Samson EB 01a, Mounting And Operating Instructions

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3-14
EB 01a_EN
March 2023 edition
Subject to technical changes
Design and principle of operation
To make it easy to push on the plug stem, a small notch is made
in the bellows to let air escape.
Ö
Push the plug (13) onto the bellows (15).
Ö
Secure the connection between the plug and bellows with a
PTFE cord (14) inserted as far as possible.
3.5.5.3 Assembling the bonnet fl ange
− When assembling the bonnet fl ange and all other parts in
contact with media, only use water-free grease (e.g. halocar-
bon grease).
Ö
Place the bonnet fl ange (2) on a clean surface at working
height so that the stem guide is easy to reach.
Ö
Insert the distance bushing and V-rings and lock ring of the
V-ring packing (33). For the arrangement of the packing
rings, see Figure 3-9.
Ö
Insert the set of spring washers (34) into the provided hole.
Arrangement of the spring washers, see Figure 3-9.
Ö
Insert the O-ring (30) into the inner groove of the stuf fi ng box
(27).
Ö
Press the upper bearing bushing (29) into the bottom part of
the stuf
fi ng box (27).
Ö
Grease the stuf fi ng box (27) on the thread.
Ö
Screw the stuf fi ng box (27) into the upper thread of the bon-
net fl ange (2), the outer groove of the stuf fi ng box is still visi-
ble.
Do not screw the stuf fi ng box (27) into the bonnet fl ange as far
as it will go.
Ö
Push the yoke (38) onto the bonnet fl ange and fasten with the
grooved nut (39).
Ö
Clamp the bonnet fl ange (2) at the yoke in a vice with the
fl ange opening facing upwards.
Damage to the bonnet fl ange due to improper handling!
Ö
Do not damage the bonnet fl ange, especially the thread on
the stem end.
Ö
Press the lower bearing bushing (41) into the recesses of the
guide bushing (31).
Ö
Insert the O-rings (35) and (42) into the corresponding re-
cesses in the guide bushing.
Ö
Grease the guide bushing (31) on the thread.
Ö
Screw the guide bushing (31) into the bonnet fl ange (2) as
far as it will go.
Info
Info
NOTE
Ö
Clean the PTFE lining of the body with detergent.
Ö
Lay the PTFE O-ring (3) into the groove of the body.
Depending on the temperature, it may be necessary to shrink the
O-ring with cold spray or by cooling it down in the refrigerator.
Ö
Insert seat (4) into the recess of the spacer (5) and fi x with PT-
FE cord (14).
Ö
Insert spacer (5) with seat (4) into the body.
Reduction in fl ow rate due to improper assembly!
Ö
Make sure that the passage opening in the spacer (5) aligns
with the inlet opening of the valve.
Ö
The upper edge of the spacer must be fl at with the sealing
surface of the housing fl ange.
Ö
With a 5 mm drill bit, drill diagonally approx. 10 mm deep
into the spacer (5) from the sealing surface.
Ö
Secure the spacer against twisting with a piece of PTFE cord
(14) inserted into this borehole.
Ö
Lay the PTFE washer (6) on the spacer (5).
Ö
Place the thrust washer (8) on the PTFE washer (6).
Ö
Insert the spring washers (9). For the position of the spring
washers, see Figure 3-9.
Ö
Carefully place the bottom fl ange (10) on the body.
Ö
Fit the washer (6), thrust washer (8) and spring washers (9)
centrally in the bottom
fl ange.
Ö
Tighten the screws (11) with the washer (43) in the valve
body. Tighten the screws evenly in a criss-cross pattern.
Damage to the valve due to incorrect tightening torques!
Ö
The permissible torques for assembly and for retightening the
connection of the bottom
fl ange can be found in Table 15-2
in Chapter “15.1.1 Tightening torques”.
3.5.5.2 Assembling the stem unit
− When assembling the stem, bellows, plug and all other parts
of the stem sealing in contact with media, only use water-free
grease (e.g. halocarbon grease).
Ö
The single-piece stem (16) is greased at the lower thread.
Ö
Screw the bellows (15) with a preassembled washer and
bushing onto the greased thread of the stem (16).
Due to the sliding property of the PTFE, we recommend using an
emery cloth to prevent the bellows from sliding when screwing it
onto the stem.
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NOTE
NOTE
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