Emerson 66R Instrukcja Obsługi Pobierz pdf (Strona 3)

Types 66R and 66RR

       

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   

 

 



         

 



1. Use qualied personnel when installing, operating, and

maintaining these relief valves. Before installing,

inspect the relief valve, and pilot if used, for any damage

or foreign material that may have collected.

2. Make certain the body interior is clean and that

pipelines are free of foreign material. Apply pipe

compound to only the male pipeline threads with an

NPT body, or use suitable line gaskets and acceptable

bolting practices with a anged body.

3. Install a Type 66R or 66RR relief valve in a horizontal

pipeline with the diaphragm casings above the body.

Other orientations will change the relief set pressure and

set pressure range due to the weight of the internal

parts. The ow through the relief valve must comply

with the ow arrow on the body.

4. An upstream control line is not required for a standard

Type 66R relief valve with internal registration through

a stem guide (key 41, Figure 6). However, for an

optional Type 66R relief valve with sealing diaphragm

(key 14, Figure 6), connect a control line to the 3/4-inch

NPT tapped connection boss on the diaphragm case

(key 3, Figure 6) as shown in Figure 3.

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5. For a Type 66RR relief valve used in a relief application,

connect an upstream control line to the 1/2 NPT

connection on the pilot diaphragm case (key 4, Figure 8).

For other typical applications, piping arrangements

are shown in Figures 4 and 5. Regardless of Type 66RR

installation, the pipe plug (key 78, not shown) will have

to be removed from the vent of the Type Y695RR pilot

spring case (key 3, Figure 8).

6. On backpressure or bypass applications, install a

three-valve isolating bypass, and vent valves

immediately upstream and downstream of the unit, if

system operation is necessary during maintenance.

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













7. The standard Type 66R spring case (key 2, Figure 6) has

a Type Y602-10 vent assembly (key 30, Figure 6) installed

in the 3/4 NPT spring case tapping. The vent may be

removed and obstruction-free piping or tubing installed for

remote piping of the spring case or for pressure loading of

the spring case as shown in Figure 5. If kept in the spring

case, the vent must be protected against clogging.

M1041 M1056

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Figure 2. Operational Schematics

TYPE 66R TYPE 66RR

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Types 66R and 66RR 1

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Emerson 66R Instrukcja Obsługi Strona 3

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