Jafar 4493 Посібник з експлуатації - Сторінка 8

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4. STORAGE AND TRANSPORT

The products are packed on EURO pallets (1200x800) or in dedicated packaging. The valves should be stored in

clean rooms, free from bacteriological and chemical contamination, at temperatures from -20°C to 70°C. The paint

coating and rubber elements must be protected against long-term exposure to UV radiation. The stored valves are

protected against mechanical damage.

Do not compress any rubber parts. The valve flap should be left in an intermediate position - so that the flap does

not exceed the installation length of the valve (this position is shown in Figs. 6 and 7). Secure the products against

shifting during shipping and handling. Heavy valves (DN500 and larger) shall be handled with dedicated eye bolts;

valve sizes from DN200 to DN400 shall be handled on slings and secured from rotating. Do not handle by the

lever, the gearbox handwheel, or the operator/gearbox housing.

Table 3 below lists the transport holes on the flange projections for the range DN500 - DN900 - Fig. 3. For DN1000

and DN1200, the transport holes are located on the cylindrical surface of the body (between the connection flanges

to the pipeline) - Fig. 4.

DN500

428

PN10

434

PN16

Table 3. Sizes of transport holes

Fig. 6. Butterfly valve part no. 4493SA DN800

5. INSTALLATION

5.1.

GENERAL REQUIREMENTS

Flanged butterfly valves: TYPE 4493, TYPE 4493SQ and TYPE 4493SA can be installed in underground or

overground pipelines on horizontal or vertical installations. The listed products are suitable for joining with the

flanged ends of pipelines with the size equal to that of the valve flanges. The valves are bi-directional tight. The

valves are to be installed in the pipeline so that the flow direction of the medium is in accordance with the flow

direction indicated on the body. This is due to the increased service life of the sealing elements and the reliability

of operation in such a configuration. At the moment of valve opening the stream coming out through the slit in the

lower part of the body has the maximum speed, which consequently results in tearing off the embedded

contamination (this applies to the situation when solid contaminants get with the medium and they settle at the

bottom of the pipeline and in the body of the butterfly valve). It is possible to mount the valve in the opposite

direction to the arrow on the body, bearing in mind the increased wear and tear of the sealing elements compared

to the standard configuration described above.

OPERATING MANUAL

DN600

DN700

431

437

07-2022

DN800

DN900

434

441

Fig.7. Butterfly valve part no. 4493 DN1200

DN1000

DN1200

4xM27

4xM36

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