connections

to the trap body or any other part of the trap

to prevent internal arcing. Electrical ground

should be made to the pipe and not the trap.

Note: It is not necessary to disassemble the

trap prior to welding, but avoid subjecting the

internals to temperatures higher than 500F.

WARNING

Hot discharge from this product may cause severe

burns. Discharge must be piped away or directed

so that persons in the vicinity are not endangered.

This product must be isolated, vented and cool to

the touch before repairing or inspecting.

YARWAY SERIES 515/516* INTEGRAL STRAINER STEAM TRAPS

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

MAINTENANCE

1. For the best trap operation and maximum

service life, strainer screen should be

cleaned frequently. This can best be done by

using a blowdown valve connected to blow-

off connection.

2. Periodically remove the bonnet and clean

and inspect the screen. This should be done

at least once a year and more frequently

if the trap is not fitted with a strainer

blowdown valve.

3. When cleaning the strainer it is

recommended that the trap be inspected

and working parts cleaned if necessary. In

the event of condensate drainage problems,

check before opening the trap whether

the trouble is due to a clogged line, valve

broken or in wrong position, or dirty strainer

requiring blowdown.

DISASSEMBLY

1. Remove bonnet and unscrew seat.

2. Inspect and clean all parts. If satisfactory,

reassemble trap. It is recommended that

new gaskets be used.

*Consult factory for non-standard product,

flanges and Series 516.

If Internals Require Replacing

1. Remove cap nuts, cap and using wrench and

screw driver simultaneously, loosen control

cylinder.

2. Pull lock pin, remove lock nut and

unscrew control cylinder.

3. Install new internals, screen and gaskets.

Reassemble trap.

CHECKING

Check bonnet and cap nut torque after 48 hours

of operation. More frequent checks for proper

trap operation can be quickly made by one of

the following methods:

a. Observe the discharge from the trap

through the test connection—first closing

the downstream stop valve.

b. Hold screwdriver or metal rod against base

of cap. Listen for characteristic clicking

sound of valve as it opens and closes.

If trap is remaining open continuously or

not opening at all: —strainer screen may be

damaged or dirty. —parts may be worn from

service. —dirt and scale may be lodged in

internals. Disassemble and inspect the trap.

PARTS LIST

Item Description

1Body

2Bonnet

3Cap

4* Valve

5* Control cylinder

6* Seat

7* Lock nut

8* Lock pin

9* Seal gasket

10* Cap gasket

11* Bonnet gasket

12* Screen

13 Bonnet stud

14 Bonnet nut

15 Cap stud

16 Cap nut

* Renewal kit

FIGURE 2

Piston valve type

YARWAY SERIES 515/516* INTEGRAL STRAINER STEAM TRAPS

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

FIGURE 3

Trap disassembled exposing strainer and 'cage'

arrangement of all trap working parts mounted

in the bonnet.

FIGURE 4

Seat removed to show valve and control

cylinder.

SERVICING

After disassembly, clean internal parts with a

cloth and non-corrosive solvent. Heavy deposits

may be cleaned from orifice in top of piston

valve with a piece of fine wire or toothpick.

BE CAREFUL not to damage valve orifice,

disc edge, or control cylinder bore. Under no

circumstances should crocus cloth or tools be

used to clean any surfaces of trap parts.

Inspect control cylinder bore, valve and seat for

wear. Worn parts cause inefficient or improper

operation. They should be replaced with a

factory-set renewal kit.

CAUTION: The valve, seat and control cylinder

or the renewal kit are matched parts. They are

not individually interchangeable with similar

parts from other repair kits. Do not re-use

any of the old parts when installing a new

renewalkit.

Internal part size Renewal kit part no.

A963557-01

B963557-02

TABLE 1 - TORQUE VALUES ft-lbs (Nm)

Item ft-lbs (Nm)

Bonnet nuts 110-130 (149-176)

Cap nuts 14-18 (19-24)

Lock nut 7.9-8.3 (10.7-11.3)

SPARE PARTS

To cover a one year service period, it is

recommended that one (1) renewal kit for every

four (4) integral strainer traps installed of same

internals be stocked. (Minimum number of

kits1) and sufficient gaskets for trap inspection.

REASSEMBLY

Installing Repair Kit

1. Clean sealing surfaces and all internal

parts.

2. Clean studs, and lubricate studs and nut

faces with high temperature lubricant, such

as “Molykote”.

3. Remove lock pin and nut from control

cylinder stem.

4. Lubricate threads. Screw control cylinder

into bonnet.

5. Insert valve in seat, holding valve in position,

lubricate threads screw seat into bonnet—

be sure valve enters control cylinder

and that seat contacts the bottom of the

counterbore in the bonnet.

6. Replace lock nut (bevel up), and fully insert

lock pin.

7. Screw cylinder down; tighten lock nut per

Table 1.

8. Push screen into body recess and with new

bonnet and seat gaskets in place lower

bonnet over studs.

9. Run bonnet nuts on studs and tighten

alternately to the torque indicated in Table1.

10. Replace cap gasket, cap and nuts. Torque

per Table 1. Table 1—Torque Values ft-lbs

(Nm)

Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product.

Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Yarway is a mark owned by one of the companies in the Emerson Automated Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson

andthe Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective 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.com/FinalControl

YARWAY SERIES 515/516* INTEGRAL STRAINER STEAM TRAPS

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

NOTE

Any malfunction of this product must be reported to the service department. Repare made to the product by

unauthorized personnel will void the warranty.

Right to know laws and OSHA standard 29CFR (1910.1200)

Material Safety Data Sheets on the following Yarway products:

Valves, Steam Traps and Strainers

The OSHA Hazard Communication Standard 29CFR 1910.1200, states that the standard does not apply to

“articles.” The standard defines an article as:

“A manufactured item formed to a specific shape or design for a particular use which does not release or

otherwise expose an employee to a hazardous chemical under normal conditions of use.”

The above named products fall within the definition of an “article”, no Material Safety Data Sheets are available

or are required. Our product is manufactured as an “end product.”

If the product is a weld end the following applies.

WARNING

Materials used in manufacture of Yarway products are considered in a stable condition when shipped.

However, under certain conditions purchasers could create potential hazardous conditions by their

future operations.

CAUTION

Welding, cutting, burning, machining or grinding of this product can generate toxic dust and fumes of

potentially hazardous ingredients. The dust or fumes can cause irritation of the respiratory tract, nose,

throat, skin and eyes. It may cause temporary or permanent respiratory disease in a small percentage

of exposed individuals. Use moderate ventilation when grinding or welding. Avoid breathing dust, fumes

or mist. Avoid prolongued skin contact with dust or mist. Maintain dust levels below OSHA and ACGIH

levels. Use protective devices. Wash hands thoroughly after contact with dust before eating or smoking.

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