Burkert Type 2002 - Manual (Page 20)

20
Assembly
8.3.2. installing the actuator (welded body)
Graphite seal
Fig. 20: Graphite seal
→
Check graphite seal and, if required, replace. Remove all
residues when replacing seal.
Warning!
danger if incorrect lubricants used!
Unsuitable lubricant may contaminate the medium. In oxygen
applications there is a risk of an explosion!
• In specific applications, e.g. oxygen or analysis applications, use
appropriately authorized lubricants only.
→
Grease nipple thread before re-installing the actuator
(e.g. with Klüber paste UH1 96-402 from Klüber).
note!
damage to the seal on the swivel plate!
• When installing the actuator, ensure that the valve is in the open
position.
→
Control function A and I:
Pressurize lower control air connection with compressed air
(5 bar) so that the swivel plate is lifted off the valve seat and is
not damaged when screwed in.
→
Screw actuator into the valve body.
tightening torques:
Orifice
(dn)
tightening torque
(nm)
15 45 ± 3
20 50 ± 3
25 60 ± 3
32 65 ± 3
40 65 ± 3
50 70 ± 3
65 70 ± 3
Tab. 10: Tightening torques
If the body is stainless steel, grease the nipple thread with
e.g. Klüber paste UH1 96-402.
english
Type 2000/2002