Emerson 66R Bedienerhandbuch PDF herunterladen (Seite 6)

Types 66R and 66RR

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6. Install the diaphragm case gasket (key 35) and

diaphragm case (key 3) on either the body ange or

sealing diaphragm, making sure the gasket and case

holes are aligned with the body ange holes.

7. Secure the diaphragm case with the washers (key 34)

and cap screws (key 20), tightening the cap screws

with an even crisscross pattern. With a high-temperature

uorocarbon (FKM) diaphragm, use a new case

gasket (key 66, not shown), and install it on top of the

diaphragm case.

8. With a sealing diaphragm construction, place another

lower diaphragm plate on the sealing diaphragm so that

the cupped side of the plate faces up, followed by

another stem gasket (key 18) and the diaphragm spacer

(key 16) if used.

9. Place a stem gasket (key 18) on the stem or diaphragm

spacer, followed by the lower diaphragm plate (key 15),

diaphragm (key 5), upper diaphragm plate (key 4),

stiffener plate (key 39) if used, lower spring seat

(key 17), and spring seat washer (key 36) if used.

10. To keep the stem (key 13) from rotating, insert a

5/16-inch (7,9 mm) or smaller rod into the pipe plug

hole and through the hole in the stem, or reach far

enough under the diaphragm with an open-end wrench

to hold the stem. Install the other stem nut (key 23) on

the stem.

11. Remove the rod (if used) from the pipe plug hole, and

install the pipe plug (key 31, not shown) in the body.

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

12. Install the spring case (key 2) on the diaphragm, and

secure with the cap screws and nuts (keys 21 and 22),

nger-tightening only at this point.

13. Install the spring (key 6), upper spring seat (key 24),

adjusting screw (key 25), and new closing cap gasket

(key 26). With some constructions, the closing cap

(key 27) will have to be installed before the

adjusting screw.

14. Compress the spring slightly with the adjusting screw to

ensure proper slack in the diaphragm. Tighten the nuts

and cap screws alternately in equal increments to

avoid crushing the diaphragm.

15. Turn a Type 66RR adjusting screw into the spring case

to the position noted in “Disassembly” step 3. If this

position was not marked, turn the adjusting screw until

the valve begins to open when inlet pressure just

exceeds 2-inches w.c. (5 mbar).

16. Complete the relief valve adjustment according to the

“Startup” section.



Body Area

This procedure is for gaining access to the disk assembly,

orice, and body seal O-ring. All pressure must be released

from the regulator, before the following steps can be

performed. Key numbers are referenced in Figure 8.

1. To inspect and replace the disk assembly (key 13)

remove the body cap assembly (key 43).

2. Remove the disk assembly (key 13) from the disk spacer

(key 44) and replace if necessary.

3. To inspect the orice (key 5), remove the cap screws

(key 2) and separate the diaphragm case assembly

(key 4) from the body (key 1).

4. Remove and inspect the body seal O-ring (key 11) and

the backup ring (key 49). Replace if damaged.

5. Inspect and replace the orice (key 5) if necessary.

Lightly lubricate the threads of the replacement orice.

Install with 29 to 37 foot pounds (39 to 50 N•m)

of torque.

6. Install the backup ring (key 49) into the body

(key 1). Next place the body seal O-ring (key 11) into

the body. See Figure 8.

7. Replace the diaphragm casing (key 4) on the body

(key 1) and secure with the cap screws (key 2) using 7

to 9 foot pounds (9,50 to 12 N•m) of torque.

8. Secure the disk assembly (key 13) to the disk spacer

(key 44). Place the back disk spring (key 41) and a new

back body seal O-ring (key 42) on the back body cap

(key 43).

9. Lightly lubricate the threads when replacing the body

cap assembly.

Diaphragm and Spring Case Area

This procedure is for gaining access to the control spring,

diaphragm, and lever assembly stem. All pressure must

be released from the diaphragm case assembly before

performing the following steps. Key numbers are referenced

in Figure 8.

1 2 3 4 5 6 7 8 9 10 11 12

Types 66R and 66RR 1

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