Emerson Fisher RSS Manual de Instruções descarregar pdf (Página 9)

Instruction Manual

D101299X012

RSS Valve

September 2014

the valve and bonnet with a feeler gauge (figure 5). At all bolting locations, the gap must be equal and

approximately 2.0 mm (0.080 inches) for NPS 1 through 4 valves. In order to keep the gap equal, the individual

bolts m ay have to be tightened to different torque levels.

Note

Due to the cold flowing tendency of t he valve liner, this procedure should be repeated upon installation and after the first thermal

cycle of the valve.

11. Install the packing rings, packing box ring, and packing follower (keys 13, 12, and 11) over the valve stem. Tighten

the packing follower to 1.13 NSm(10lbfSin)oftorquetoensurethepackingrings are seated. After the packing

rings are seated, l oosen the packing follower one half turn.

12. Manually press the valve stem (key 5) into the valve until the valve plug contacts the seat ring.

CAUTION

Improper adjustment in step 13 might cause damage to trim parts. Perform this step carefully.

13. Thread the travel stop (key 16) onto the valve stem until there is a 0.5 mm (0.020 inch) gap between the bottom

surface of the travel stop legs and the top of the bonnet (figure 5).

14. Thread the locknut (key 10) onto the stem and tighten it against the travel stop.

15. Mount the actuator and secure it with the yoke locknut (key 14). Connect the actuator stem and valve stem

according to the procedure in the appropriate actuator instruction manual.

Figure 6. Typical Locking Rope Installation

WITH LOCKING ROPE PARTIALLY REMOVED WITH LOCKING ROPE INSTALLED

W9165-1

W9166-1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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Emerson Fisher RSS Manual de Instruções Página 9