Pfeiffer Chemie-Armaturenbau GmbH
Pfeiffer Chemie-Armaturenbau GmbH • Phone: +49 2152 2005-0 • Fax: +49 2152 1580 • E-Mail: [email protected] • Internet: www.pfeiffer-armaturen.com
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EB 26a_EN
For version without spring-loaded ball:
Press the seat ring ( 9a ) into the main body.
Only for versions with spring-loaded ball:
Insert the encapsulated disk springs ( 13 ) into the main body
( 1 ). Refer to Fig. 5 for the arrangement of the disk springs.
Press the seat ring ( 9a ) until it touches the disk springs.
Assembly for all versions:
Push the bearing bushing ( 7 ), while slightly turning it, onto
the shaft ( 5 ). Apply a small amount of lubricant to the shaft
( 5 ). Insert shaft together with the bearing bushing ( 7 )
through the shaft bore from the inside into the main body ( 1 ).
Note:
Take care not to damage the sealing surface of the
shaft ( 5 ).
Make sure the bearing bushing ( 7 ) is positioned,
together with the shaft ( 5 ) in the groove of the main
body ( 1 ) without being jammed.
Turn the shaft ( 5 ) until the fl attened part is at right angle to
the worktop. Lightly spray the ball ( 4 ) with silicone and care-
fully insert it.
Insert the PTFE ring ( 10 ) and carbon/graphite ring ( 10a )
into the corresponding grooves of the main body ( 1 ).
4.3.2 Assembling the side body
Insert the seat ring ( 9b ) into the side body ( 2 ). Place the
side body ( 2 ) together with the ready-mounted seat ring
( 9b ) on the main body ( 1 ) and carefully push them together.
4.3.3 Final assembly of the ball valve
Turn the side body ( 2 ) until the boreholes of the two body
halves ( 1 and 2 ) are aligned with one another.
Tighten the slightly greased screws ( 14 ) evenly in a criss-
cross pattern to fasten the bodies together.
Note:
Refer to Table 3 in Section 4.4 for the tightening
torques for each nominal size.
Slide the parts of the V-ring packing ( 12 ), turning them
slightly, over the mounted shaft ( 5 ) and insert them into the
packing seat of the main body ( 1 ).
Refer to Fig. 5 for the arrangement of the V-rings.
4.2.3 Final assembly of the ball valve
Turn the side body ( 2 ) until the bolting holes of the two body
halves ( 1 and 2 ) are aligned with one another.
Tighten the slightly greased screws ( 14 ) evenly in a criss-
cross pattern to fasten the bodies together.
Note:
Refer to Table 3 in Section 4.4 for the tightening
torques for each nominal size.
Slide the parts of the V-ring packing ( 12 ), turning them
slightly, over the mounted shaft ( 5 ) and insert them into the
packing seat of the main body ( 1 ). Refer to Fig. 4 for the ar-
rangement of the V-rings.
Stack the spring washers ( 11 ) on the packing. Refer to Fig. 4
for the arrangement of the spring washers.
Press the carbon/graphite ring ( 16 ) into the bushing ( 17 ).
Push the bushing ( 17 ) together with the carbon/graphite ring
( 16 ) over the shaft ( 5 ) until they rest on the spring washers.
Slide the carbon/graphite ring ( 8 ) carefully over the shaft
until it touches the bushing ( 17 ).
Place the packing fl ange ( 6 ) over the shaft onto the body.
Use the greased cap screws ( 15 ) to align the packing and
tighten the screws evenly in a criss-cross pattern.
Note:
Before performing a leak test, open and close the
valve several times. This allows the ball to centre
itself on the seat rings and provides optimal shut-off
performance.
Assembly of the ball valve is now completed.
4.3 Assembly of the standard ball valve
4.3.1 Assembling the main body
The assembly begins with the main body ( 1 ).
Place the main body with the fl ange facing downwards on a
fl at, clean working surface to allow you to easily access the
inside of the valve.
