Flowserve Valtek Valdisk Control Valves Instrukcja Użytkownika Pobierz pdf (Strona 6)

10-6

10. All seat conﬁgurations with screw/clip retainers require

a gasket (item #55) installed in the appropriate groove.

This is accomplished by pressing the gasket into the ap-

propriate groove.

11. If the seat retainer is the screw/clip type and has a soft or

dual seat, press the soft seat into the soft seat retainer or

metal seat. (There should be an interference between the

soft seat and the retainer.) With the valve in the closed

position, secure the retainer or metal seat in place by

tightening the retainer clips and screws. This allows the

seat to align with the disc, permitting tight shutoff.

12. If the seat retainer is the screw/clip type with a metal seat

design, a gasket will need to be installed in the metal seat

prior to clipping the seat in place with the seat clips and

screws.

NOTE: Valdisk valves of earlier design may require that

the disc be open while installing the soft seat into the

body. (Refer to Figure 1D.)

13. If an early design Valdisk seat retainer has an indexing

groove to accept a soft seat, press the corresponding seat

into the retainer groove. Install the seat retainer subas-

sembly into the body.

14. On valves supplied with the retainer snap-ring conﬁgu-

ration, install the snap-ring into the groove around the

retainer (or metal seat). Start the retainer into the body

with the open ends of the snap-ring in the body groove.

Figure 4: Transfer Case Mounting

Style A

Fail-closed

Air-to-open

Shaft Upstream

Style B

Fail-open

Air-to-close

Shaft Upstream

Style C

Fail-open

Air-to-close

Shaft Downstream

Style D

Fail-closed

Air-to-open

Shaft Downstream

NOTE: Styles B and D may

require a heavy-duty spring

to achieve failure.

Right-hand Mounting

Facing Downstream

Left-hand Mounting

Facing Downstream

Style C

Style D Style B Style A

Left-hand

Mounting

Right-hand

Mounting

NOTE: Orientation 1 is standard. Orientation positions

2 and 4 are not available in some actuator sizes.

Contact factory.

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Flowserve Valtek Valdisk Control Valves Instrukcja Użytkownika Strona 6

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