Yarway F881, F883 and F884 Float and Thermostatic Steam Traps Owner's manual

Brand: Yarway

Model: F881, F883 and F884 Float and Thermostatic Steam Traps

Type: Owner's manual

Yarway F881, F883 and F884 Float and Thermostatic Steam Traps are designed to remove condensate from steam systems. They are suitable for a wide range of applications, including:

Power plants
Refineries
Chemical plants
Food and beverage processing plants
Textile mills
Paper mills

These steam traps are designed to operate at pressures up to 1090 psig and temperatures up to 388°F. They have a nominal flow rate of 3524 lb/h at 100 psi.

Yarway F881, F883 and F884 Float and Thermostatic Steam Traps are easy to install and maintain. They can be installed in any position, and they do not require any special tools or equipment.

Yarway F881, F883 and F884 Float and Thermostatic Steam Traps are designed to remove condensate from steam systems. They are suitable for a wide range of applications, including:

Power plants
Refineries
Chemical plants
Food and beverage processing plants
Textile mills
Paper mills

These steam traps are designed to operate at pressures up to 1090 psig and temperatures up to 388°F. They have a nominal flow rate of 3524 lb/h at 100 psi.

Yarway F881, F883 and F884 Float and Thermostatic Steam Traps are easy to install and maintain. They can be installed in any position, and they do not require any special tools or equipment.

Before installation, these instructions must be carefully read and understood.

YARWAY F881, F883 AND F884 FLOAT AND THERMOSTATIC STEAM TRAPS

SUMMARY OF INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

INSTALLATION POSITION

CORRECT INSTALLATION WRONG INSTALLATION

INSTALLATION PROCEDURE

• Check that the product is suitable for the

intended application (i.e. materials and

pressure/temperature ratings).

• Remove plastic covers from end connections.

Be sure that the equipment is installed

according to the arrow for Inlet/Outlet

designations.

• Ensure that the jointing material does not

block or enter the trap.

• If Teflon tape is used (for threaded

connections), avoid rolling it till the edge.

• Install the steam trap at a point where

condensate tends to accumulate.

• A Strainer should be installed upstream of

the trap. The strainer must be installed with

the sieve sideways.

• Take the necessary precautions to prevent

damage to this product due to thermal

expansion and other external sources of

stress.

• The steam trap pipework should be properly

supported and free from strain and it should

not be subjected to undue surges of pressure.

MAINTENANCE

• The steam trap must be checked at least

once a year (i.e. validate its operation and

clean the internals).

• When reassembling, make sure all gasket

faces are clean. Always use a new gasket.

Tighten cover bolts uniformly in a diagonal

sequence.

• Maintenance should proceed as follows:

1. Isolation valves should be closed.

Pressure and temperature should be

atmospheric.

2. Remove the type of connections used.

3. Execute the maintenance work.

4. Replace and tighten the connections (don’t

forget to replace the gasket).

5. Consider the start-up conditions.

YARWAY F881, F883 AND F884 FLOAT AND THERMOSTATIC STEAM TRAPS

SUMMARY OF INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS

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 Automation 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

For additional information, please visit: https://www.emerson.com/en-us/catalog/yarway-p001409

RATINGS AND SPECIFICATIONS

Specification Series

Specification

Series

F881 F883 F884

Operating Principle Mechanical

Type Float and Thermostatic

Size ½" - 1" 1"-HC 1½" - 2" 2"-HC ½" - 1" 1"-HC 1½" - 2" 2"-HC ½" - ¾" 1" 1"-HC 1½" - 2"

Maximum Operating Pressure (psig) 203 464 203

Maximum Operating Temperature(°F) 388 482 388

Nominal Flow (lb/h at 100 psi; near

saturation, unless otherwise noted)

1090 3524 11894 30286 1090 3524 11894 30286 726 1090 3524 11894

Maximum Back Pressure (% of inlet;

based on absolute pressure)

Minimum Differential Pressure (psi) 1.5

TROUBLESHOOTING CHART

Issue Possible Reason Solution

Continuous steam discharge.

Damaged seat.

Incorrect installation.

Substitute seat.

Check the installation position.

Inadequate condensate discharge.

Obstructed strainer.

Inadequate pressure differential.

Excessive back pressure.

Damaged float.

Clean accordingly and identify the

possible reason for contamination.

Check the steam trap differential

pressure and substitute.

A larger steam trap end

connection may be required.

Replace.

Temporary condensate

accumulation.

Steam blocking.

Downsizing.

Use a steam trap with SLR.

Check maximum flow rate (during

startup).

Slow intial startup.

Damaged air eliminator.

The air flow is too high for thetrap.

Downsizing.

Replace.

Install an additional aireliminator.

Check maximum flow rate (during

startup).

Yarway F881, F883 and F884 Float and Thermostatic Steam Traps Owner's manual

Brand: Yarway

Model: F881, F883 and F884 Float and Thermostatic Steam Traps

Type: Owner's manual

Yarway F881, F883 and F884 Float and Thermostatic Steam Traps are designed to remove condensate from steam systems. They are suitable for a wide range of applications, including:

Power plants
Refineries
Chemical plants
Food and beverage processing plants
Textile mills
Paper mills

These steam traps are designed to operate at pressures up to 1090 psig and temperatures up to 388°F. They have a nominal flow rate of 3524 lb/h at 100 psi.

Yarway F881, F883 and F884 Float and Thermostatic Steam Traps are easy to install and maintain. They can be installed in any position, and they do not require any special tools or equipment.

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Yarway F881, F883 and F884 Float and Thermostatic Steam Traps Owner's manual

Yarway F881, F883 and F884 Float and Thermostatic Steam Traps Owner's manual

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