Emerson Keystone Figure 969 Hopper Bedienungsanleitung

KEYSTONE FIGURE 969 HOPPER KNIFE GATE VALVES

InstallatIon and operatIng manual

Gland packing replacement instructions for F969 hopper valves

PACKING REPLACEMENT

For optimum performance, the packing

material should be replaced whenever the

valve has been disassembled for routine

maintenance. This is a very simple procedure,

which can be done leaving the valve in the

pipeline. Correct packing is essential for

leak-free operation.

Use Emerson’s preformed and pre-cut

Packing Replacement Kits for best results.

Ensurepacking material selected is suitable

forthe service.

REPACKING PROCEDURE

NOTE

Care should be taken to stagger the mitred joints in

each layer of packing to the opposite side of the gland

follower, e.g:

• 1st packing layer joint to the front of the valve.

• 2nd packing layer joint to the rear of the valve.

• 3rd packing layer joint to the front of the valve.

1. Press first layer of gland packing (6) into

gland cavity by hand, then repeat the

process with the gland packing ensuring

the joints of the two layers are on opposing

sides of the cavity.

2. Firmly press the packing (6) around gate

and into gland cavity.

Strip-down procedure:

1. Ensure pipeline is not pressurized and

anyhazardous medium is drained away.

2. Close valve, remove clevis pins/bolts.

3. Use actuator or handwheel to raise spindle

clear of gate.

4. Remove all upstand bolts.

5. Remove actuator sub-assembly

(handwheel,upstand, gearbox and spindle

or cylinder actuator).

NOTE

Heavy valves will require a chain block or crane.

6. Remove gland follower nuts (8) and

washers(7), then remove gland follower (3)

from gate(2).

7. Remove packing (6) from gland cavity.

8. Clean gland cavity.

9. Fit the gland follower over the gate (2).

10. If the gate has excessive irregularities or

abrasion and requires replacement, then

this will necessitate removal of the valve

from the pipeline, to prevent damage to

thevalve seats.

Gate (2)

Packing (6)

Packing join

12, 13

7, 8 14

12, 13

7, 8 14

KEYSTONE FIGURE 969 HOPPER KNIFE GATE VALVES

InstallatIon and operatIng manual

CAUTION

Do NOT over tighten gland packing as it will cause

excessive resistance to gate movement.

NOTE

To minimize risk to personnel, Emerson recommend

the use of purpose built guards and shrouds.

Refer to the Emerson data sheet or consult factory

for details.

REASSEMBLY

1. Replace gland follower (3) onto the gate (2)

and push down until firmly on valve.

2. Coat stud (9) threads with anti-seize

compound. Replace the gland follower

washers (7) and gland follower nuts (8) onto

each stud (9), screw them down equally,

donot over tighten.

3. Refit the upstand (10) and handwheel.

Replace both upstand bolts (12) and upstand

washers.

4. Use actuator (handwheel or pneumatic

actuator) to lower spindle to align clevis

andgate.

5. Fit clevis bolts (14).

6. Assembly is complete, actuate the valve to

check that the gate is seating properly in

theclosed position.

7. When commissioning, gland follower nuts

(8) may require tightening for final gland

packing adjustment.

Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product.

Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Keystone is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson

and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.

The contents of this publication arepresented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be

construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by

our terms and conditions, which are available uponrequest. We reserve the right to modify or improve the designs or specifications of such products at any time without

notice.

Emerson.com/FinalControl

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