Jafar 2312 Operating Manual - Page 7

Browse online or download pdf Operating Manual for Control Unit Jafar 2312. Jafar 2312 8 pages. Flanged gate valves with soft seals

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

If the valve operation is difficult, i.e. the valve reaches the maximum driving torque before either of its limit

positions (e.g. due to scale on the spindle threads), repeat the full operation three times.



Check the tightness of all connections and seals with the gate valve closed.



If all the actions above have been completed with a good result, visually inspect the corrosion protection. If

the paint coat is damaged, rebuild it with the paint kits available from JAFAR.

Replacing the seal in the cover:

Fully open the valve (until you clearly sense that the wedge closure (7) resists further movement; this will seal the

spindle under the flange (6)).

This operation allows you to replace the o-rings in the plug (3) or the whole plug assembly on the pipeline in

operation.8

Clean the gate valve cover from dirt, sediments and grime.

Disassemble the following in the succession shown below:



the wiper gasket (1);



the circlip (2).



Release and remove the sealing plug (3) (with the service wrench tool available from the manufacturer).



Clean and moisten the seat in the cover.



Install the new sealing plug assembly (3) or clean the existing one and install its new o-rings.



Leak test the valve in the OPEN POSITION to confirm that the sealing has been properly replaced.



Install the circlip in place to prevent secure the plug (2) in place.



The reassembled and positively tested valve will be ready for operation.

OPERATING MANUAL

11-2020

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