Emerson Yarway Installation, Operation And Maintenance Instructions

YarwaY INSTALLING AND SERVICING STRAINERS

InstallatIon, operatIon and maIntenance InstructIons

Before installation these instructions must be fully read and understood

INstallatION

1. Strainers should be installed ahead of

steam traps, control or pressure reducing

valves and other pipe line equipment to

protect against dirt, chips, scale or other

foreign matter.

2. Fit strainer with nippleand blow down valve

to facilitate frequent inspection and cleaning

of strainer.

3. Fig. 1A shows a Yarway Strainer installed

in a horizontal line ahead of a steam trap.

Fig. 2 A shows the strainer installed in a

vertical down-flow line. Be sure to install

the strainer with the arrow in direction of

flow.

4. Prevent freezing by installing strainer on

its side in horizontal lines or in vertical

downward flow piping. Both strainer and

blow down valve will drain completely and

therefore be freeze proof on shut down.

sErVICING

1. Regular inspection and blowing down of the

strainer (by removing cap plug or opening

blow down valve) will help to keep the

strainer free of debris.

2. To Clean. Valve off the strainer and remove

the screen cap. The screen and cap gasket

will come out with the cap.

Clean the screen with compressed air,

steam, or wash with a rust removing

solvent. Keep spare screens on hand to

reduce maintenance time.

3. To Reassemble. Clean the gasket surfaces

on the cap and body and install a new gasket

on the cap shoulder. Place the screen in the

cap recess and secure the cap assembly to

the strainer body.

4. Same maintenance procedure appliesto

bolted cover strainers.

Emerson.com/FinalControl

sparE parts

For one year service the following parts are

recommended for each strainer installed:

(2) Screen Cap Gaskets

(1) Screen

To order gaskets or screens: Specify (Qty.)

screen cap gasket for (Size), (Fig. No.) Yarway

Strainer. (Qty.), (Perforation or mesh size),

(Material) Screen for (Size), (Fig.No.) Yarway

Strainer.

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.

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FIG. 1A

FIG. 2A

FIG. 3A

VCIOM-09536-EN 18/09