Badger-meter Research Control Valve Manual do Utilizador descarregar pdf

Grafoil packing is available in preformed rings to fit standard

packing cavities for all Research Control Valves. For higher

temperature applications, Grafoil has the physical properties

to provide sealing at temperatures greater than the upper

limits of standard PTFE or Kalrez. If the application is quick

opening (on-off) and Grafoil packing is used, the standard

actuator will work with higher operating pressure. If the

application is to provide proportional control, a positioner

should be used to overcome additional drag or hysteresis.

Grafoil packing has a propensity to increase the friction on

the trim.

1. Grafoil can be installed in the bonnet over a dummy trim

as shown in Figure 1.

Figure 1:

2. Fill the cavity with the Grafoil rings, tamping into the

cavity with a packing tool or piece of appropriate size

copper tubing as shown in Figure 2, until cavity is full with

a couple threads showing.

Figure 2:

3. Screw gland in and tighten to compress packing. Remove

gland and blow or pick out any small pieces that may be

in the threads. See Figure 3.

Figure 3:

4. Replace gland nger tight and remove dummy stem

Figure 4 and replace with new innervalve and stem.

Tighten packing gland and test seal at nal assembly the

same as with chevron ring packing.

Figure 4:

Grafoil Packing Installation

Installation Manual

RCV-UM-01083-EN-01 (August 2014)

1 2

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Página 1 - Installation Manual

Grafoil packing is available in preformed rings to fit standard packing cavities for all Research Control Valves. For higher temperature applications,

Página 2 - Control. Manage. Optimize

www.badgermeter.comResearch Control is a registered trademarks of Badger Meter, Inc. Other trademarks appearing in this document are the property of

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